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Depth as a potential driver of genetic structure of Sebastes mentella across the North Atlantic Ocean

机译:深度是横跨北大西洋的门氏鲈的遗传结构的潜在驱动力

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摘要

A primary question that remains to be answered about the fishery for Sebastes mentella is whether it exploits several stocks within the North Atlantic Ocean. To address this issue, 1240 redfish were collected from several fishing grounds in late 2006 and early 2007 and genotyped at 12 microsatellite loci. Contemporary allele frequencies were compared with archived data to examine the temporal stability of the genetic structure. The analyses all revealed the presence of three genetically distinguishable clusters, which persisted throughout the study period, suggesting that the genetic structure detected is genuine. Cluster D included fish from the deep Irminger Sea and west Faroe Islands, and Cluster I included fish only from the Icelandic shelf. All other fish grouped in a third cluster (S). Further analyses revealed that the genetic pattern observed was not primarily attributable to isolation by distance, but rather to depth distribution.
机译:关于塞巴斯蒂斯门氏捕捞渔业的一个尚待回答的主要问题是,该捕捞是否在北大西洋海域开采了一些种群。为了解决这个问题,2006年末和2007年初从几个渔场收集了1240条红鱼,并在12个微卫星基因座上进行了基因分型。将当代等位基因频率与存档数据进行比较,以检验遗传结构的时间稳定性。分析都显示存在三个在遗传上可区分的簇,这些簇在整个研究期间都持续存在,这表明所检测到的遗传结构是真实的。 D组包括来自深处的艾明格海和法罗群岛西部的鱼类,而I组仅包括来自冰岛陆架的鱼类。所有其他鱼类归为第三类(S)。进一步的分析表明,观察到的遗传模式主要不是归因于距离的隔离,而是归因于深度分布。

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