2026-10-16T21:10:22Z https://aiep.pensoft.net/oai.php

10.3750/AIP1970.01.1.01 1970-12-31 aiep

author Winnicki, A. author Stańkowska-Radziun, M. author Radziun, K. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 7 20 1970 10.3750/AIP1970.01.1.01 https://aiep.pensoft.net/article/24711/ https://aiep.pensoft.net/article/24711/download/pdf/ Structural and mechanical properties of the egg membranes of Salmo gairdneri Rich. in the period of hatching were investigated. Only local action of hatching enzyme upon the egg membrane and local decrease of its strength was observed. In the places, which were not under the action of the enzyme, egg shell keeps its structure unchanged as well as its great strength. The differences in the thickness of egg shells of the same female and even of the same egg were observed. No correlation between the thickness of the egg shell and its strength was found. text/html en_US Pensoft Publishers Structural and mechanical changes in the egg membranes of Salmo gairdneri Rich. during the period of hatching of the larvae Research Article

10.3750/AIP1970.01.1.02 1970-12-31 aiep

author Winnicki, A. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 21 27 1970 10.3750/AIP1970.01.1.02 https://aiep.pensoft.net/article/24712/ https://aiep.pensoft.net/article/24712/download/pdf/ The egg shell is equally elastic throughout the embryonic development and all its properties remain unchanged until the hatching of larvae. In exceptional conditions as a result of mechanical pressure on an egg, the egg covering increases its measurements up to four times. text/html en_US Pensoft Publishers Elasticity of egg shells of salmonid fishes Research Article

10.3750/AIP1970.01.1.03 1970-12-31 aiep

author Węgrzynowicz, R. author Zbanyszek, R. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 29 32 1970 10.3750/AIP1970.01.1.03 https://aiep.pensoft.net/article/24714/ https://aiep.pensoft.net/article/24714/download/pdf/ Investigations upon the lability of frequency and strength of heart systoles in Salmo trutta (L.) influenced by water temperature changes were carried out. There was showed the considerable lability of heart work when artificially decreasing and then increasing water temperature. text/html en_US Pensoft Publishers Water temperature effects on cardiographic changes in Salmo trutta (L.) Research Article

10.3750/AIP1970.01.1.04 1970-12-31 aiep

author Węgrzynowicz, R. author Zbanyszek, R. author Muzykiewicz, J. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 33 36 1970 10.3750/AIP1970.01.1.04 https://aiep.pensoft.net/article/24715/ https://aiep.pensoft.net/article/24715/download/pdf/ Heart conditioned responses in Salmo trutta (L.) in the field of inductive current were investigated by means of the cardiographic method. High excitability grade was proved. Heart responses appeared after the use of subthreshold stimuli for smooth muscles. text/html en_US Pensoft Publishers Heart conditioned response in Salmo trutta (L.) In the field of inductive current Research Article

10.3750/AIP1970.01.1.05 1970-12-31 aiep

author Węgrzynowicz, R. author Zbanyszek, R. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 37 41 1970 10.3750/AIP1970.01.1.05 https://aiep.pensoft.net/article/24717/ https://aiep.pensoft.net/article/24717/download/pdf/ There was worked out the method or studying heart functional changes in fish in aquarium experiments. In consequence of the operation a rubber balloon was placed in immediate heart neighbourhood and in connection with Marey&prime text/html en_US Pensoft Publishers Method of cardiography in fishes under aquarium conditions Research Article

10.3750/AIP1970.01.1.06 1970-12-31 aiep

author Chełkowski, Z. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 43 57 1970 10.3750/AIP1970.01.1.06 https://aiep.pensoft.net/article/24718/ https://aiep.pensoft.net/article/24718/download/pdf/ The work deals with 32 meristic features of salmon trout from the following rivers of Pomerania: Rega, Parsęta, Uniesta, Wieprza with Grabowa and Słupia. Adult individuals of salmon trout, fished out from the rivers during their spawning migration, were used as the material. The oscillation limits for values of particular meristic features were similar for males and females, as well amongst one population, as between different population of fishes . Meristic features for salmon trout were, thus, given as the result of total study, without taking into consideration sex of fishes or population to which they belonged. text/html en_US Pensoft Publishers Description of meristic features of salmon trout (Salmo trutta trutta L.) from the rivers of Pomerania district Research Article

10.3750/AIP1970.01.1.07 1970-12-31 aiep

author Ejsymont, L. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 59 65 1970 10.3750/AIP1970.01.1.07 https://aiep.pensoft.net/article/24721/ https://aiep.pensoft.net/article/24721/download/pdf/ This paper describes a rare specimen of deep-sea angler-fish, Linophryne lucifer, collected from a depth of about 400 metres on the NW Flemish Capfishing-ground of the NW Atlantic. December 10, 1965; 255 (209+46) mm. in total length, 1.00 kg, in weight. text/html en_US Pensoft Publishers Record of the ceratioid fish, Linophryne lucifer in the NW Atlantic Research Article

10.3750/AIP1970.01.1.08 1970-12-31 aiep

author Cięglewicz, W. author Hoppe, G. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 67 72 1970 10.3750/AIP1970.01.1.08 https://aiep.pensoft.net/article/24722/ https://aiep.pensoft.net/article/24722/download/pdf/ The comparison of the annual length increase of 1955 and 1960 year-classes of the flounder with the water temperature in Gdańsk Bay during consecutive years of their life indicates very close relation between the rate of growth of the flounder and the water temperature. text/html en_US Pensoft Publishers The relation between the water temperature and the rate of growth of flounder Platichthys flesus (L.) in Gdańsk Bay Research Article

10.3750/AIP1970.01.1.09 1970-12-31 aiep

author Piątek, M. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 73 96 1970 10.3750/AIP1970.01.1.09 https://aiep.pensoft.net/article/24723/ https://aiep.pensoft.net/article/24723/download/pdf/ The author had studied the age and rate of growth, the weight increase and the chemical compositions of eels living under the most typical conditions, such as: sea, littoral waters and inland lakes. The investigated material comprised 646 specimen of fish; out of this 499 represented the yellow eel (282 migrating from sea and river estuaries, 151 from Firth of Vistula River and 66 from inland lakes) and 96 represented the silver eels migrating to sea for spawning. 258 pieces were examined technologically and 158 were subjected to chemical analysis for content of proteins, fats, water and mineral compounds. The highest content of fat was found at the silver eels; lower content was noted at eels living in bays and still lower content, at eels living in lakes. The lowest rate of fat increase was observed at eels from inland lakes. Author concludes, that the content of fat in meat tissue is one of the characteristic conditions for silver eel, which stimulates it for spawning migrations. The existing literature in eel comprises strictly limited part of the problems such as, biological or technochemical, but does not comprise the problems in any complex form. Up to now, in Poland no detailed investigations have been carried out on the subject of eel. Aim of the present work was to determine the growth, changes in weight proportions and in chemical compositions of the eels living in Polish waters, with due consideration to the most typical conditions in economical aspect, such as: Baltic Sea-migrating and feeding (yellow eel) and silver eel. Mazurian Lakes-feeding eel (yellow). Firth of Vistula River-feeding eel. (yellow). The results of technochemical analysis permitted to define the usable and consumptive values of the fish. text/html en_US Pensoft Publishers Age, growth and changes of weight proportions and of chemical composition of eel during its life in Polish waters Research Article

10.3750/AIP1970.01.1.10 1970-12-31 aiep

author Brucko-Stempkowski, R. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 97 102 1970 10.3750/AIP1970.01.1.10 https://aiep.pensoft.net/article/24725/ https://aiep.pensoft.net/article/24725/download/pdf/ A number of 116 specimens of Platichthys flesus (L.), of the total body length 14.5-28.5 cm, was examined for parasites. The fishes were caught during the spring of 1968 in Szczecin Lagoon in the vicinity of Kamień Pomorski. Thirteen species of parasites were found, including 4 species of digenetic trematodes, 1 species of cestode, 3 species of nematodes and 5 species of acanthocephalans. A total number of 75 fishes, i.e., 65.64%, was infested. There were found 4 species of parasites of marine origin. text/html en_US Pensoft Publishers Parasites of the flounder - Platichthys flesus (L.) from the brackish water of Kamieński Bay Research Article

10.3750/AIP1970.01.1.11 1970-12-31 aiep

author Rynkiewicz, J. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 103 106 1970 10.3750/AIP1970.01.1.11 https://aiep.pensoft.net/article/24726/ https://aiep.pensoft.net/article/24726/download/pdf/ From 1966 to 1967 the author carried out an investigation on the helminth fauna of gar-fish Belone belone (L.) from Puck Bay of the Baltic. It was established, the next species parasitise in gar-fish: Diplostomum spathaceum (Rud.), Tylodelphys sp., Scolex pleuronectis Mull., Contracaecum aduncum (Rud.), Cucullanus truttae (Fabricius), Pomphorhynchus laevis (Zoega), and Neoechinorhynchus rutili (Mull.). With exception of Pomphorhynchus laevis (Zoega) they were not found in gar-fish yet, but they occur commonly in the other Polish fishes. text/html en_US Pensoft Publishers The parasite fauna of gar-fish - Belone belone (L.) from Puck Bay Research Article

