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A. Witkowski
12 articles by this author
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Research Article
The non-indigenous freshwater fishes of Poland: Threats for native ichthyofauna and consequence for fishery: A review
A. Witkowski, J. Grabowska
10.3750/AIP2011.42.2.01
 30-06-2012
 Unique: 295 | Total: 368  | Access Period:
 77-87
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Research Article
A record of pink salmon, Oncorhynchus gorbuscha (Actinopterygii, Salmoniformes, Salmonidae), in the Revelva River, Hornsund area (SW Spitsbergen)
A. Witkowski, P. Głowacki
10.3750/AIP2010.40.1.14
 30-06-2010
 Unique: 185 | Total: 224  | Access Period:
 87-89
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Research Article
Histological structure of the skin of Arctic charr, Salvelinus alpinus (L.) from Spitsbergen
A. Witkowski, K. Kaleta, J. Kuryszko, J. Kusznierz
10.3750/AIP2004.34.2.11
 31-12-2004
 Unique: 215 | Total: 273  | Access Period:
 241-251
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Research Article
Morphometrics of Pseudorasbora parva (Schlegel, 1842) (Cyprinidae: Gobioninae), a species introduced into the Polish waters
J. Kotusz, A. Witkowski
10.3750/AIP1998.28.2.01
 31-12-1998
 Unique: 171 | Total: 227  | Access Period:
 3-14
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Research Article
Morphometrics of the autumn and spring run populations of the river lamprey, Lampetra fluviatilis (Linnaeus,1758) from the Polish rivers
J. Kuszewski, A. Witkowski
10.3750/AIP1995.25.1.05
 30-06-1995
 Unique: 177 | Total: 225  | Access Period:
 57-70
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Research Article
Characteristics of the population of Lampetra fluviatilis (L.) entering the Drwęca and Grabowa rivers (North Poland)
A. Witkowski, J. Kuszewski
10.3750/AIP1995.25.1.04
 30-06-1995
 Unique: 187 | Total: 219  | Access Period:
 49-56
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Research Article
Changes of gonadosomatic index (GSI) and egg diameter in the grayling Thymallus thymallus (L.) in annual cycle
A. Witkowski, J. Błachuta, B. Kokurewicz, M. Kowalewski
10.3750/AIP1989.19.2.02
 31-12-1989
 Unique: 242 | Total: 321  | Access Period:
 21-28
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Research Article
Age and growth-rate of grayling Thymallus thymallus (L.) in the rivers of Pomerania (NW Poland)
A. Witkowski, J. Błachuta, J. Olesińska
10.3750/AIP1989.19.2.01
 31-12-1989
 Unique: 175 | Total: 209  | Access Period:
 3-19
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Research Article
The spawning run of the huchen Hucho hucho (L.) and its analysis
A. Witkowski
10.3750/AIP1988.18.2.03
 31-12-1988
 Unique: 199 | Total: 247  | Access Period:
 23-31
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Research Article
Carotenoids in fish. XXXVIII. Carotenoid contents in Hucho hucho (L.) individuals
B. Czeczuga, A. Witkowski, M. Kowalewski
10.3750/AIP1985.16.1.06
 30-06-1986
 Unique: 148 | Total: 190  | Access Period:
 61-72
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Research Article
Carotenoids in fish - XXXIX. Presence of salmoxanthin in Thymallus thymallus (L.) specimens
B. Czeczuga, A. Witkowski, M. Kowalewski
10.3750/AIP1985.15.1.04
 30-06-1985
 Unique: 184 | Total: 229  | Access Period:
 73-81
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Research Article
Morphological variability in lake and river populations of Cottus poecilopus Heckel, 1836 (Pisces: Cottidae)
A. Witkowski
10.3750/AIP1984.14.1-2.03
 31-12-1984
 Unique: 143 | Total: 180  | Access Period:
 43-57
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