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首页> 外文期刊>ICES Journal of Marine Science >Genetic analysis of goldsinny wrasse reveals evolutionary insights into population connectivity and potential evidence of inadvertent translocation via aquaculture
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Genetic analysis of goldsinny wrasse reveals evolutionary insights into population connectivity and potential evidence of inadvertent translocation via aquaculture

机译：Goldsinny濑鱼的遗传分析揭示了对种群连通性的进化见解以及通过水产养殖无意转移的潜在证据

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The salmon industry is heavily dependent on wrasse for delousing infected fish. The goldsinny wrasse is numerically the most important, and each year, millions are harvested from the wild and transported large distances into fish farms. Population genetic knowledge is required to sustainably exploit this species. Here, 1051 goldsinny wrasses from 16 locations across Scandinavia, the British Isles, and Spain were genotyped with 14 microsatellite and 36 SNP markers. Within-population genetic diversity decreased towards north, and a genetic break was observed across the North Sea. Samples from Northern Norway differed from rest of the Scandinavian samples, and samples from the British Isles differed from the Spanish ones. Within Scandinavia, isolation-by-distance was detected. Observed genetic patterns fitted well with expectations derived from oceanographic drift simulations. A sample from mid-Norway deviated from these patterns however, and was genetically very similar to southern Scandinavian samples. We conclude that the population structure of this species is primarily determined by the opposing evolutionary forces of passive drift, limited adult migration and spawning-site fidelity, whereas the deviation in isolation-by-distance observed in mid-Norway is potentially caused by inadvertent translocations of wrasse from southern Scandinavia via current aquaculture practise. Inclusion of outlier loci gave greater resolution, suggesting that diversifying selection may also affect population structuring among goldsinny wrasses.
机译：鲑鱼业严重依赖濑鱼来杀死受感染的鱼。数字上最重要的是金枪鱼濑鱼，每年都有数百万人从野外收获，然后远距离运输到养鱼场。需要种群遗传学知识才能可持续地开发该物种。在这里，使用14个微卫星和36个SNP标记对来自斯堪的纳维亚半岛，不列颠群岛和西班牙16个地点的1051枚金丝鱼进行了基因分型。人口内部的遗传多样性向北减少，在北海发现了遗传断裂。挪威北部的样本与其余的斯堪的纳维亚样本不同，英属三岛的样本也与西班牙不同。在斯堪的纳维亚半岛，检测到距离隔离。观测到的遗传模式非常符合海洋漂移模拟得出的期望。然而，来自挪威中部的样本偏离了这些模式，并且在遗传学上与南部斯堪的纳维亚样本非常相似。我们得出结论，该物种的种群结构主要由被动漂移，有限的成年迁徙和产卵场所保真度的相反进化力决定，而在挪威中部观察到的按距离隔离的偏差可能是由于无意易位引起的斯堪的纳维亚南部通过目前的水产养殖方式捕捞的濑鱼。包含离群基因位点可提供更大的分辨率，这表明多样化的选择也可能影响金Sinny濑鱼中的种群结构。

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