Asymmetric genetic exchange in the brown seaweed Sargassum fusiforme (Phaeophyceae) driven by oceanic currents

doi:10.1007/s00227-013-2192-x

IOCAS-IR > 实验海洋生物学重点实验室

	Asymmetric genetic exchange in the brown seaweed Sargassum fusiforme (Phaeophyceae) driven by oceanic currents
	Hu, Zi-Min 1,2; Zhang, Jie1,3 ; Lopez-Bautista, Juan 2; Duan, De-Lin 1; Hu, ZM
	2013-06-01
发表期刊	MARINE BIOLOGY
ISSN	0025-3162
卷号	160 期号:6 页码:1407-1414
文章类型	Article
摘要	Geological phenomena (e.g. drastic sea level fluctuations during the Quaternary Ice Age in the Northern Hemisphere) have been demonstrated to intensively affect the biogeographic patterns and tempo-spatial compositions of genetic diversity of marine organisms. However, it is poorly understood whether contemporary factors such as oceanic surface currents have also shaped inter-regional population genetics of specific coastal marine flora, with or without limited dispersal capability. In this study, we determined mtDNA Cox1 gene sequences of the brown seaweed Sargassum fusiforme from nine populations along the Chinese coast and one population from the west coast of South Korea, in an effort to understand what factors are contributing to their current genetic structure and geographic distribution patterns. Genetic analyses indicated a deep genetic break between the Yellow-Bohai Sea (YBS) and the other two marginal seas, the East China Sea (ECS) and the South China Sea (SCS). In particular, the amount of genetic exchange from the SCS to each of the ECS and YBS was significantly higher than that from the opposite directions. Our analyses supports the hypothesis that biogeographic patterns of genetic variation in S. fusiforme are probably an interactive consequence of post-glacial colonization from two scattered refugia driven by the offshore Kuroshio Current and asymmetric gene flow among adjacent sea margins.; Geological phenomena (e.g. drastic sea level fluctuations during the Quaternary Ice Age in the Northern Hemisphere) have been demonstrated to intensively affect the biogeographic patterns and tempo-spatial compositions of genetic diversity of marine organisms. However, it is poorly understood whether contemporary factors such as oceanic surface currents have also shaped inter-regional population genetics of specific coastal marine flora, with or without limited dispersal capability. In this study, we determined mtDNA Cox1 gene sequences of the brown seaweed Sargassum fusiforme from nine populations along the Chinese coast and one population from the west coast of South Korea, in an effort to understand what factors are contributing to their current genetic structure and geographic distribution patterns. Genetic analyses indicated a deep genetic break between the Yellow-Bohai Sea (YBS) and the other two marginal seas, the East China Sea (ECS) and the South China Sea (SCS). In particular, the amount of genetic exchange from the SCS to each of the ECS and YBS was significantly higher than that from the opposite directions. Our analyses supports the hypothesis that biogeographic patterns of genetic variation in S. fusiforme are probably an interactive consequence of post-glacial colonization from two scattered refugia driven by the offshore Kuroshio Current and asymmetric gene flow among adjacent sea margins.
学科领域	Marine & Freshwater Biology
DOI	10.1007/s00227-013-2192-x
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:000319360100010
WOS关键词	NORTHWESTERN PACIFIC ; HEMIPHYLLUM PHAEOPHYCEAE ; MAXIMUM-LIKELIHOOD ; SEA LEVELS ; RED ALGAE ; PHYLOGEOGRAPHY ; POPULATIONS ; DISTANCE ; MARKERS ; JAPAN
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16532
专题	实验海洋生物学重点实验室
通讯作者	Hu, ZM
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Hu, Zi-Min,Zhang, Jie,Lopez-Bautista, Juan,et al. Asymmetric genetic exchange in the brown seaweed Sargassum fusiforme (Phaeophyceae) driven by oceanic currents[J]. MARINE BIOLOGY,2013,160(6):1407-1414.
APA	Hu, Zi-Min,Zhang, Jie,Lopez-Bautista, Juan,Duan, De-Lin,&Hu, ZM.(2013).Asymmetric genetic exchange in the brown seaweed Sargassum fusiforme (Phaeophyceae) driven by oceanic currents.MARINE BIOLOGY,160(6),1407-1414.
MLA	Hu, Zi-Min,et al."Asymmetric genetic exchange in the brown seaweed Sargassum fusiforme (Phaeophyceae) driven by oceanic currents".MARINE BIOLOGY 160.6(2013):1407-1414.

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