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Please use this identifier to cite or link to this item:
http://140.128.103.80:8080/handle/310901/24798
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| Title: | Molecular phylogenetic reconstructions identify East Asia as the cradle for the evolution of the cosmopolitan genus Myotis (Mammalia, Chiroptera) |
| Authors: | Ruedi, M.;Stadelmann, B.;Gager, Y.;Douzery, E.J.P.;Francis, C.M.;Lin, L.-K.;Guillen-Servent, A.;Cibois, A. |
| Contributors: | Department of Animal Science and Biotechnology, Tunghai University |
| Keywords: | Biogeography;Lagrange;Molecular dating;Myotis;Vespertilionidae |
| Date: | 2013 |
| Issue Date: | 2014-05-30T02:37:54Z (UTC)
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| Abstract: | Sequences of the mitochondrial cytochrome b (1140. bp) and nuclear Rag 2 (1148. bp) genes were used to assess the evolutionary history of the cosmopolitan bat genus Myotis, based on a worldwide sampling of over 88 named species plus 7 species with uncertain nomenclature. Phylogenetic reconstructions of this comprehensive taxon sampling show that most radiation of species occurred independently within each biogeographic region. Our molecular study supports an early divergence of species from the New World, where all Nearctic and Neotropical species plus a lineage from the Palaearctic constitute a monophyletic clade, sister to the remaining Old World taxa. The major Old World clade includes all remaining Eurasian taxa, most Oriental species, one Oceanian, and all Ethiopian species. Another lineage, including M. latirostris from Taiwan, appears at the base of these two major biogeographic clades and, because it bears nyctalodont molars, could be considered as a distinct genus. However, this molar configuration is also found in crown-group species, indicating that these dental characters are variable in the genus Myotis and may confound interpretation of the fossil record. Molecular datings suggest an origin of all recent Myotis in the early Miocene (about 21. MYA with 95% highest posterior density interval 23-20. MYA). This period was characterized by a global climatic cooling that reduced the availability of tropical habitats and favoured the development of more temperate vegetation. This sharp climatic change might have triggered the evolution of Myotis in the Northern continents, because Myotis ancestors seem to have been well adapted and successful in such temperate habitats. Ancestral area reconstructions based on the molecular phylogeny suggest that the eastern portion of the Asian continent was an important center of origin for the early diversification of all Myotis lineages, and involved relatively few subsequent transcontinental range expansions. ? 2013 Elsevier Inc. |
| Relation: | Molecular Phylogenetics and Evolution,Vol.69,Issue3,P.437-469 |
| Appears in Collections: | [畜產與生物科技學系所] 期刊論文
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