Growth and feeding ecology of juvenile Chinese sturgeon, Acipenser sinensis, in the Yangtze Estuary

文献类型： 外文期刊

第一作者： Sun, Liting

作者： Sun, Liting;Zhao, Feng;Wang, Sikai;Wang, Yu;Yang, Gang;Zhuang, Ping;Sun, Liting

作者机构：

期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）

ISSN： 0175-8659

年卷期： 2019 年 35 卷 1 期

页码：

收录情况： SCI

摘要： The present study was conducted to assess growth and the feeding ecology with prey preferences of juvenile Acipenser sinensis individuals in the Yangtze Estuary from May to August, 2015. From May to August, juveniles grew from 11.65 +/- 2.10 cm (10.82 +/- 6.32 g) to 27.78 +/- 3.36 cm (158.08 +/- 60.50 g), and the length-weight relationship (b = 3.1124) indicated isometric growth. The stomach content analysis indicated the following order of dominance of prey groups: fish, crab, amphipoda, polychaeta, shrimp and other small benthic invertebrates. The main diet taxon has not changed dramatically compared with samples in 2004. Moreover, this study confirmed that changes occurred in the prey composition, which was different with the growth of length size in the Yangtze Estuary. Therefore maintaining species richness in the Yangtze Estuary and ensuring sufficient food source is crucial to species conservation of A. sinensis.

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