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首页> 外文期刊>Marine ecology progress series >Macro- and micro-geographic variation in pantophysin (PanI) allele frequencies in NE Atlantic cod Gadus morhua
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Macro- and micro-geographic variation in pantophysin (PanI) allele frequencies in NE Atlantic cod Gadus morhua

机译：东北鳕鳕鱼的泛素（PanI）等位基因频率的宏观和微观地理变异

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摘要

Using samples of Atlantic cod Gadus morhua L. from the North Sea, and previously published genetic data from the Irish and Celtic Seas, Iceland, and Norwegian fjord and offshore populations, we describe striking macro- and micro-geographic patterns in pantophysin (PanI) allele frequencies. The relatively abrupt discontinuity in PanI allele frequency distribution at 2 different locations is not congruent with standard patterns of isolation by distance and could arise from population admixtures, historical or contemporary natural selection, behavioural segregation or a combination of these factors. Here, we examined the relationships between the distributions of PanI alleles and temperature, salinity and depth. In the northeast Atlantic, temperature was highly correlated with PanI allele frequency, even when the effect of geographic distance was removed. In the Norwegian fjords, partial Mantel tests indicated that temperature, salinity and depth all had a significant effect on PanI allele frequency in juvenile fish. However, a sample from the brackish waters of the eastern Baltic Sea suggested that salinity may be linked to PanI allele frequency distribution and that the relationship with temperature was weaker in areas of low salinity. Strong correlations between PanI allele frequencies and key environmental variables, together with evidence from the available literature, suggested that environmental conditions play an important role in determining the distribution of different PanI genotypes. The combined use of environmental data, PanI genotyping and neutral markers may provide a valuable approach to examine local adaptation, levels of gene flow and stock structuring.
机译：使用北海的大西洋鳕鱼Gadus morhua L.的样本，以及先前发布的爱尔兰和凯尔特海，冰岛以及挪威峡湾和近海种群的遗传数据，我们描述了泛素（PanI）的惊人的宏观和微观地理格局等位基因频率。 PanI等位基因在2个不同位置的频率分布中相对突然的不连续性与按距离隔离的标准模式并不相符，可能是由于人口混杂，历史或当代自然选择，行为隔离或这些因素的组合而引起的。在这里，我们检查了PanI等位基因的分布与温度，盐度和深度之间的关系。在东北大西洋，即使消除了地理距离的影响，温度也与PanI等位基因频率高度相关。在挪威的峡湾中，部分Mantel测试表明温度，盐度和深度都对幼鱼的PanI等位基因频率有重要影响。然而，从波罗的海东部咸淡水的样本表明，盐度可能与PanI等位基因频率分布有关，并且在低盐度地区与温度的关系较弱。 PanI等位基因频率与关键环境变量之间的密切相关性以及现有文献的证据表明，环境条件在确定不同PanI基因型的分布中起着重要作用。环境数据，PanI基因分型和中性标记物的组合使用可能为检查局部适应性，基因流水平和种群结构提供一种有价值的方法。

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