10.3750/AIP1970.01.1.12 1970-12-31 aiep

author Zaleski, S. author Łojkiewicz, Ł. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 107 116 1970 10.3750/AIP1970.01.1.12 https://aiep.pensoft.net/article/24727/ https://aiep.pensoft.net/article/24727/download/pdf/ Various quantitative and qualitative conditions of microflora in content of alimentary canal lengths were noted at cod, herring and sprat. The changes depended on season of a year. No bacteria was noted in stomach and middle intestine of cod during spawning season. text/html en_US Pensoft Publishers Studies on the quantitative and qualitative composition of microflora in alimentary canals at the various fishes of Gdańsk Bay Research Article

10.3750/AIP1970.01.1.13 1970-12-31 aiep

author Zaleski, S. author Garcia-Tello, P. author Rozmysł, R. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 117 126 1970 10.3750/AIP1970.01.1.13 https://aiep.pensoft.net/article/24728/ https://aiep.pensoft.net/article/24728/download/pdf/ Investigated, was an interdependence of the water microbes and their activity on Salmonella group. n some cases, the stimulating and bacteriostatic effects were noted. No interactivity had been noted in many cases. text/html en_US Pensoft Publishers Studies on the interdependence of the selected psychrophylic bacteria strains and their activity on Salmonella and Escherichia groups Research Article

10.3750/AIP1970.01.1.14 1970-12-31 aiep

author Zaleski, S. author Jara, S. author Sobolewska-Ceronik, K. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 127 135 1970 10.3750/AIP1970.01.1.14 https://aiep.pensoft.net/article/24730/ https://aiep.pensoft.net/article/24730/download/pdf/ Subject of the investigations was a quantitative and qualitative composition of microflora in slime of a Baltic cod-fish directly after catching and during its storing in a sterile ice. During the 12-day storing, the quantitative and qualitative changes in the bacterial composition were noted. The total quantity of bacteria and the percentage participation of the rods of Pseudomonas-Achromobacter group increased during the investigations. text/html en_US Pensoft Publishers Quantitative and qualitative changes of microflora in a skin slime of cod-fish stored in a sterile ice Research Article

10.3750/AIP1970.01.1.15 1970-12-31 aiep

author Zaleski, S. author Ceronik, E. author Sobolewska-Ceronik, K. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 137 144 1970 10.3750/AIP1970.01.1.15 https://aiep.pensoft.net/article/24732/ https://aiep.pensoft.net/article/24732/download/pdf/ Subject of the studies, was a thermal resistance of the spores Bacillus subtilis suspended in the meat extracts of a sea and fresh-water fish. Depending on the spore suspending environment, the thermal resistance proved to be different. text/html en_US Pensoft Publishers Thermal resistance of Bacillus subtilis spores studied in the meat extracts of the various sea and fresh-water fishes Research Article

10.3750/AIP1970.01.1.16 1970-12-31 aiep

author Dąbrowski, T. author Kołakowski, E. author Kołakowska, A. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 145 158 1970 10.3750/AIP1970.01.1.16 https://aiep.pensoft.net/article/24733/ https://aiep.pensoft.net/article/24733/download/pdf/ The chemical composition of edible cuttlefish flesh, distinguishing it into the mantle and arms together with part of head was examined. Comparison between the chemical composition of cuttlefish flesh and that of squid, originating from the same fishing ground and catching period was carried out also. text/html en_US Pensoft Publishers Studies on chemical composition of cuttlefish (Sepia sp.) meat as related to its nutritive value Research Article

10.3750/AIP1970.01.1.17 1970-12-31 aiep

author Niegolewski, A. author Daniszewski, A. author Piaszczyński, W. 1970-12-31 1970-12-31 1970 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 1 1 159 174 1970 10.3750/AIP1970.01.1.17 https://aiep.pensoft.net/article/24734/ https://aiep.pensoft.net/article/24734/download/pdf/ Effective investments, or their influence on growth of production, can not be considered in qualitative or quantitative aspects only. The intersubstitution of the particular factors, as constituents of a production function determines the basis for the proper allocation of fun. text/html en_US Pensoft Publishers Growth of production in fisheries in relation to investments on land, investments in vessels and to labour Research Article

10.3750/AIP1972.02.1.01 1972-06-30 aiep

author Le-Trong, Phań author Kompowski, A. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 3 18 1972 10.3750/AIP1972.02.1.01 https://aiep.pensoft.net/article/24735/ https://aiep.pensoft.net/article/24735/download/pdf/ Subject of this work, are the studies on morphological characters, length, age and rate of growth, age composition, reproduction and feeding of Pagellus acarne (Risso). It had been ascertained that, in regions investigated (Cap Blanc and Rio de Oro), this species forms at least two separate local stocks which among other features, differ in morphological characters and in rate of growth, in condition and in period of sex changing (hermaphroditism). text/html en_US Pensoft Publishers The bronze bream - Pagellus acarne (Risso) from north-west African region Research Article

10.3750/AIP1972.02.1.02 1972-06-30 aiep

author Le-Trong, Phań author Kompowski, A. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 19 30 1972 10.3750/AIP1972.02.1.02 https://aiep.pensoft.net/article/24736/ https://aiep.pensoft.net/article/24736/download/pdf/ This work presents investigations of morphological characters, age composition, rate of growth, reproduction and food of Pagellus coupei Dieuzeide. It had been ascertained that, in North-West African region, this species forms at least three stocks, i.e. in Rio de Oro, Dakar and Tacoradi region. Worked out is the key to species of Pagellus for region discussed. text/html en_US Pensoft Publishers A study on Pagellus coupei Dieuzeide from the north-west African region Research Article

10.3750/AIP1972.02.1.03 1972-06-30 aiep

author Krzykawski, S. author Romański, J. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 31 61 1972 10.3750/AIP1972.02.1.03 https://aiep.pensoft.net/article/24737/ https://aiep.pensoft.net/article/24737/download/pdf/ The work comprises characteristics of whiting catches in years 1959-1967 and the results of studies on length and age composition, and on growth rate of body length and weight of this species. text/html en_US Pensoft Publishers Studies on whiting Odontogadus merlangus (L.) from North Sea in years 1959-1967 Research Article

10.3750/AIP1972.02.1.04 1972-06-30 aiep

author Sagan, Z. author Felińska, C. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 63 68 1972 10.3750/AIP1972.02.1.04 https://aiep.pensoft.net/article/24738/ https://aiep.pensoft.net/article/24738/download/pdf/ Presented are the initial results of studies on appearance of blood group characteristics at European eels. No presence of iso-agglutinin was noted. It ascertained that the erythrocytes of certain eels show special agglutination, by respective human serum and lactines. text/html en_US Pensoft Publishers Preliminary studies on blood groups of eels Anguilla anguilla (L.) Research Article

10.3750/AIP1972.02.1.05 1972-06-30 aiep

author Grabda, E. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 69 76 1972 10.3750/AIP1972.02.1.05 https://aiep.pensoft.net/article/24739/ https://aiep.pensoft.net/article/24739/download/pdf/ Une anguille atteinte de septicemie hemorragique (septicaemia haemorrhagica anguillorum) presentait une degeneration adipeuse (degeneratio adiposa) du tissu hepatique. Le parenchyme montrait de fortes hyperemies et des extravasations intratissulaires provoquant des foyers necrosiques. text/html en_US Pensoft Publishers Degeneration adipeuse du foie chez l′anguille anguille Anguilla anguilla (L.) Research Article

10.3750/AIP1972.02.1.06 1972-06-30 aiep

author Szerzysław, Sroczyński 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 77 90 1972 10.3750/AIP1972.02.1.06 https://aiep.pensoft.net/article/24740/ https://aiep.pensoft.net/article/24740/download/pdf/ [Automated translation of the Polish Summary—No original English Abstract available.] During the experiments on pike with a body length of 20 to 70 cm, the smallest focus distances for the anterior segment of the field of view, the angle of the binocular field of view in the plane of the pigmented cavities in the skin of the upper jaw symmetrically located on both sides, and the parallax obtained from the intersection of the plane of the pigmented cavities were measured in the skin of the upper jaw with a line parallel to the axis of the body passing through the end of the mouth. The distance to the closest sharp point of view was found to be proportional to the body length of pike. The linear widths of the binocular field of view at the shortest sharp vision distance do not exceed the length of the victim so that the last one fits freely within the binocular field of view at the time of attack. The parallax for the shortest sharp vision distance is approximately equal to the maximum opening of a pike's mouth. text/html en_US Pensoft Publishers Elements of visual perception system at pike Esox lucius L Research Article

10.3750/AIP1972.02.1.07 1972-06-30 aiep

author Węgrzynowicz, R. author Kłyszejko, B. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 91 94 1972 10.3750/AIP1972.02.1.07 https://aiep.pensoft.net/article/24741/ https://aiep.pensoft.net/article/24741/download/pdf/ A method was elaborated for application of physical effort to fish and for calculation of fish performance ability in physical units (kGm). text/html en_US Pensoft Publishers Method for application of physical effort to fish Research Article

10.3750/AIP1972.02.1.08 1972-06-30 aiep

author Węgrzynowicz, R. author Marczuk, K. author Kłyszejko, B. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 95 100 1972 10.3750/AIP1972.02.1.08 https://aiep.pensoft.net/article/24743/ https://aiep.pensoft.net/article/24743/download/pdf/ Studies on erythrocytes fragility of bream Abramis brama (L.) originating from Zalew Szczeciński proved that maximal hemolysis takes place in solution of 0.25% NaCl and minimal in 0.55%. The curves of erythrocytes osmotic resistance are of sigmoidal profile. Visual density in any concentrations lower then 0.25% NaCl corresponds to decreasing osmotic fragility proportionally to progress of dilutions. text/html en_US Pensoft Publishers Osmotic fragility of erythrocytes of bream Abramis brama (L.) from Zalew Szczeciński Research Article

