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Oceanic circulation models help to predict global biogeography of pelagic yellow-bellied sea snake

机译:海洋环流模型有助于预测远洋黄腹海蛇的全球生物地理

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摘要

It is well recognized that most marine vertebrates, and especially tetrapods, precisely orient and actively move in apparently homogeneous oceanic environments. Here, we investigate the presumptive role of oceanic currents in biogeographic patterns observed in a secondarily marine tetrapod, the yellow-bellied sea snake (Hydrophis [Pelamis] platurus). State-of-the-art world ocean circulation models show how H. platurus, the only pelagic species of sea snake, can potentially exploit oceanic currents to disperse and maintain population mixing between localities that spread over two-thirds of the Earth's circumference. The very close association of these snakes with surface currents seems to provide a highly efficient dispersal mechanism that allowed this species to range extensively and relatively quickly well beyond the central Indo-Pacific area, the centre of origin, abundance and diversity of sea snakes. Our results further suggest that the pan-oceanic population of this species must be extraordinarily large.
机译:众所周知,大多数海洋脊椎动物,尤其是四足动物,都在明显均质的海洋环境中精确定向并活动。在这里,我们研究了洋流在次生海洋四足动物黄腹海蛇(Hydrophis [Pelamis] platurus)中观察到的生物地理模式中的推定作用。世界上最先进的海洋环流模型表明,海蛇是唯一的远洋物种H. platurus如何潜在地利用洋流来分散并维持分布在地球周长三分之二的地区之间的人口混合。这些蛇与地表流的密切联系似乎提供了一种高效的扩散机制,使该物种能够广泛而相对迅速地分布在印度洋-太平洋中部地区,海蛇的起源中心,丰富度和多样性之外。我们的结果进一步表明,该物种的泛洋种群必须非常大。

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