Distribution of the early life stages of small yellow croaker in the Yangtze River estuary and adjacent waters

文献类型： 外文期刊

第一作者： Lin, Nan

作者： Lin, Nan;Chen, Yuange;Jin, Yan;Yuan, Xingwei;Ling, Jianzhong;Jiang, Yazhou

作者机构：

关键词： Larimichthys polyactis; Spawning ground; Nursery ground; Environmental conditions; Yangtze River estuary

期刊名称：FISHERIES SCIENCE （ 影响因子：1.617； 五年影响因子：1.531 ）

ISSN： 0919-9268

年卷期： 2018 年 84 卷 2 期

页码：

收录情况： SCI

摘要： The horizontal distribution of the early life stages of small yellow croaker Larimichthys polyactis in the Yangtze River estuary and its adjacent area was investigated through six ichthyoplankton surveys conducted during the period of mid-April to mid-July 2015. A total of seven eggs and 2461 larvae and juveniles of small yellow croaker were collected. Abundance of the specimens was highest in mid-May and lowest in mid-July. The composition of the different development stages of small yellow croaker varied among the six cruises, although post-flexion larvae and juveniles dominated the ichthyoplankton collection in each cruise. Specimens at different development stages showed different distribution patterns in the study area. The eggs, yolk-sac and pre-flexion larvae were mainly collected at stations with depth exceeding 30 m, while post-flexion larvae and juveniles were mainly distributed in the relatively shallow waters near to the mouth of the Yangtze River. In conclusion, the study suggested that the study area had largely lost the ecological function to support small yellow croaker spawning, although it could still serve as nursery ground for the species.

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