Feeding of juvenile sterlet (Acipenser ruthenus, Acipenseridae) in the Danube River midstream

被引：0
|
作者：
A. P. Strel’nikova
机构：
[1] Russian Academy of Sciences,Papanin Institute of the Biology of Inland Waters
来源：
Journal of Ichthyology | 2012年 / 52卷 / 1期
关键词：
feeding in sterlet; seasonal dynamics of feeding; fullness index; frequency of occurrence; growth;
D O I：
10.1134/S0032945212010110
中图分类号：
学科分类号：
摘要：
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.
引用
收藏
页码：85 / 90
页数：5
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