The effects of cultural drift on geographic variation in echolocation calls of the Chinese rufous horseshoe bat (Rhinolophus sinicus)
The effects of cultural drift on geographic variation in echolocation calls of the Chinese rufous horseshoe bat (Rhinolophus sinicus)
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DOI：
10.1111/eth.12627
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发表时间：
2017-08
期刊：
影响因子：
1.7
通讯作者：
Lifen Xie;Keping Sun;Tinglei Jiang;Sen Liu;Guanjun Lu;Longru Jin;Jiang Feng
中科院分区：
文献类型：
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作者：
Lifen Xie;Keping Sun;Tinglei Jiang;Sen Liu;Guanjun Lu;Longru Jin;Jiang Feng
漂变、选择或它们的综合作用通常驱动性状的地理变异。阐明每个过程的相对作用是进化生物学长期以来的研究目标。蝙蝠的声信号是一种表型特征，在社会组织和物种识别中起着重要作用。为了更好地了解声信号的地理变异模式和原因，我们对中国和越南的中国红马蹄蝠（Rhinolophus sinicus）进行了广泛的采样，并重建了物种系统发育。结果表明，在不同的蚁群位置，鸣叫的静息频率随纬度、性别和距离的变化而变化。尽管不同种群间叫声的差异随着距离的增加而增加，但RF差异与遗传距离（仅基于一个核位点和线粒体位点）、气候因素（年平均温度和年平均可降水量）或体型无关。这表明，文化漂变可能比遗传漂变和声学适应在形成区域内中华家鼠声学差异方面起着更重要的作用。
Drift, selection, or their combined effects commonly drive geographic variation in traits. Clarifying the relative roles of each process is a long-standing research goal in evolutionary biology. Acoustic signals of bats are a phenotypic characteristic that plays an important role in social organization and species recognition. We extensively sampled the Chinese rufous horseshoe bat (Rhinolophus sinicus) throughout China and Vietnam and reconstructed a species phylogeny to better understand the patterns and causes of the geographic variation of acoustic signals. Our results showed that the resting frequency (RF) of calls varied with latitude, sex, and distance among different colony locations. RF differences were not correlated with genetic distance (based on only one nuclear locus and the mitochondrial locus), climatic factors (mean annual temperature and mean annual precipitable water), or body size, although differences in calls increased with distance among various populations. This suggests that cultural drift may play more important roles than genetic drift and acoustic adaptation in shaping acoustic differences within regions in R. sinicus.