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Seasonal distribution of the early life stages of the small yellow croaker (Larimichthys polyactis) and its dynamic controls adjacent to the Changjiang River Estuary

文献类型： 外文期刊

作者： Xu, Min 1 ; Wang, Yihe 3 ; Liu, Zunlei 1 ; Liu, Yong 1 ; Zhang, Yi 1 ; Yang, Linlin 1 ; Wang, Fei 1 ; Wu, Hui 3 ; Cheng, Jiahua 1 ;

作者机构： 1.Minist Agr, Key Lab East China Sea & Ocean Fishery Resources E, Shanghai, Peoples R China

2.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China

3.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai, Peoples R China

4.East China Normal Univ, Sch Marine Sci, Shanghai, Peoples R China

5.300 Jungong Rd, Shanghai 200090, Peoples R China

关键词： Changjiang River Estuary; dynamic controls; ichthyoplankton; Larimichthys polyactis; migration route; spatiotemporal distribution

期刊名称：FISHERIES OCEANOGRAPHY （ 影响因子：2.6； 五年影响因子：2.7 ）

ISSN： 1054-6006

年卷期： 2023 年 32 卷 4 期

页码：

收录情况： SCI

摘要： The distribution of the early life stages of Larimichthys polyactis indicates the availability of suitable spawning and nursing grounds and enables a better understanding of the distribution of its geographic subpopulations and isolation. Large-scale quantitative ichthyoplankton surveys of L. polyactis were performed from March to July 2018, and a numerical hydrodynamic model was applied to explore the spatiotemporal distribution and habitats of L. polyactis early life stages adjacent to the Changjiang River Estuary. Two distinct early life stage distribution patterns were found. One occurred during March and April in the deep waters seaward of the Changjiang River bottom plume front, to the east and southeast of the Changjiang River Estuary. The other occurred in May and June throughout the entire water column in coastal waters to the east and north of the Changjiang River Estuary. Rising seasonal temperatures, and the local dynamic processes such as the Changjiang River plume, determined the transitions between the two distribution patterns. A potential fish larval migration route from the southern deep shelf waters to the northern coastal waters within the motor-trawl prohibition line was suggested. This study contributes to our understanding of the mixture of habitats used by the two L. polyactis subpopulations in the southern Yellow Sea and the East China Sea.

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