10.3750/AIP1972.02.1.09 1972-06-30 aiep

author Węgrzynowicz, R. author Radziun, R. author Połujanowski, P. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 101 108 1972 10.3750/AIP1972.02.1.09 https://aiep.pensoft.net/article/24744/ https://aiep.pensoft.net/article/24744/download/pdf/ Body tension of bream Abramis brama (L.) in homogenous electric field of DC current in relation to direction of current flow and to fish length had been investigated under aquarium conditions. It ascertained that, threshold tension values in body depend on initial position of fish in relation to force lines of electric field and an increase of value in body tension under particular reactions is proportional to length of fish. text/html en_US Pensoft Publishers Tension changes in body of bream Abramis brama (L.) in homogenous electric field in relation to flow direction of direct current and to total length of fish Research Article

10.3750/AIP1972.02.1.10 1972-06-30 aiep

author Węgrzynowicz, R. author Zbanyszek, R. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 109 114 1972 10.3750/AIP1972.02.1.10 https://aiep.pensoft.net/article/24746/ https://aiep.pensoft.net/article/24746/download/pdf/ Studies on oxygen metabolism dynamics of liver and kidney of bream Abramis brama (L.) from Zalew Szczeciński prove that adaptation period of bream transferred into aquarium conditions is characteristic for increased respiration of liver and kidney during first days of adaptation. A tendency for respiratory metabolism in liver is noted to stabilize from 6th day and in kidney from 7th day of adaptation to aquarium conditions. text/html en_US Pensoft Publishers Changes of tissular respiration of bream Abramis brama (L.) adapted to aquarium conditions Research Article

10.3750/AIP1972.02.1.11 1972-06-30 aiep

author Grabda, J. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 115 125 1972 10.3750/AIP1972.02.1.11 https://aiep.pensoft.net/article/24747/ https://aiep.pensoft.net/article/24747/download/pdf/ An appearance of Lernaeolophus sultanus (Milne Edwards, 1840) was noted in buccal cavity of Pneumatophorus colias (Gmelin, 1788), originating from Las Palmas (Canary Isl.). Subject of this paper is a penetration of the parasites into eye-socket and nasal cavity and the anatomo-pathological changes associated with an invasion of the parasites. text/html en_US Pensoft Publishers Observations on penetration of Lernaeolophus sultanus (Milne Edwards, 1840) (Lernaeoceridae) in organs of Pneumatophorus colias (Gmelin, 1788) Research Article

10.3750/AIP1972.02.1.12 1972-06-30 aiep

author Chodyniecki, A. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 127 140 1972 10.3750/AIP1972.02.1.12 https://aiep.pensoft.net/article/24748/ https://aiep.pensoft.net/article/24748/download/pdf/ An interactivity of strains of water bacteria among Pseudomonas, Aeromonas, Vibrio and Flavobacterium genus had been investigated. Proved, stimulating and antagonistic activity of the defined strains, and determined the degree of biological activity in relation to certain physical factors. text/html en_US Pensoft Publishers Studies on biological activity of selected strains of water bacteria of genus Pseudomonas, Aeromonas, Vibrio and Flavobacterium Research Article

10.3750/AIP1972.02.1.13 1972-06-30 aiep

author Kawka, T. 1972-06-30 1972-06-30 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 1 141 150 1972 10.3750/AIP1972.02.1.13 https://aiep.pensoft.net/article/24750/ https://aiep.pensoft.net/article/24750/download/pdf/ Presented, are the results of analysis relating to geometry of circular cutter and its influence on specific cutting force. Based on these analysis, are practical conclusions drawn for selection of circular cutters to be applied in mechanical cutting of fish. text/html en_US Pensoft Publishers Geometry of circular cutter and its influence on specific cutting force of fish raw material Research Article

10.3750/AIP1972.02.2.01 1972-12-31 aiep

author Cykowska, C. author Winniciki, A. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 3 13 1972 10.3750/AIP1972.02.2.01 https://aiep.pensoft.net/article/24751/ https://aiep.pensoft.net/article/24751/download/pdf/ The present study of the effect of different hydrogen-ion concentrations (pH 5.5-8.3) on the embryonic development of the sea-trout Salmo trutta L. from the Baltic Sea has shown that incubation of eggs in buffers, irrespective of the pH of these solutions and the time when the eggs were transferred to them, is lethiferous to the embryos. The death of the embryos is preceded by the disturbance of the organogenetic process, the derangement of the physiological functions of the organism, and the inhibition of the growth rate. text/html en_US Pensoft Publishers Embryonic development of the Baltic sea-trout Salmo trutta L. in buffer solutions Research Article

10.3750/AIP1972.02.2.02 1972-12-31 aiep

author Felińska, C. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 15 19 1972 10.3750/AIP1972.02.2.02 https://aiep.pensoft.net/article/24752/ https://aiep.pensoft.net/article/24752/download/pdf/ The lipids, total and non-esterified cholesterol, total protein and the activity of malate-dehydrogenase (MDH) were determined in blood serum of trout females with gonads of III stage maturity, according to Mayer's scale, and during spawning period. The decrease of lipids by 42%, of total protein by 18% and the increase of total cholesterol content by 29% and of non-esterified cholesterol by 140% occurred during the spawning. Increased also the activity of malate-dehydrogenase. text/html en_US Pensoft Publishers Seasonal changes in blood serum of trout females Salmo trutta L Research Article

10.3750/AIP1972.02.2.03 1972-12-31 aiep

author Węgrzynowicz, R. author Kłyszejko, B. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 21 25 1972 10.3750/AIP1972.02.2.03 https://aiep.pensoft.net/article/24753/ https://aiep.pensoft.net/article/24753/download/pdf/ Measured performance of fishes Perca fluviatilis (L.)., Abramis brama (L.), Rutilus rutilus (L.) and Anguilla anguilla (L.) proved distinct differences by species in ability to dynamic effort under determined conditions of environment. text/html en_US Pensoft Publishers Specific adaptability to dynamic effort of fishes Abramis brama (L.), Rutilus rutilus (L.), Perca fluviatilis (L)., Anguilla anguilla (L.) Research Article

10.3750/AIP1972.02.2.04 1972-12-31 aiep

author Węgrzynowicz, R. author Zbanyszek, R. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 27 33 1972 10.3750/AIP1972.02.2.04 https://aiep.pensoft.net/article/24754/ https://aiep.pensoft.net/article/24754/download/pdf/ The investigations related to seasonal and daily variations of oxygen consumption by liver and kidney of bream with consideration of sex. The results obtained indicate to more intensive respiratory metabolism in autumn in comparison to summer season. Highest metabolic intensity ascertained at males during autumn season. Daily variations became also very distinct. Increased respiratory metabolism in liver and in kidney was apparent during the evening; highest respiratory metabolism noted at males during evening. text/html en_US Pensoft Publishers Seasonal and daily variations of respiratory metabolism of liver and kidney of bream Abramis brama (L.) Research Article

10.3750/AIP1972.02.2.05 1972-12-31 aiep

author Węgrzynowicz, R. author Zbanyszek, R. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 35 39 1972 10.3750/AIP1972.02.2.05 https://aiep.pensoft.net/article/24755/ https://aiep.pensoft.net/article/24755/download/pdf/ Investigations were performed on changes of respiration intensity of kidney and liver of bream resulting from reversible anaesthesia. Each fish was subjected to test of 1.8 V direct current during 5 minutes remaining in homogenous electric field. Reversible anaesthesia increased the intensity of respiration of both organs. The investigations proved also the existing correlation between the weight of body and the extent of metabolic changes of liver and kidney in reversible anaesthesia. Sensitivity of fish to current test decreased in relation to increase of its weight. text/html en_US Pensoft Publishers Tissular respiration of liver and kidney from bream Abramis brama (L.) in reversible anaesthesia Research Article

10.3750/AIP1972.02.2.07 1972-12-31 aiep

author Nguyen, van Khanh author Drzycimski, I. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 41 53 1972 10.3750/AIP1972.02.2.07 https://aiep.pensoft.net/article/24757/ https://aiep.pensoft.net/article/24757/download/pdf/ The investigations of Baltic sprat have been carried out for many years, while the sprat of Bornholm Depth had never been subjected to any definite biologic analysis. Subjected to these investigations was the sprat obtained from industrial catches during 1969 and 1970. The length of body, rate of growth, age, participation of sexes, maturity of gonads and the period of spawning were investigated and determined. The stomachs of sprats were analysed for composition during the whole year. text/html en_US Pensoft Publishers Certain biological features of sprat Sprattus sprattus balticus (G. Schneider) from Bornholm Depth Research Article

10.3750/AIP1972.02.2.08 1972-12-31 aiep

author Nguyen, van Khanh author Drzycimski, I. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 55 66 1972 10.3750/AIP1972.02.2.08 https://aiep.pensoft.net/article/24758/ https://aiep.pensoft.net/article/24758/download/pdf/ 1048 sprat stomachs were subjected to analysis and determination of: qualitative composition of food; average weight of food; percent (quantity) of empty stomachs; index of fulfilment acc. to Blegvad; frequency of plankton appearance in food according to Hertling and nourishment coefficient acc. to Fulton. text/html en_US Pensoft Publishers Feeding and food composition of sprat from Bornholm Depth Research Article

