群岛
底栖区
浮游生物
生物
人口
生态学
海胆
基因流
无脊椎动物
海洋学
幼虫
蕨类植物
地理
地质学
遗传变异
基因
社会学
人口学
生物化学
作者
David Véliz,Noemí Rojas‐Hernández,Pablo Fibla,Boris Dewitte,Sebastián Cornejo‐Guzmán,Carolina Parada
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2021-11-04
卷期号:16 (11): e0259595-e0259595
被引量:5
标识
DOI:10.1371/journal.pone.0259595
摘要
Most benthic marine invertebrates with sedentary benthic adult phases have planktonic larvae that permit connectivity between geographically isolated populations. Planktonic larval duration and oceanographic processes are vital to connecting populations of species inhabiting remote and distant islands. In the present study, we analyzed the population genetic structure of the sea urchin Centrostephanus sylviae, which inhabits only the Juan Fernández Archipelago and the Desventuradas islands, separated by more than 800 km. For 92 individuals collected from Robinson Crusoe and Selkirk Islands (Juan Fernández Archipelago) and San Ambrosio Island (Desventuradas Islands), 7,067 single nucleotide polymorphisms (SNPs) were obtained. The results did not show a spatial genetic structure for C. sylviae; relative high migration rates were revealed between the islands. An analysis of the water circulation pattern in the area described a predominant northward water flow with periods of inverted flow, suggesting that larvae could move in both directions. Overall, this evidence suggests that C. sylviae comprises a single large population composed of individuals separated by more than 800 km.
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