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Migration patterns and habitat use of the tapertail anchovy Coilia mystus in the Oujiang River Estuary and the Zhujiang River Estuary, China

文献类型： 外文期刊

作者： Jiang, Tao 1 ; Liu, Hongbo 1 ; Huang, Honghui 2 ; Yang, Jian 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Fishery Ecol Environm Assessment & Res Co, Wuxi 214081, Jiangsu, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fishery Res Inst, Guangzhou 510300, Guangdong, Peoples R China

关键词： Coilia mystus; Oujiang River Estuary; Zhujiang (Pearl) River Estuary; habitat use; otolith microchemistry

期刊名称：ACTA OCEANOLOGICA SINICA （ 影响因子：1.431； 五年影响因子：1.445 ）

ISSN： 0253-505X

年卷期： 2019 年 38 卷 8 期

页码：

收录情况： SCI

摘要： Habitat use of the tapertail anchovy (Coilia mystus Linnaeus, 1758) from the Oujiang River Estuary and the Zhujiang (Pearl) River Estuary was studied by examining the environmental signatures of Sr and Ca in otoliths using electron probe microanalysis. Individuals from the Oujiang River had higher and varied Sr:Ca ratios (expressed as (Sr:Ca)x1 000, 3.83-13.0 average) in the otolith core regions, suggesting that they were born in brackish or sea waters, and that a freshwater habitat might not be necessary for egg hatching and larval growth. While, individuals from the Zhujiang River had lower Sr:Ca ratios (0.39-2.51 average) in the core regions, suggesting a freshwater origin. After hatching, anchovies from the Zhujiang River migrate downstream to the river estuary close to brackish water. Our results demonstrated varied habitat use for spawning during stages of early life history between the two populations, and suggested that such variations are promoting diversity of life history strategies of this species.

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