10.3750/AIP1972.02.2.09 1972-12-31 aiep

author Wojciechowski, J. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 67 75 1972 10.3750/AIP1972.02.2.09 https://aiep.pensoft.net/article/24759/ https://aiep.pensoft.net/article/24759/download/pdf/ The observations were made on participation in catches and on biology of cutlassfish Trichiurus lepturus L. of Mauritania shelf during fishing voyage of factory trawler. The length, age, weight, maturing and feeding of cutlassfish had been investigated. text/html en_US Pensoft Publishers Observations on biology of cutlassfish Trichiurus lepturus L. (Trichiuridae) of Mauritania shelf Research Article

10.3750/AIP1972.02.2.10 1972-12-31 aiep

author Nguyen Xuan, Loc author Wojciechowski, J. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 77 94 1972 10.3750/AIP1972.02.2.10 https://aiep.pensoft.net/article/24761/ https://aiep.pensoft.net/article/24761/download/pdf/ The observations had been made during 1968-1970 on biology of fish of Dentex species of north-west African coast. The isolation of features differing these species permitted to form semantic arrangement for their denotation. The age and length composition, weight and rate of growth in relation to species, region of fishing and depth of their residing had also been investigated. text/html en_US Pensoft Publishers Comparative biology of fish from genus Dentex (Sparidae) of north-west African coast Research Article

10.3750/AIP1972.02.2.11 1972-12-31 aiep

author Venkateswarlu, T. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 95 97 1972 10.3750/AIP1972.02.2.11 https://aiep.pensoft.net/article/24762/ https://aiep.pensoft.net/article/24762/download/pdf/ This paper deals with an account of an abnormal pectoral fin in Puntius amphibia (Val.), obtained from the river Ganges at Patna (Bihar, India). The specimen possessed two pectoral fins, instead of one, on the left side. text/html en_US Pensoft Publishers A note on an abnormal pectoral fin in Puntius amphibia (Val.) Research Article

10.3750/AIP1972.02.2.12 1972-12-31 aiep

author Chojnacki, J. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 99 103 1972 10.3750/AIP1972.02.2.12 https://aiep.pensoft.net/article/24766/ https://aiep.pensoft.net/article/24766/download/pdf/ Total, individual weight of squids I. illecebrosus and L. pealei defined by formula, assumes various value in relation to length of body. Coefficient of correlation between length and weight of these species, attains high positive value. Technological output is strictly dependent on length of body. text/html en_US Pensoft Publishers Length-weight relationship for squids-Illex illecebrosus Lesueur and Loligo pealei (Lesueur) Research Article

10.3750/AIP1972.02.2.13 1972-12-31 aiep

author Fik, M. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 105 111 1972 10.3750/AIP1972.02.2.13 https://aiep.pensoft.net/article/24767/ https://aiep.pensoft.net/article/24767/download/pdf/ The activity of muscular cathepsins was investigated at seven species of marine fish in 1% KCl extracts. The activity was determined by Anson&prime text/html en_US Pensoft Publishers Activity of muscular cathepsins of some marine fishes. Research Article

10.3750/AIP1972.02.2.14 1972-12-31 aiep

author Fik, M. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 113 118 1972 10.3750/AIP1972.02.2.14 https://aiep.pensoft.net/article/24768/ https://aiep.pensoft.net/article/24768/download/pdf/ The autolysis of jack fish muscles was investigated under various conditions of pH and temperature. The intensity of autolysis was determined according to increase of amino nitrogen denoted by formalin titration. text/html en_US Pensoft Publishers Optimal conditions for autolysis of jack fish muscles Trachurus trachurus (L.) Research Article

10.3750/AIP1972.02.2.15 1972-12-31 aiep

author Zięcik, M. author Kasperek, S. 1972-12-31 1972-12-31 1972 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 2 119 134 1972 10.3750/AIP1972.02.2.15 https://aiep.pensoft.net/article/24769/ https://aiep.pensoft.net/article/24769/download/pdf/ An introduction of new organisation forms in fishing, such as flotilla fishing calls for scientific organisation in service processes of motherships. An attempt have been made to apply one method of operational study based on "theory of congestion and queuing" in order to determine and to bring to minimum the losses resulting from frequent formation of congestions and queuing at motherships. text/html en_US Pensoft Publishers Theory of queuing as selected method for operations research on services of motherships rendered to fishing vessels at sea Research Article

10.3750/AIP1973.03.1.01 1973-06-30 aiep

author Winnicki, A. author Cykowska, C. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 3 9 1973 10.3750/AIP1973.03.1.01 https://aiep.pensoft.net/article/24770/ https://aiep.pensoft.net/article/24770/download/pdf/ Water uptake of eggs of Salmo trutta L. and Salmo gairdneri Rich. in water and 1/15 M buffers was studied. It was found that if buffers prevent the formation of the perivitelline space in the eggs placed in them immediately after spawning, they do not exclude its normal formation in the eggs placed for 2 or even 1 minutes in water prior to their being transferred to a buffer. The authors express their opinion that the water uptake of eggs proceeds in two stages and that there are correspondingly two factors, an osmotic and a colloidal, responsible for this process. text/html en_US Pensoft Publishers New data on the mechanism of water uptake in salmonid eggs Research Article

10.3750/AIP1973.03.1.02 1973-06-30 aiep

author Tomasik, L. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 11 17 1973 10.3750/AIP1973.03.1.02 https://aiep.pensoft.net/article/24771/ https://aiep.pensoft.net/article/24771/download/pdf/ Spermatozoan motility was examined in Salmo trutta L., Salmo trutta m. lacustris L., Salmo gairdneri Rich. and Salvelinus fontinalis (Mitch.) from different spawning grounds and fish cultures. Fairly big differences were found in motility between spermatozoa examined under identical conditions. These differences were observed both between individual species (the spermatozoa of the lake- and sea-trout showed the highest viability and those of the rainbow trout the lowest) and between particular specimens; in this last case the differences seemed to be caused chiefly by different degrees of maturity of the gonads. text/html en_US Pensoft Publishers Specific and individual differences in motility between salmonid spermatozoa Research Article

10.3750/AIP1973.03.1.03 1973-06-30 aiep

author , Pham-Thuoc author Szypuła, J. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 19 37 1973 10.3750/AIP1973.03.1.03 https://aiep.pensoft.net/article/24772/ https://aiep.pensoft.net/article/24772/download/pdf/ Presented in this work is the biological characteristic of gilt sardine. The investigation comprised: length, age, rate of growth in length and weight, maturity of gonads and fecundity, food and intensity of feeding. text/html en_US Pensoft Publishers Biological characteristic of gilt sardine Sardinella aurita Cuv. et Val., 1847 from North West African coast Research Article

10.3750/AIP1973.03.1.04 1973-06-30 aiep

author Nguyen-Xuan, Loc author Wojciechowski, J. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 39 48 1973 10.3750/AIP1973.03.1.04 https://aiep.pensoft.net/article/24773/ https://aiep.pensoft.net/article/24773/download/pdf/ The observations were made during fishing voyage to African fishing grounds and with use of materials delivered to country. It ascertained that the fish feeds on the organisms which belong to various systematic groups and composition of food depends from region. It is characteristic for each species and maturity stage of the fish. text/html en_US Pensoft Publishers Food and feeding of fish of Dentex genus (Sparidae) from Mauritania and Senegal shelf Research Article

10.3750/AIP1973.03.1.05 1973-06-30 aiep

author Nguyen-Xuan, Loc author Wojciechowski, J. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 49 59 1973 10.3750/AIP1973.03.1.05 https://aiep.pensoft.net/article/24774/ https://aiep.pensoft.net/article/24774/download/pdf/ The observations were made on maturity and fecundity of Dentex maerophthalmus. It ascertained that: the species possesses the portional spawning; the period of spawning depends from age, length and depth of waters. The fecundity was examined in relation to age, weight and length of females. text/html en_US Pensoft Publishers Maturity and fecundity of Dentex macrophthalmus (Sparidae) from North West African coast Research Article

10.3750/AIP1973.03.1.06 1973-06-30 aiep

author Grabda, J. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 61 74 1973 10.3750/AIP1973.03.1.06 https://aiep.pensoft.net/article/24775/ https://aiep.pensoft.net/article/24775/download/pdf/ The author describes external structure of a female Cecrops latreilli Leach, 1816 in chalimus final stage preceding the adult and matured form. This is the unique found so far larva stage of Cecrops genus. New morphological and biological details of parasite are presented. text/html en_US Pensoft Publishers Contribution to knowledge of biology of Cecrops latreillii Leach, 1816 (Caligolida: Cecropidae) the parasite of the ocean sunfish Mola mola (L.) Research Article

10.3750/AIP1973.03.1.07 1973-06-30 aiep

author Wierzbicka, J. author Wierzbicki, K. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 75 89 1973 10.3750/AIP1973.03.1.07 https://aiep.pensoft.net/article/24779/ https://aiep.pensoft.net/article/24779/download/pdf/ Metacercariae of Apophallus donicus (Skrjabin et Lindtrop, 1919) Price, 1931 and of A. muehlingi (Jägerskiöld, 1899) Lühe, 1909 were found in fishes of Szczecin Firth and Dąbie lake, as a new parasitic fauna of Poland. It was established that A. donicus and A. muehlingi are specific to perches and cyprinids, respectively. Detailed description and comparison of both species obtained from various hosts are given. text/html en_US Pensoft Publishers Metacercariae of the genus Apophallus Lühe, 1909 (Trematoda: Heterophyidae) in Western Pomerania of Poland Research Article

