Substrate color preference and feeding by juvenile Chinese sturgeon Acipenser sinensis: exploration of a behavioral adaptation

文献类型： 外文期刊

第一作者： Gu, Xiaolian

作者： Gu, Xiaolian;Gu, Xiaolian;Zhuang, Ping;Zhao, Feng;Huang, Xiaorong;Feng, Guangpeng;Zhang, Tao;Liu, Jianyi;Zhang, Longzhen;Shi, Xiaotao;Kynard, Boyd;Kynard, Boyd

作者机构：

关键词： Acipenseridae; Habitat; Feeding; Behavior

期刊名称：ENVIRONMENTAL BIOLOGY OF FISHES （ 影响因子：1.844； 五年影响因子：1.839 ）

ISSN： 0378-1909

年卷期： 2017 年 100 卷 1 期

页码：

收录情况： SCI

摘要： Experiments were conducted in artificial stream tanks with juvenile Chinese sturgeon, Acipenser sinensis, captured in the Yangtze Estuary to test two null hypotheses (1) juveniles have no preference for white or black substrates, and (2) white or black substrate color has no effect on juvenile feeding efficiency on the barcheek goby, Rhinogobius giurinus, a dark-colored prey of wild juveniles. Juveniles strongly preferred white substrate. However, in feeding tests, feeding efficiency by juveniles was similar on white or black substrates. Thus, substrate color had no effect on feeding efficiency. Results suggest the innate preference for white substrate is not a visual adaptation for capturing prey on a contrasting background, but is an adaptation predisposing juveniles to seek light-colored sandy substrate where forage abundance is greatest.

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