Acta Ichthyologica et Piscatoria 17(2): 55-68, doi: 10.3750/AIP1987.17.2.05
Diet composition and daily feeding patterns of Rutilus rutilus (L.) in Włocławek Dam Reservoir in 1982-1984
expand article infoA. Szczyglińska

Corresponding author: A. Szczyglińska

© A. Szczyglińska.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Szczyglińska A (1987) Diet composition and daily feeding patterns of Rutilus rutilus (L.) in Włocławek Dam Reservoir in 1982-1984. Acta Ichthyologica et Piscatoria 17(2): 55-68. https://doi.org/10.3750/AIP1987.17.2.05
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Abstract
The work gives both; a qualitative composition of the trout′s feed for various body length classes and relations between feeding intensity and exposure to light within the twenty-four hours. Surveys were conducted on 1035 individuals caught between 1982 and 1984 within the Włocławski Reservoir. A composition of the trout′s feed, typical, in general, for particular body length classes, was lacking in macrophytes, with a small amount of Dreissena being replaced by the molluscs from Pisidium genus. A clear twenty-four hours feeding rhythm, with brake during the night, was noted. The thesis on the relation between the feeding intensity and water temperature has been confirmed.