10.3750/AIP1973.03.1.08 1973-06-30 aiep

author Pilarczyk, A. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 91 106 1973 10.3750/AIP1973.03.1.08 https://aiep.pensoft.net/article/24780/ https://aiep.pensoft.net/article/24780/download/pdf/ Tumours appearing on eels with the "cauliflower disease" are morphologically different from each other. The present paper was aimed at the investigation of a possible effect of these differences on a histological structure. The authors attention was also paid to the initial stages in the papillae formation; the role of particular corium elements in this process was also taken into consideration. text/html en_US Pensoft Publishers The morphological and histological structure of tumours in the "cauliflower disease" (papilloma) of eels Research Article

10.3750/AIP1973.03.1.09 1973-06-30 aiep

author Dzidziul, A. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 107 118 1973 10.3750/AIP1973.03.1.09 https://aiep.pensoft.net/article/24782/ https://aiep.pensoft.net/article/24782/download/pdf/ Papillomatosis anguillarum causes inflammation, degeneration and necrosis changes in fiver and kidney of the diseased eels. The character and profound histopathological changes observed depending upon type and quantity of tumours occurring on the skin of the eel. text/html en_US Pensoft Publishers Histopathological changes in liver and kidney of the eel, Anguilla anguilla L., affected by Papillomatosis anguillarum Research Article

10.3750/AIP1973.03.1.10 1973-06-30 aiep

author Sagan, Z. author Felińska, C. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 119 124 1973 10.3750/AIP1973.03.1.10 https://aiep.pensoft.net/article/24784/ https://aiep.pensoft.net/article/24784/download/pdf/ The authors showed that the bovine, pig and goat sera make a source of model agglutinins for determinations of a new group feature of eel erythrocytes An(a). The An(a) feature was found in 40.4% of eels out of 62 examined eel individuals from the Szwaderki Lake. text/html en_US Pensoft Publishers Studies on a new group feature of eel erythrocytes-An(a) Research Article

10.3750/AIP1973.03.1.11 1973-06-30 aiep

author Kłyszejko, B. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 125 137 1973 10.3750/AIP1973.03.1.11 https://aiep.pensoft.net/article/24785/ https://aiep.pensoft.net/article/24785/download/pdf/ Osmotic properties (osmotic pressure and concentration of Na+, K+ and Ca++) of the blood serum of the pike Esox lucius L. were studied in natural environments of various salinity (Lake Dąbie - fresh water, Szczecin Bay - 0,4 -1,2 per thousand salinity; Pomeranian Bay -5,4 - 8,6 per thousand salinity) and in synthetic sea water of a salinity of 2, 7, 12, 13, 14, and 16 per thousand. text/html en_US Pensoft Publishers Osmotic changes in the blood serum of the pike Esox lucius L. during the process of adaptation to the increased salinity of water Research Article

10.3750/AIP1973.03.1.12 1973-06-30 aiep

author Świniarski, J. author Małolepszy, W. 1973-06-30 1973-06-30 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 1 139 147 1973 10.3750/AIP1973.03.1.12 https://aiep.pensoft.net/article/24786/ https://aiep.pensoft.net/article/24786/download/pdf/ The present paper describes studies on changes in mesh sizes of the cod-end netting of trawls used by the B-18 type freezing trawlers belonging to the Deep Sea Fisheries Company (PPDiUR) "Odra" in Świnoujście. Measurements of the mesh sizes were taken from 6 cod-ends of bottom and pelagic trawlers, using a Polish Longitudinal-force mesh gauge. It was shown that a significant increase of .mesh sizes in the trawl cod-ends occurred during the trawl exploitation. Meshes of the upper part of trawls subjected to the greater deformations. Detailed results of investigations are given in Table 2 and 3. text/html en_US Pensoft Publishers Changes in mesh sizes of cod-end netting of trawls used by the trawlers type B-18 during their exploitation Research Article

10.3750/AIP1973.03.2.01 1973-12-31 aiep

author Marciak, Z. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 3 15 1973 10.3750/AIP1973.03.2.01 https://aiep.pensoft.net/article/24788/ https://aiep.pensoft.net/article/24788/download/pdf/ The author determined the correlations in the growth of bream, pike perch, roach, whitefish and small whitefish - Coregonus albula coexisting in lakes. Negative correlations of growth are noted for species of various thermal requirements. The pairs of species playing a similar role in ichthyofauna assemblages of overlapping feeding niches, living in various types of lakes as well as the fish of various sizes demonstrated separate types of growth correlation. The pairs of species forming the relation of “predator-prey” demonstrated special correlations of growth. text/html en_US Pensoft Publishers On correlations between the growth of certain lake fish species Research Article

10.3750/AIP1973.03.2.02 1973-12-31 aiep

author Trzebiatowski, R. author Narożański, A. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 17 27 1973 10.3750/AIP1973.03.2.02 https://aiep.pensoft.net/article/24789/ https://aiep.pensoft.net/article/24789/download/pdf/ Some biological features of the spawning stock of vimb Vimba vimba vimba (L.) reproducing in the Rega River are discussed in the present paper. The investigated material comprising 845 individuals was collected within the years 1970-1972 from the spawning ground situated near Trzebiatów. The age analysis of the stock revealed that 8 years old fishes prevailed in 1970 and 1971, while in 1972 5 years old ones were predominating. The Rega vimb growth rate is higher than that of the fishes from the other water bodies. Particularly high growth rate has been noted for the first 7 years of life. Some symptoms of the stock rejuvenation occurred within, the period investigated. text/html en_US Pensoft Publishers A contribution to studies on the biology of vimb - Vimba vimba vimba (L.) from the Rega River Research Article

10.3750/AIP1973.03.2.03 1973-12-31 aiep

author Soliman, I.A.F. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 29 65 1973 10.3750/AIP1973.03.2.03 https://aiep.pensoft.net/article/24792/ https://aiep.pensoft.net/article/24792/download/pdf/ In this study, the association between morphometric, meristic and osteological characters was used comparatively. Therefore, as a result of this work, five subspecies were determined along the coasts of NE-Atlantic, Mauritania, SW- and S-Africa, and Mediterranean Sea; and one species off shores of the United States; namely: Merluccius merluccius atlanticus, M. m. senegalensis, M. m. capensis, M. m paradoxus and M. m. mediterraneus and M bilinearis. text/html en_US Pensoft Publishers Variations of fishes of genus Merluccius in Atlantic Ocean and Mediterranean Sea Research Article

10.3750/AIP1973.03.2.04 1973-12-31 aiep

author Seyda, M. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 67 76 1973 10.3750/AIP1973.03.2.04 https://aiep.pensoft.net/article/24793/ https://aiep.pensoft.net/article/24793/download/pdf/ Results of studies on the eel helminths from the Szczecin Firth are presented. 12 parasitic species were found, 4 of them being recorded for the first time in eel in Poland. text/html en_US Pensoft Publishers Parasites of eel Anguilla anguilla (L.) from the Szczecin Firth and adjacent waters Research Article

10.3750/AIP1973.03.2.05 1973-12-31 aiep

author Dabrowski, T. author Stodolnik, L. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 77 85 1973 10.3750/AIP1973.03.2.05 https://aiep.pensoft.net/article/24795/ https://aiep.pensoft.net/article/24795/download/pdf/ Muscles of the sixteen species of fishes originating from fishing grounds of Middle and North West Atlantic and Baltic Sea were tested for total, free and connected cholesterol contents and for unsaponifying substances content. text/html en_US Pensoft Publishers Investigating cholesterol content in the tissues of selected marine fish Research Article

10.3750/AIP1973.03.2.06 1973-12-31 aiep

author Sagan, Z. author Felińska, C. 1973-12-31 1973-12-31 1973 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 3 87 89 1973 10.3750/AIP1973.03.2.06 https://aiep.pensoft.net/article/24797/ https://aiep.pensoft.net/article/24797/download/pdf/ It has been established that while absorbing certain horse sera with the An(a) eel erythrocytes, the anti An(b) sera can be obtained. This serum agglutinates mainly the eel erythrocytes that have not been agglutinated with the anti-An(a) sera. text/html en_US Pensoft Publishers Studies on a new group feature of the eel erythrocytes - An(b) Research Article

10.3750/AIP1974.04.1.01 1974-06-30 aiep

author Grabda, J. 1974-06-30 1974-06-30 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 1 3 21 1974 10.3750/AIP1974.04.1.01 https://aiep.pensoft.net/article/24798/ https://aiep.pensoft.net/article/24798/download/pdf/ The analysis of an infestation level of the Baltic herring (Clapea harengus L.) with Anisakis simplex (Rud.) larvae as well as otoliths and gonad maturity examinations allowed to distinguish, among the Pomeranian Gulf and adjacent area herrings, 4 herring stocks appearing successively in the region investigated. The seasonal occurrence of Anisakis larvae in herring from the examined fishing regions is related to the sequence of arrival of the different stocks. Suspected sources of invasion are discussed, the Anisakis invasion being related to the North Sea herring migrations. text/html en_US Pensoft Publishers The dynamics of the nematode larvae, Anisakis simplex (Rud.) invasion in the South Western Baltic herring (Clupea harengus L.) Research Article

10.3750/AIP1974.04.1.02 1974-06-30 aiep

author Einszporn-Orecka, T. author Wierzbicka, J. 1974-06-30 1974-06-30 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 1 23 38 1974 10.3750/AIP1974.04.1.02 https://aiep.pensoft.net/article/24801/ https://aiep.pensoft.net/article/24801/download/pdf/ The nature of anatomo-pathological and histopathological changes as well as the quantitative and qualitative evaluation of the peripheral blood and the hemopoiesis centres allowed to detect symptoms of leukemia in a bream female. The picture of changes indicates to a certain similarity between this disease and a form of granulocytic leukemia occurring in animal, particularly in hens. Since the literature available provides no description of any similar disease in fishes had been found, we have attempted to give a detail characteristics of these changes. text/html en_US Pensoft Publishers Hematological and histopathological changes in leukemia of bream - Abramis brama (L.) Research Article

