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  • A Deep Divergence Time between Sister Species of Eidolon (Pteropodidae) with Evidence for Widespread Panmixia

    Author(s)
    Shi, Jeff J
    Chan, Lauren M
    Peel, Alison J
    Lai, Rebecca
    Yoder, Anne D
    Goodman, Steven M
    Griffith University Author(s)
    Peel, Alison J.
    Year published
    2014
    Metadata
    Show full item record
    Abstract
    The pteropodid fruit bat genus Eidolon is comprised of two extant species: E. dupreanum on Madagascar and E. helvum on the African mainland and offshore islands. Recent population genetic studies of E. helvum indicate widespread panmixia across the continent, although island populations off western Africa show genetic structure. Little is known about the genetic connectivity of E. dupreanum or the divergence time between these two sister species. We examine sequence data for one mitochondrial (cyt-b) and three nuclear regions (β-fib, RAG1, and RAG2) to assess population genetic structure within E. dupreanum and divergence ...
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    The pteropodid fruit bat genus Eidolon is comprised of two extant species: E. dupreanum on Madagascar and E. helvum on the African mainland and offshore islands. Recent population genetic studies of E. helvum indicate widespread panmixia across the continent, although island populations off western Africa show genetic structure. Little is known about the genetic connectivity of E. dupreanum or the divergence time between these two sister species. We examine sequence data for one mitochondrial (cyt-b) and three nuclear regions (β-fib, RAG1, and RAG2) to assess population genetic structure within E. dupreanum and divergence between the two Eidolon spp. In addition, we characterize the demographic history of both taxa using coalescent-based methods. We find little evidence for population structure within E. dupreanum, and suggest that this reflects dispersal based on seasonal fruit availability and a preference for roosting sites in exposed rock outcrops. However, despite apparent panmixia in both Eidolon spp. and large dispersal distances reported in previous studies for E. helvum, these two taxa diverged in the mid-to-late Miocene. Both species are also characterized by population expansion and young, Pleistocene clade ages, although slower population growth in E. dupreanum is likely explained by its divergence via colonization from the mainland. Finally, we discuss the implications of population connectivity in E. dupreanum in the context of its potential role as a reservoir host for pathogens capable of infecting humans.
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    Journal Title
    Acta Chiropterologica
    Volume
    16
    Issue
    2
    DOI
    https://doi.org/10.3161/150811014X687242
    Subject
    Zoology
    Zoology not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/113167
    Collection
    • Journal articles

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