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Drivers for genetic structure at different geographic scales for Pacific red snapper ( Lutjanus peru ) and yellow snapper ( Lutjanus argentiventris ) in the tropical Eastern Pacific
Journal of Fish Biology ( IF 2 ) Pub Date : 2021-01-19 , DOI: 10.1111/jfb.14656
Nicole Reguera‐Rouzaud 1 , Noé Díaz‐Viloria 1 , Ricardo Pérez‐Enríquez 2 , Elaine Espino‐Barr 3 , Mailin Isabel Rivera‐Lucero 4 , Adrián Munguía‐Vega 5, 6
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The tropical Eastern Pacific (TEP) is a highly dynamic region and a model system to study how habitat discontinuities affect the distribution of shorefishes, particularly for species that display ontogenetic habitat shifts, including snappers (Lutjanidae). To evaluate the genetic structure of the Pacific red snapper (Lutjanus peru) and the yellow snapper (Lutjanus argentiventris) throughout their distribution range along the TEP, 13 and 11 microsatellite loci were analyzed, respectively. The genetic diversity of L. peru (N = 446) and L. argentiventris (N = 170) was evaluated in 10 and five localities, respectively, showing slightly higher but non-significant values in the Gulf of California for both species. The genetic structure analysis identified the presence of significant genetic structure in both species, but the locations of the identified barriers for the gene flow differed between species. The principal driver for the genetic structure at large scales >2500 km was isolation by distance. At smaller scales (<250 km) the habitat discontinuity for juveniles and adults and the environmental differences throughout the distribution range represented potential barriers to gene flow between populations for both species. This article is protected by copyright. All rights reserved.

中文翻译:

热带东太平洋太平洋红鲷鱼 ( Lutjanus peru ) 和黄鲷鱼 ( Lutjanus argentiventris ) 不同地理尺度遗传结构的驱动因素

热带东太平洋 (TEP) 是一个高度动态的区域和一个模型系统,用于研究栖息地不连续性如何影响滨鱼的分布,特别是对于显示个体发生栖息地变化的物种,包括鲷鱼 (Lutjanidae)。为了评估太平洋红鲷鱼 (Lutjanus peru) 和黄鲷鱼 (Lutjanus argentiventris) 在 TEP 分布范围内的遗传结构,分别分析了 13 和 11 个微卫星位点。L. peru (N = 446) 和 L. argentiventris (N = 170) 的遗传多样性分别在 10 个和 5 个地点进行了评估,显示两个物种在加利福尼亚湾的价值略高但不显着。遗传结构分析确定了两个物种中存在显着的遗传结构,但是基因流的已识别障碍的位置因物种而异。大于 2500 公里的大规模遗传结构的主要驱动因素是距离隔离。在较小的尺度上(<250 公里),幼鱼和成鱼的栖息地不连续性以及整个分布范围内的环境差异代表了两个物种种群之间基因流动的潜在障碍。本文受版权保护。版权所有。250 公里)幼鱼和成鱼的栖息地不连续性以及整个分布范围内的环境差异代表了两个物种种群之间基因流动的潜在障碍。本文受版权保护。版权所有。250 公里)幼鱼和成鱼的栖息地不连续性以及整个分布范围内的环境差异代表了两个物种种群之间基因流动的潜在障碍。本文受版权保护。版权所有。
更新日期:2021-01-19
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