Population genetic structure of the intertidal kinorhynch Echinoderes marthae (Kinorhyncha; Cyclorhagida; Echinoderidae) across the São Sebastião Channel, Brazil

IF 0.5 4区生物学 Q3 Agricultural and Biological Sciences

Proceedings of the Biological Society of Washington Pub Date : 2018-01-15 DOI:10.2988/17-00005

P. V. Randsø, M. Domenico, M. Herranz, E. Lorenzen, M. Sørensen

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引用次数: 6

Abstract

Abstract Barriers to gene flow in marine environments vary between species and are highly dependent on dispersal ability and habitat discontinuity. Intertidal sand and mud flats are discontinuous areas, separated by other habitat types along a coastline or by subtidal zones. The São Sebastião Channel in eastern Brazil, which is situated between Rio de Janeiro and São Paulo, harbors two intertidal mud flats where populations of the kinorhynch Echinoderes marthae are found, one on the mainland (Araçá Bay) and one on São Sebastião Island (Ilhabela). Here, we investigated the genetic structure of two E. marthae populations across the São Sebastião Channel, in order to contribute to the ongoing debate on biogeography of meiobenthic animals. Based on 628 bp of the mitochondrial CO1 gene, we find that E. marthae shows low levels of structure in the São Sebastião Channel (FST = 0.165), and find evidence of recent demographic expansion across populations.

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潮间带赤腹鹬种群遗传结构的研究Cyclorhagida;棘足动物科)横跨塞巴斯蒂亚海峡，巴西

摘要海洋环境中基因流动的障碍因物种而异，并且高度依赖于扩散能力和栖息地的不连续性。潮间沙和泥滩是不连续的区域，沿海岸线或潮下带被其他栖息地类型隔开。巴西东部的São Sebastião海峡位于里约热内卢和圣保罗之间，有两个潮间带泥滩，其中一个在大陆（AraçáBay），另一个在São-Sebastiáo岛（Ilhabela）。在这里，我们调查了São Sebastião海峡的两个E.martae种群的遗传结构，以便为正在进行的关于美生物地理学的辩论做出贡献。基于线粒体CO1基因的628 bp，我们发现E.marthae在São Sebastião通道中显示出低水平的结构（FST=0.165），并发现了最近种群间人口扩张的证据。

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来源期刊

Proceedings of the Biological Society of Washington 生物-生物学

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0.00%

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审稿时长

>12 weeks

期刊介绍： The official publication of the Biological Society of Washington, the Proceedings of the Biological Society of Washington is an international journal containing peer-reviewed papers that broadly bear on systematics in the biological sciences (botany and zoology), paleontology, and notices of business transacted at Society meetings.