10.3750/AIP1974.04.1.03 1974-06-30 aiep

author Kawka, T. 1974-06-30 1974-06-30 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 1 39 52 1974 10.3750/AIP1974.04.1.03 https://aiep.pensoft.net/article/24802/ https://aiep.pensoft.net/article/24802/download/pdf/ The analysis of cutting force in relation to kinematic conditions of raw fish cutting are presented in this paper. Method of indirect measurements is applied in these analysis. It ascertained that, the cutting speed affects the value of cutting force. It determined the highest working parameters for circular cutters in fish beheading. The results of analysis are presented graphically. text/html en_US Pensoft Publishers Analysis on determination of highest working parameters of circular cutters in mechanical processing of fish Research Article

10.3750/AIP1974.04.1.04 1974-06-30 aiep

author Świniarski, J. author Guźniczak, K. 1974-06-30 1974-06-30 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 1 53 69 1974 10.3750/AIP1974.04.1.04 https://aiep.pensoft.net/article/24803/ https://aiep.pensoft.net/article/24803/download/pdf/ The geometric parameters of fish shoals were determined according to the echogrammes of sounded fish shoals. For analyses used the material collected between 17.12.1972 and 25.02.1973 by m/t "Kantar" at Georges Bank fishing grounds. The analysed echogrammes relate to fishing of mackerel. text/html en_US Pensoft Publishers Assessment of the fish shoal abundance from the net sounder and vertical sounder records Research Article

10.3750/AIP1974.04.1.05 1974-06-30 aiep

author Niegolewski, A. author Molenda, M. 1974-06-30 1974-06-30 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 1 71 89 1974 10.3750/AIP1974.04.1.05 https://aiep.pensoft.net/article/24804/ https://aiep.pensoft.net/article/24804/download/pdf/ This paper aims at determining the effectiveness of the investment outlay and total production costs connected with obtaining and delivering to the wholesale market protein products derived from:- breeding farm animals in agriculture and processing them (meat, milk, eggs, broilers),- sea fisheries and fish processing industry (fishes and fish products).The calculation of costs and investment outlay has been carried out in reference to 1 kg of edible parts as well as to 1 kg of protein. text/html en_US Pensoft Publishers A comparison of production costs and investment outlay effectiveness in the production of protein in 1969-1972 Research Article

10.3750/AIP1974.04.2.01 1974-12-31 aiep

author Tomasik, L. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 4 9 1974 10.3750/AIP1974.04.2.01 https://aiep.pensoft.net/article/24805/ https://aiep.pensoft.net/article/24805/download/pdf/ Survival of sperm from Salmo trutta L., Salmo gairdneri Rich., Salvelinus fontinalis (Mitch.) was investigated at constant temperatures (1.0°; 5.0°; 10.0°; 15.0°C). The longest period of survival has been found to take place at the temperature range from 1.0°- 5.0°. Further it has been stated that the duration of sperm storage at various temperatures has only a slight influence on the activity time of spermatozoa. Differences have also been revealed with regard to various fish species, fish individuals, as well as individual spermatozoa. text/html en_US Pensoft Publishers Survival of "dry" salmonid sperm at temperatures above 0° centigrade Research Article

10.3750/AIP1974.04.2.02 1974-12-31 aiep

author Sobociński, A. author Winnicki, A. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 11 17 1974 10.3750/AIP1974.04.2.02 https://aiep.pensoft.net/article/24807/ https://aiep.pensoft.net/article/24807/download/pdf/ The influence of NaCl solutions on the hardening process of egg membranes of the trout, Salmo trutta L. was investigated. Experiments have proved that the processes connected with absorption of water and with hardening of the membranes may take place even in a habitat of a considerable salinity, but their initiation must be preceded by at least a short period of immersion of the egg in fresh water. It is the authors′ intention to try to explain the phenomenon of a different effect of solutions of various concentrations on the egg membranes as well as the increase of the membrane hardening velocity in NaCl solutions in comparison with the standard. text/html en_US Pensoft Publishers Influence of NaCl solutions at various concentrations on hardening of egg membranes of trout - Salmo trutta L Research Article

10.3750/AIP1974.04.2.03 1974-12-31 aiep

author Wysokiński, A. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 19 31 1974 10.3750/AIP1974.04.2.03 https://aiep.pensoft.net/article/24808/ https://aiep.pensoft.net/article/24808/download/pdf/ The combined biological and fisheries investigations carried out from the Polish research vessel "Profesor Siedlecki" on the Argentine shelf resulted, among other things, in establishing the large-size hake occurrence that had not been observed before. The fish meristic characters, presented herein, correspond with those of Merluccius polylepis Ginsburg, 1954 known from the southern coast of Chile. The distribution limit for both the Argentine hakes, M. hubbsi and M. polylepis described is set in the Atlantic Ocean between 47 and 48°S. Taxonomically, M. polylepis to the greatest extent resembles M. australis and M. paradoxus. text/html en_US Pensoft Publishers Taxonomic position of hake, Merluccius polylepis Ginsburg, 1954, from the Falkland Islands and Tierra del Fuego Region Research Article

10.3750/AIP1974.04.2.04 1974-12-31 aiep

author Chodyniecki, A. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 33 41 1974 10.3750/AIP1974.04.2.04 https://aiep.pensoft.net/article/24812/ https://aiep.pensoft.net/article/24812/download/pdf/ Investigated the factors responsible for antagonistic and stimulating activity of the selected bacteria strains of Aeromonas and Pseudomonas genus. By application of paper chromatography method and gel separation on Sephadex column, obtained several fractions of bacterial culture examined extracts. Determinations were made on the biological activity of fractions and on the presence in them of proteins, lipids and polysaccharides. text/html en_US Pensoft Publishers Studies on the causes of biological activity of water bacteria Aeromonas and Pseudomonas genus Research Article

10.3750/AIP1974.04.2.05 1974-12-31 aiep

author Grabda, E. author Einszporn-Orecka, T. author Felińska, C. author Zbanyszek, R. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 43 71 1974 10.3750/AIP1974.04.2.05 https://aiep.pensoft.net/article/24813/ https://aiep.pensoft.net/article/24813/download/pdf/ In the experimental way methemoglobinemia was caused to occur in rainbow trout, Salmo gairdneri Rich., 1836 by keeping the fishes for 11 weeks in Ca(NO3)2 and KNO3 solutions, the NO3 doses in which being 26.2 mg/l and 30.6 mg/l, respectively. At the same time measurements of the hepatic tissue respiration rate, histopathologic studies of fiver as well as examination of the peripheral blood and hematopoietic organs were carried out. Marked changes which eventually could be lethal were found out. text/html en_US Pensoft Publishers Experimental methemoglobinemia in rainbow trout Research Article

10.3750/AIP1974.04.2.06 1974-12-31 aiep

author Einszporn-Orecka, T. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 73 82 1974 10.3750/AIP1974.04.2.06 https://aiep.pensoft.net/article/24814/ https://aiep.pensoft.net/article/24814/download/pdf/ As a result of studies on the eel (Anguilla anguilla L.) hematologic parameters, certain characteristic symptoms typical of the "cauliflower disease" (Papillomatosis anguillarum) have been established, both the different stages in tumours′ growth and anatomo-pathological lesions being taken into account. text/html en_US Pensoft Publishers Differences in the eel peripheral blood hematologic parameters associated with papilloma (Papillomatosis anguillarum) Research Article

10.3750/AIP1974.04.2.07 1974-12-31 aiep

author Jayaram, K.C. author Venkateswarlu, T. author Govindan, N. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 83 84 1974 10.3750/AIP1974.04.2.07 https://aiep.pensoft.net/article/24816/ https://aiep.pensoft.net/article/24816/download/pdf/ The authors recorded three abnormal specimens of teleost fishes. The specimens of Labeo boga (Hamilton) and Xenentodon cancila (Hamilton) were with deformed caudal fins, while that of Channa gachua (Hamilton) was devoided of left eye. The descriptions of the abnormalities and comments on them are given. text/html en_US Pensoft Publishers Record of three abnormal fish specimens from the Cauvery River Research Article

10.3750/AIP1974.04.2.08 1974-12-31 aiep

author Niegolewski, A. author Molenda, M. author Piaszczyński, W. author Rusin, B. author Świniarski, J. 1974-12-31 1974-12-31 1974 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 4 85 111 1974 10.3750/AIP1974.04.2.08 https://aiep.pensoft.net/article/24818/ https://aiep.pensoft.net/article/24818/download/pdf/ The present study comprises an analysis of the interdependence of the fishing effort and effects of the Polish fishery on the ICNAF waters within the years 1963-1969. In the introductory chapters methods and econometric models applied are described, a particular attention being paid to the standardized measures of the fishing effort for various kinds of vessels operating on the ICNAF area. The sources of information, serving as a basis for the study are also presented. Subsequent chapters expose the seasonal character of fishery, its three forms, i.e., the seasonal character of fishing effort, fishing yields and fishing being discussed as well as their interrelationship. Results of the analysis are related to the ICNAF subdivision and the conclusion are drawn. text/html en_US Pensoft Publishers Economical aspects of fishery management on ICNAF waters Research Article

