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Phylogeography of the mud crab (Scylla serrata) in the Indo-West Pacific reappraised from mitochondrial molecular and oceanographic clues: transoceanic dispersal and coastal sequential colonization

文献类型: 外文期刊

作者: He, Lijun 1 ; Zhang, Aibing 2 ; Zhu, Chaodong 3 ; Weese, David 4 ; Qiao, Zhenguo 1 ;

作者机构: 1.Chinese Acad Fishery Sci, E China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

2.Capital Normal Univ, Coll Life Sci, Beijing, Peoples R China

3.Chinese Acad Sci, Inst Zool, Beijing, Peoples R China

4.Auburn Univ, Dept Biol Sci, Auburn, AL 36849 USA

关键词: coalescent simulation;colonization history;cytochrome oxidase i;indo-west pacific;paleo-oceanic circulations;scy//a serrata.

期刊名称:MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE ( 影响因子:1.693; 五年影响因子:1.899 )

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收录情况: SCI

摘要: The widespread mud crab, Scylla serrata, of the Indo-West Pacific is an excellent model species to demonstrate how the colonization history of a species can be influenced by complex oceanographic conditions. Through the combination of ecological data (fossil records and paleo-oceanographic conditions) and molecular data (coalescent simulations, network analysis, and nucleotide diversity tests), the phylogeographic history of S. serrata was re-analyzed. Based on the analysis of mtDNA cytochrome oxidase I sequences, two major clades were identifìed for S. serrata, including a widespread clade (Clade I) with three disjunct geographic clusters (IA, IB and IC) and an endemic Northwest Australian clade (Clade II). Moreover, a signifìcant phylogeographic structure corresponding to four subpopulations was revealed: Northwest Australia, West Indian Ocean, Red Sea-South China Sea and West Pacific. A colonization history of a Northwest Australia origin for S. serrata followed by westward transmarine dispersal across the Indian Ocean for Clade I and sequential colonization from the West Indian Ocean to Red Sea-South China Sea and West Pacific was corroborated. The Pleistocene fluctuations of paleo-oceanographic conditions including surface circulations and physical topography in the Indo-West Pacific might be responsible for the wide distribution, colonization history and genetic divergence of this species.

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