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Integrating Anisakis spp. parasites data and host genetic structure in the frame of a holistic approach for stock identification of selected Mediterranean Sea fish species

机译：集成Anisakis spp。整体方法确定选定地中海鱼类物种的寄生虫数据和宿主遗传结构

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摘要

The unique environment of the Mediterranean Sea makes fish stock assessment a major challenge. Stock identification of Mediterranean fisheries has been based mostly from data on biology, morphometrics, artificial tags, otolith shape and fish genetics, with less effort on the use of parasites as biomarkers. Here we use some case studies comparing Mediterranean vs Atlantic fish stocks in a multidisciplinary framework. The generalized Procrustes Rotation (PR) was used to assess the association between host genetics and larval Anisakis spp. datasets on demersal (hake) and pelagic (horse mackerel, swordfish) species. When discordant results emerged, they were due to the different features of the data. While fish population genetics can detect changes over an evolutionary timescale, providing indications on the cohesive action of gene flow, parasites are more suitable biomarkers when considering fish stocks over smaller temporal and spatial scales, hence giving information of fish movements over their lifespan. Future studies on the phylogeographic analysis of parasites suitable as biomarkers, and that of their fish host, performed on the same genes, will represent a further tool to be included in multidisciplinary studies on fish stock structure.
机译：地中海独特的环境使鱼类资源评估成为一项重大挑战。地中海渔业的种群识别主要基于生物学，形态计量学，人工标签，耳石形状和鱼类遗传学方面的数据，而很少使用寄生虫作为生物标志物。在这里，我们使用一些案例研究，在多学科框架下比较地中海和大西洋鱼类种群。广义Procrustes Rotation（PR）用于评估宿主遗传学与幼体Anisakis spp之间的关联。水下（鳕鱼）和远洋（鲭鱼，箭鱼）物种的数据集。当出现不一致的结果时，它们是由于数据的不同特征所致。尽管鱼类种群遗传学可以检测到进化时间范围内的变化，从而为基因流动的内聚作用提供了指示，但是当考虑较小时空尺度上的鱼类种群时，寄生虫是更合适的生物标志物，因此可以提供整个生命周期内鱼类运动的信息。对适合作为生物标记的寄生虫及其鱼类宿主进行系统地理学分析的未来研究，将在相同的基因上进行，这将成为进一步纳入鱼类种群结构多学科研究的工具。

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