10.3750/AIP1975.05.1.01 1975-06-30 aiep

author Goryczko, K. author Tomasik, L. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 3 12 1975 10.3750/AIP1975.05.1.01 https://aiep.pensoft.net/article/24819/ https://aiep.pensoft.net/article/24819/download/pdf/ An attempt to estimate the quality of milt obtained from trout males stripped three times was made. The estimation was carried out through examining the spermatozoa motility and verified by analysing the viability and fertilization degree of the experimental roe. text/html en_US Pensoft Publishers An influence of males on the viability and fertilization degree of trout eggs Research Article

10.3750/AIP1975.05.1.02 1975-06-30 aiep

author Kompowski, A. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 13 29 1975 10.3750/AIP1975.05.1.02 https://aiep.pensoft.net/article/24820/ https://aiep.pensoft.net/article/24820/download/pdf/ An attempt to distinguish local stocks of horse mackerel was made basing both on the comparison of morphological features of fish from three West African shelf regions (Ifni: 28°34′-29°52′N, Cap Blanc: 21°00′-24°52′N, Namibia: 22°34′-26°08′S) and on the literature data. text/html en_US Pensoft Publishers The intraspecific geographical variability of horse mackerel Trachurus trachurus (L.) in the West African shelf waters Research Article

10.3750/AIP1975.05.1.03 1975-06-30 aiep

author Grabda, J. author Soliman, I.A.F.M. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 31 40 1975 10.3750/AIP1975.05.1.03 https://aiep.pensoft.net/article/24822/ https://aiep.pensoft.net/article/24822/download/pdf/ 3 species of parasitic copepods were found on Atlantic hakes caught off the western coasts of Europe, Africa, the Mediterranean Sea (off Alexandria), and North America. The species are: Chondracanthus merluccii, Brachiella merluccii and Parabrachiella australis. The parasites importance as indicators of the affinities between hakes is discussed. Various hypotheses concerning the origin of the genus Merluccius are presented. text/html en_US Pensoft Publishers Copepods - parasites of the genus Merluccius from the Atlantic Ocean and Mediterranean Sea Research Article

10.3750/AIP1975.05.1.04 1975-06-30 aiep

author Węgrzynowicz, R. author Kłyszejko, B. author Zbanyszek, R. author Marczuk, K. author Radziun, K. author Muzykiewicz, J. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 41 44 1975 10.3750/AIP1975.05.1.04 https://aiep.pensoft.net/article/24823/ https://aiep.pensoft.net/article/24823/download/pdf/ The frequency of the heart stimulations and respirations of the bulltrout (Salmo trutta trutta L.) was examined from the point of view of the daily rate in the aquarium conditions. text/html en_US Pensoft Publishers Daily changes of the heart and respiratory rates of the bulitrout (Salmo trutta trutta L.) Research Article

10.3750/AIP1975.05.1.05 1975-06-30 aiep

author Węgrzynowicz, R. author Kłyszejko, B. author Głębocka, G. author Muzykiewicz, J. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 45 50 1975 10.3750/AIP1975.05.1.05 https://aiep.pensoft.net/article/24824/ https://aiep.pensoft.net/article/24824/download/pdf/ The influence of the DBS (Deterlon) and TBS (Marlon) type detergents concentration in water on the adaptability to the physical effort of the bream (Abramis brama L.) in the aquarium conditions was investigated using our own method for application of the general physical effort to fishes. text/html en_US Pensoft Publishers Influence of the DBS (Deterlon) and TBS (Marlon) type detergents on the bream Abramis brama (L.) under the applied load of the general physical effort Research Article

10.3750/AIP1975.05.1.06 1975-06-30 aiep

author Chodyniecki, A. author Kurpios, M. author Protasowicki, M. author Ociepa, A. author Juran, J. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 51 57 1975 10.3750/AIP1975.05.1.06 https://aiep.pensoft.net/article/24825/ https://aiep.pensoft.net/article/24825/download/pdf/ Determinations were made on mercury content in muscles of cod and herring from Pomeranian Gulf and of pikeperch and eel from Szczecin Firth. Additionally, the level of Hg was measured in fiver and kidneys of selected cod and herring batch. Eventual relationship was investigated between mercury content, species of fish, weight and fishing grounds. text/html en_US Pensoft Publishers Studies on mercury content in selected fish species from Pomeranian Gulf and Szczecin Firth Research Article

10.3750/AIP1975.05.1.07 1975-06-30 aiep

author Kawka, T. author Kolbiarz, A. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 59 62 1975 10.3750/AIP1975.05.1.07 https://aiep.pensoft.net/article/24826/ https://aiep.pensoft.net/article/24826/download/pdf/ The reported study on the method of hydrodynamic cleaning of fish from viscera was motivated by the current need of having more universal devices than the processing machines built so far. The research was carried out with two differently constructed terminal pieces, to which water and air were supplied. The tests proved the advisability of using a water-air stream. Good results have been obtained in gutting small fish using a pressure of 3 · 105 N/m2 for the water and 5 • 105 N/m2 for air, outlet opening diameter 0.006 m. text/html en_US Pensoft Publishers Fish gutting with the stream of water Research Article

10.3750/AIP1975.05.1.08 1975-06-30 aiep

author Trzebiatowski, R. author Filipiak, J. author Seyda, M. 1975-06-30 1975-06-30 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 1 63 72 1975 10.3750/AIP1975.05.1.08 https://aiep.pensoft.net/article/24828/ https://aiep.pensoft.net/article/24828/download/pdf/ During the period of 145 days, in 1974, an experiment with the European eel (Anguilla anguilla L.) culture into the net cages was carried into effect. The cages, 6 in number, were kept in warm water canal running out from the "Pomorzany II" power station in Szczecin. The water temperature in this canal evermore was above 20°C (21-32°C), and the oxygen content never fall down below 6.5 mg/litre throughout all 4 months of research. The eels were fed with minced freshwater fish at the first period of experiment, and hereafter with the mackerel flesh only. Growth of the fishes was unequal and very discriminating. Fish mortality amounts to 6.15 per cent. text/html en_US Pensoft Publishers Preliminary results of research on the European eel (Anguilla anguilla L.) culture in warm water from the "Pomorzany II" power station Research Article

10.3750/AIP1975.05.2.01 1975-12-31 aiep

author Grabda, J. author Felińska, C. 1975-12-31 1975-12-31 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 3 11 1975 10.3750/AIP1975.05.2.01 https://aiep.pensoft.net/article/24830/ https://aiep.pensoft.net/article/24830/download/pdf/ The purpose of the present work was to examine the toxicity of fish flesh infected with dead Anisakis larvae by feeding it to white mice at different qualitative and quantitative compositions. The toxicity of fragmented fresh larvae and those previously subjected to the action of different temperatures was also studied. text/html en_US Pensoft Publishers Studies on the toxicity of larval Anisakis simplex (Rud.). Part I. Biological test on white mice Research Article

10.3750/AIP1975.05.2.02 1975-12-31 aiep

author Grabda, J. 1975-12-31 1975-12-31 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 13 23 1975 10.3750/AIP1975.05.2.02 https://aiep.pensoft.net/article/24831/ https://aiep.pensoft.net/article/24831/download/pdf/ The invasion of Theragra chalcogramma by the parasitic copepod Haemobaphes diceraus and the anatomo-pathologic changes induced by these parasites in the organs of the host are described. The data concerning H. theragrae Yamaguti, 1939 and H. enodis Gusev,1951 are also discussed and the supposition as to their synonymy with H. diceraus Wilson, 1917 is put forward. text/html en_US Pensoft Publishers Observations on the localization and pathogenicity of Haemobaphes diceraus Wilson; 1917 (Copepoda: Lernaeoceridae) in the gills of Theragra chalcogramma (Pallas) Research Article

10.3750/AIP1975.05.2.03 1975-12-31 aiep

author Kompowski, A. author Ślósarczyk, W. 1975-12-31 1975-12-31 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 25 38 1975 10.3750/AIP1975.05.2.03 https://aiep.pensoft.net/article/24832/ https://aiep.pensoft.net/article/24832/download/pdf/ This paper contains a short estimate of catches with regard to the yield and specific composition shown against the background of occurring depths and water temperatures; it presents results of the analysis of length and age composition as well as those of growth and mortality of the horse mackerel. Further chapters contain the results of food analysis and the gonad′s state of this species. text/html en_US Pensoft Publishers Biological characteristic of Polish catches of the horse mackerel - Trachurus trachurus capensis Castelnau, 1861 in the region of the South-West African shelf Research Article

10.3750/AIP1975.05.2.04 1975-12-31 aiep

author Zbanyszek, R. 1975-12-31 1975-12-31 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 39 45 1975 10.3750/AIP1975.05.2.04 https://aiep.pensoft.net/article/24833/ https://aiep.pensoft.net/article/24833/download/pdf/ In this histochemical study the occurrence and distribution of acid mucopolysaccharides in the gills of the eel Anguilla anguilla (L.) have been determined and their differentiation into acid mucopolysaccharides containing carboxyl groups and those containing sulphate groups has been carried out. text/html en_US Pensoft Publishers A histochemical study of acid mucopolysaccharides in the gills of the eel Anguilla anguilla (L.) Research Article

