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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Genetic population structure in Nacella magellanica: Evidence of rapid range expansion throughout the entire species distribution on the Atlantic coast
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Genetic population structure in Nacella magellanica: Evidence of rapid range expansion throughout the entire species distribution on the Atlantic coast

机译：墨西哥果蝇的遗传种群结构：大西洋沿岸整个物种分布范围迅速扩大的证据

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摘要

Nacella magellanica, the most abundant limpet in the Magellanic biogeographic Province of Argentina and Chile, is characterized by a noticeable variability in shell morphology and color patterns. Ecological as well as evolutionary features make this limpet an interesting species for evolutionary and population genetic studies. Here, arbitrary nuclear molecular markers, inter-simple sequence repeat-PCR, are used to analyze the population genetic structure in 14 localities of N. magellanica along 2900 km on the Atlantic coast of the Magellanic Province. We compare the present results, based on nuclear markers, with previous findings of a phylogeographic study that used the mitochondrial COI gene. All the results presented here suggest little genetic structure within N. magellanica, with moderate to high genetic connectivity among populations. The short time elapsed since the expansion of this species plus a possible long larval lifespan and the oceanographic and environmental conditions of the Magellanic Province might explain the lack of genetic structuring and the low levels of genetic differentiation in the species throughout its distribution range along the Argentine coast.
机译：阿根廷的麦哲伦生物地理省中最丰富的羽扇豆（Nacella magellanica）的特征是壳形态和颜色模式明显不同。生态和进化特征使这种帽贝成为进化和种群遗传研究的有趣物种。在这里，任意的核分子标记，简单序列间重复PCR，被用来分析麦哲伦省大西洋沿岸2900 km处的N. magellanica 14个地方的种群遗传结构。我们将基于核标记物的当前结果与使用线粒体COI基因的植物学研究的先前发现进行比较。这里介绍的所有结果表明，黑麦草内的遗传结构很少，种群之间的遗传连通性中等到很高。自该物种扩展以来已经过去了很短的时间，加上可能的长幼体寿命，麦哲伦省的海洋学和环境条件可能解释了该物种在整个阿根廷分布范围内缺乏遗传结构和遗传分化水平低海岸。

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