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Population structure and genome-wide evolutionary signatures reveal putative climate-driven habitat change and local adaptation in the large yellow croaker

文献类型： 外文期刊

作者： Chen, Baohua 1 ; Bai, Yulin 1 ; Wang, Jiaying 1 ; Ke, Qiaozhen 1 ; Zhou, Zhixiong 1 ; Zhou, Tao 1 ; Pan, Ying 1 ; Wu, Renxie 5 ; Wu, Xiongfei 6 ; Zheng, Weiqiang 2 ; Xu, Peng 1 ;

作者机构： 1.Xiamen Univ, Coll Ocean & Earth Sci, Fujian Key Lab Genet & Breeding Marine Organisms, Xiamen 361102, Peoples R China

2.Ningde Fufa Fisheries Co Ltd, Natl Key Lab Mariculture Breeding, Ningde 352000, Peoples R China

3.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China

4.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350000, Peoples R China

5.Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China

6.Ningbo Acad Oceanol & Fishery, Ningbo 315012, Peoples R China

关键词： Climate adaptation; Habitat change; Large yellow croaker; Phylogeographic structure

期刊名称：MARINE LIFE SCIENCE & TECHNOLOGY （ 影响因子：5.7； 五年影响因子：5.8 ）

ISSN： 2096-6490

年卷期： 2023 年 5 卷 2 期

页码：

收录情况： SCI

摘要： The large yellow croaker (Larimichthyscrocea) is one of the most economically valuable marine fish in China and is a notable species in ecological studies owing to a serious collapse of wild germplasm in the past few decades. The stock division and species distribution, which have important implications for ecological protection, germplasm recovery, and fishery resource management, have been debated since the 1960s. However, it is still uncertain even how many stocks exist in this species. To address this, we evaluated the fine-scale genetic structure of large yellow croaker populations distributed along the eastern and southern Chinese coastline based on 7.64 million SNP markers. Compared with the widely accepted stock boundaries proposed in the 1960s, our results revealed that a climate-driven habitat change probably occurred between the Naozhou (Nanhai) Stock and the Ming-Yuedong (Mindong) Stock. The boundary between these two stocks might have shifted northwards from the Pearl River Estuary to the northern area of the Taiwan Strait, accompanied by highly asymmetric introgression. In addition, we found divergent landscapes of natural selection between the stocks inhabiting northern and southern areas. The northern population exhibited highly agminated signatures of strong natural selection in genes related to developmental processes, whereas moderate and interspersed selective signatures were detected in many immune-related genes in the southern populations. These findings establish the stock status and genome-wide evolutionary landscapes of large yellow croaker, providing a basis for conservation, fisheries management and further evolutionary biology studies.

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