10.3750/AIP1975.05.2.05 1975-12-31 aiep

author Zbanyszek, R. 1975-12-31 1975-12-31 1975 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 5 47 64 1975 10.3750/AIP1975.05.2.05 https://aiep.pensoft.net/article/24835/ https://aiep.pensoft.net/article/24835/download/pdf/ Industrial wastes, the main components of which were sulphates and phosphates, induced a decrease in the intensity of staining reactions for mucopolyaaccharides (MPS) in the gills of eels. The changes in the MPS content were positively correlated with the vital changes in fishes kept in waste water with an increased sulphate content at a raised pH value. text/html en_US Pensoft Publishers The effect of sulphates and phosphates (industrial wastes) on the mucopolysaccharides content of the gills of the eel Anguilla anguilla (L.) Research Article

10.3750/AIP1976.06.1.01 1976-06-30 aiep

author Grabda, J. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 3 22 1976 10.3750/AIP1976.06.1.01 https://aiep.pensoft.net/article/24838/ https://aiep.pensoft.net/article/24838/download/pdf/ Larvae of two nematode species: Anisakis simplex (Rud.) and Contracaecum aduncum (Rud.) were found to occur in Baltic cod (Gadus morhua callarias L.). Their occurrence in various fish organs was analysed; the investigations covered also the invasion incidence fish size relationship, the annual variability of infestation and its occurrence in different regions of the Southern Baltic. text/html en_US Pensoft Publishers The occurrence of anisakid nematode larvae in Baltic cod (Gadus morhua callarias L.) and the dynamics of their invasion Research Article

10.3750/AIP1976.06.1.02 1976-06-30 aiep

author Grabda, J. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 23 33 1976 10.3750/AIP1976.06.1.02 https://aiep.pensoft.net/article/24839/ https://aiep.pensoft.net/article/24839/download/pdf/ A description of a new parasitic copepod species, Haemobaphes disphaerocephalus sp.n., of the family Lernaeoceridae is presented. The parasite lives in the gill cavity of Thaleichthys pacificus (Rich.) (Osmeridae), which occurs over the Oregon-Washington shelf in the Pacific Ocean. text/html en_US Pensoft Publishers Haemobaphes disphaerocephalus sp.n. (Copepoda : Lernaeoceridae) from the gill cavity of Thaleichthys pacificus (Richardson, 1836) (Osmeridae) Research Article

10.3750/AIP1976.06.1.03 1976-06-30 aiep

author Kompowski, A. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 35 57 1976 10.3750/AIP1976.06.1.03 https://aiep.pensoft.net/article/24840/ https://aiep.pensoft.net/article/24840/download/pdf/ The author reports his study on the changes in the food composition during the growth of fishes in length, the 24-hour rhythm of feeding and the food convergence. text/html en_US Pensoft Publishers A study on the food and feeding habits of Trachurus trachurus, Tr. trecae, Tr. picturatus and Caranx rhonchus in the region of Cape Blanc Research Article

10.3750/AIP1976.06.1.04 1976-06-30 aiep

author Seyda, M. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 59 65 1976 10.3750/AIP1976.06.1.04 https://aiep.pensoft.net/article/24841/ https://aiep.pensoft.net/article/24841/download/pdf/ The author discusses a mass invasion of cestodes Gymnorhynchus (Gymnorhynchus) gigas in muscles of Brama raii caught off the North-west African coast. text/html en_US Pensoft Publishers On a case of a mass invasion of cestode Gymnorhynchus (Gymnorhynchus) gigas (Cuvier, 1817) larvae in muscles of Brama raii (Bloch, 1791) Research Article

10.3750/AIP1976.06.1.05 1976-06-30 aiep

author Einszporn-Orecka, T. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 67 81 1976 10.3750/AIP1976.06.1.05 https://aiep.pensoft.net/article/24842/ https://aiep.pensoft.net/article/24842/download/pdf/ The symptoms of pestis anguillarum in eels were determined basing on clinical and anatomopathological changes, quantitative hematologic parameters and the cytological evaluation of the peripheral blood and hemopoietic organs. The cytological diagnosis indicates the necrotic processes domination over proliferation. The symptoms are typical of an acute form of the disease and give no successful prognosis for a recovery. text/html en_US Pensoft Publishers Cytological evaluation of the peripheral blood cells and hemopoietic organs in pestis anguillarum of eels Research Article

10.3750/AIP1976.06.1.06 1976-06-30 aiep

author Venkateswarlu, T. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 83 107 1976 10.3750/AIP1976.06.1.06 https://aiep.pensoft.net/article/24843/ https://aiep.pensoft.net/article/24843/download/pdf/ The Author presents the physiographic data and the list of 90 fish species collected from the Bihar region (India) within the years 1966-1970. The fishes were collected within the 70 km radius off Patna. text/html en_US Pensoft Publishers On a collection of fishes from Patna District (Bihar; India) Research Article

10.3750/AIP1976.06.1.07 1976-06-30 aiep

author Fik, M. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 109 118 1976 10.3750/AIP1976.06.1.07 https://aiep.pensoft.net/article/24845/ https://aiep.pensoft.net/article/24845/download/pdf/ The pH and temperature effects on the mackerel muscle autolysis intensity were investigated. The muscle cathepsin was isolated and purified; some properties of the purified enzyme were determined. text/html en_US Pensoft Publishers Studies on the muscle cathepsin activity of mackerel Research Article

10.3750/AIP1976.06.1.08 1976-06-30 aiep

author Grabda, J. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 119 141 1976 10.3750/AIP1976.06.1.08 https://aiep.pensoft.net/article/24846/ https://aiep.pensoft.net/article/24846/download/pdf/ In the present paper the results obtained during in vitro rearing the 3rd stage larvae of Anisakis simplex (Rud.) from Baltic herring and eggs produced by the reared females are summarised. The morphology of developmental stages obtained, i.e., the 3rd and 4th larval, adult males and females, eggs and first larval stages, is described. Different organs being formed during metamorphosis of the nematodes reared are followed. text/html en_US Pensoft Publishers Studies on the life cycle and morphogenesis of Anisakis simplex (Rudolphi, 1809) (Nematoda: Anisakidae) cultured in vitro Research Article

10.3750/AIP1976.06.1.09 1976-06-30 aiep

author Chełkowski, Z. author Chełkowska, B. author Kisielnicka, H. 1976-06-30 1976-06-30 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 1 143 159 1976 10.3750/AIP1976.06.1.09 https://aiep.pensoft.net/article/24847/ https://aiep.pensoft.net/article/24847/download/pdf/ The paper presents and analyses the catches of salmon and trout in the Szczecin Firth and lower Odra River as well as in the rivers Warta and Noteć over the period of 1952-1972. The both species had to be treated jointly because such is the case with information given by the economic statistics available to the authors. A year-to year, between-season and between-region variabilities were considered. Fish caught by the German (GDR) fishermen were also taken into account. Additionally, the post-war data concerning the lower Odra stocking with salmon and trout are collected. text/html en_US Pensoft Publishers Salmon (Salmo salar L.) and trout (Salmo trutta L.) fishing and stocking in the lower Odra River system Research Article

10.3750/AIP1976.06.2.01 1976-12-31 aiep

author Winnicki, A. author Tomasik, L. 1976-12-31 1976-12-31 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 3 8 1976 10.3750/AIP1976.06.2.01 https://aiep.pensoft.net/article/24848/ https://aiep.pensoft.net/article/24848/download/pdf/ A volume of trout (Salmo trutta L.) spermatozoa relative a sperm volume unit (“spermatocrit”) was studied by means of a microhematocrit centrifuge. It was found out that the method allowed density differences between sperm of various individuals to be assessed quickly and precisely; an amount of water absorbed by spermatozoa during their activation can be measured by this method as well. text/html en_US Pensoft Publishers “Spermatocrit” as a method for biological evaluation of fish sperm Research Article

10.3750/AIP1976.06.2.02 1976-12-31 aiep

author Jurkowski, M.K. 1976-12-31 1976-12-31 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 9 15 1976 10.3750/AIP1976.06.2.02 https://aiep.pensoft.net/article/24849/ https://aiep.pensoft.net/article/24849/download/pdf/ The composition of fatty acids was determined in eggs of pike inhabiting some inland lakes and the Baltic′s Puck Bay. The acid percentage composition was found to vary in each lipid series. Additionally, considerable differences were revealed in quantities of the C-24 : 0; C-24 : 1, and C-24 : 2 acids present. In brackish water pike eggs, no amount of the following acids was detected: C-20 : 1, C-23 : 1, and C-23 : 2 in phospholipids, C-18 : 0 in cholesterol esters, C-16 : 4 in triglycerides. The acids listed above are present, although in very small quantities, in eggs of pike from inland waters. text/html en_US Pensoft Publishers The fatty acids composition in egg lipids of pike, Esox lucius L. from the Puck Bay and lakes near Lipusz Research Article

10.3750/AIP1976.06.2.03 1976-12-31 aiep

author Podeszewski, Z. author Zarzycki, B. 1976-12-31 1976-12-31 1976 Acta Ichthyologica et Piscatoria 1734-1515 0137-1592 6 17 37 1976 10.3750/AIP1976.06.2.03 https://aiep.pensoft.net/article/24850/ https://aiep.pensoft.net/article/24850/download/pdf/ The studies were aimed at checking the possibility of applying the drip to fish species′ identification from their sarcoplasmatic protein fraction determined by the starch gel electrophoresis. 5 Baltic and 24 freshwater fish species were examined. The studies proved an excellent applicability of the method to the biochemical identification of fish. The results obtained are presented on photographs and drawings. text/html en_US Pensoft Publishers Application of drip to fish sarcoplasmatic protein characteristics by starch gel electrophoresis Research Article cGFnZT0xJnNldD1haWVwJmZyb209JnVudGlsPSZtZXRhZGF0YV9wcmVmaXg9bW9kcw==