Evolutionary insights into Rhinolophus episcopus (Chiroptera, Rhinolophidae) in China: Isolation by distance, environment, or sensory system?
Evolutionary insights into Rhinolophus episcopus (Chiroptera, Rhinolophidae) in China: Isolation by distance, environment, or sensory system?
复制标题
中国菊头蝠（翼手目、菊头科）的进化见解：距离、环境或感觉系统的隔离？
DOI：
10.1111/jzs.12394
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发表时间：
2021
影响因子：
1.9
通讯作者：
Jiang Feng
中科院分区：
文献类型：
--
作者：
Tong Liu;Kangkang Zhang;Wentao Dai;Longru Jin;Keping Sun;Jiang Feng
进化过程可能受到几个因素的影响，如地理隔离，环境选择和感官变化。对于大多数夜行蝙蝠来说，回声定位是用于捕食和交流的主要感觉系统，并且在翼手目动物的多样化和进化中起着重要作用。了解地理，环境和这种感觉系统对种群遗传分化的相对贡献，可以阐明蝙蝠早期物种形成和进化的过程。在这项研究中，我们收集了空间和环境信息，回声定位的电话，以及以前发表的遗传数据（6个微卫星位点和细胞色素b基因）广泛distributedRhinolophus episcopus种群测试核和线粒体分歧的三个假设（隔离距离，隔离环境，隔离的感觉变化）和揭示的因素，驱动种内遗传分化。中等水平的核分化与地理/空间距离和声学变异相关，而相对较高水平的线粒体分化主要与声学分歧相关。遗传分化与环境变量之间没有显著相关性。在这三个因素中，声学分歧解释的比例最高的核和线粒体分歧。因此，我们的研究结果表明，感官变化可能发挥了重要作用，在蝙蝠物种形成，这是与感官变化隔离的假设相一致的早期驱动人口隔离。我们的研究强调需要考虑更多的因素，特别是感官性状，并在景观遗传研究中结合联合收割机多种统计方法，以测试它们对驱动种群分化的潜在贡献。
Evolutionary processes can be influenced by several factors, such as geographic isolation, environmental selection, and sensory variation. For most nocturnal bats, echolocation is the primary sensory system used to prey and communicate, and plays important roles in chiropteran diversification and evolution. Understanding the relative contribution of geography, the environment, and this sensory system to population genetic divergence can elucidate the processes involved in bat incipient speciation and evolution. In this study, we collected spatial and environmental information, echolocation calls, as well as the previously published genetic data (six microsatellite loci and the mitochondrialcytochrome bgene) of widely distributedRhinolophus episcopuspopulations to test three hypotheses for nuclear and mitochondrial divergence (isolation by distance, isolation by environment, and isolation by sensory variation) and unveil the factors that drive intraspecific genetic differentiation. The moderate level of nuclear differentiation was correlated with geographic/spatial distance and acoustic variation, whereas the relatively high level of mitochondrial differentiation was mainly associated with acoustic divergence. No significant correlation was observed between genetic divergence and environmental variables. Among the three factors, acoustic divergence explained the highest percentage of both nuclear and mitochondrial divergence. Thus, our results indicate that sensory variation may have played important roles in driving population isolation early in bat speciation, which is consistent with the hypothesis of isolation by sensory variation. Our study emphasizes the need to consider more factors, especially sensory traits, and combine multiple statistical methods in landscape genetic studies to test their potential contributions to driving population divergence.