Feeding of juvenile sterlet (<Emphasis Type="Italic">Acipenser ruthenus</Emphasis>, Acipenseridae) in the Danube River midstream |
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Authors: | A P Strel’nikova |
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Institution: | 1.Papanin Institute of the Biology of Inland Waters,Russian Academy of Sciences,Borok, Yaroslavl oblast,Russia |
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Abstract: | The present paper provides the results of the study on feeding of juvenile (underyearlings and age 2+) sterlet (Acipenser ruthenus) caught in the Danube River in 2002–2003. The full spectrum of food items found in the fish stomachs was identified. The
seasonal patterns of food composition are revealed. It is shown that juvenile sterlet in the Danube feeds mainly on larvae
of chironomids and trichopterans, amphipods, and leeches. The organisms typical for lithophilic and lithorheophilic biocenoses
play considerable role in the feeding of sterlet. Mean daily gains of body length and weight in the sterlet underyearlings
are calculated. |
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Keywords: | |
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