Contrasting genetic structure in two co-distributed species of old world fruit bat.
Contrasting genetic structure in two co-distributed species of old world fruit bat.
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旧大陆果蝠两种共同分布物种的遗传结构对比
DOI：
10.1371/journal.pone.0013903
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发表时间：
2010-11-10
期刊：
影响因子：
3.7
通讯作者：
Zhang S
中科院分区：
文献类型：
--
作者：
Chen J;Rossiter SJ;Flanders JR;Sun Y;Hua P;Miller-Butterworth C;Liu X;Rajan KE;Zhang S
棕褐色果蝠（学名：Rousettus leschenaulti）和大短鼻果蝠（学名：Cynopterus sphinx）是两种分布广泛的东半球果蝠，分布于东南亚和东亚。前一种在洞穴中形成大的群体，而后者在树上以小群体扎根。为了检验这些社会组织和栖息生态学的差异是否与基因流的对比模式有关，我们使用mtDNA和核基因座来表征来自中国，越南和印度的两个物种的种群遗传细分和地理历史。我们从R. leschenaulti使用这两种类型的标记揭示了在整个研究区域遗传结构的证据很少。另一方面，C.与中国和越南的样本相比，来自印度的狮身人面像样本显示出显著的mtDNA遗传分化，以及中国内部微卫星基因型的更大结构。人口统计学分析表明，在过去的快速人口扩张的两个类群的签名，与最近的人口增长在C。斯芬克斯。因此，在R. leschenaulti不太可能反映过去的事件。相反，我们认为，缺乏子结构的R。leschenaulti是群体间更高水平的基因流动的结果，而这种物种更大的游动性是与洞穴栖息有关的适应。
The fulvous fruit bat (Rousettus leschenaulti) and the greater short-nosed fruit bat (Cynopterus sphinx) are two abundant and widely co-distributed Old World fruit bats in Southeast and East Asia. The former species forms large colonies in caves while the latter roots in small groups in trees. To test whether these differences in social organization and roosting ecology are associated with contrasting patterns of gene flow, we used mtDNA and nuclear loci to characterize population genetic subdivision and phylogeographic histories in both species sampled from China, Vietnam and India. Our analyses from R. leschenaulti using both types of marker revealed little evidence of genetic structure across the study region. On the other hand, C. sphinx showed significant genetic mtDNA differentiation between the samples from India compared with China and Vietnam, as well as greater structuring of microsatellite genotypes within China. Demographic analyses indicated signatures of past rapid population expansion in both taxa, with more recent demographic growth in C. sphinx. Therefore, the relative genetic homogeneity in R. leschenaulti is unlikely to reflect past events. Instead we suggest that the absence of substructure in R. leschenaulti is a consequence of higher levels of gene flow among colonies, and that greater vagility in this species is an adaptation associated with cave roosting.
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影响因子：
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影响因子：
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