Assessing the potential for reverse colonization among Japanese birds by mining DNA barcode data
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Reverse colonization from an island to a continent runs counter to the classic models of speciation in island biogeography. We mined the Barcode of Life Data Systems and generated mitochondrial DNA-based phylogenetic analyses for 118 Japanese bird species to identify candidates for reverse colonization histories from Japan to mainland Asia. Mitochondrial DNA tree topologies suggested 5 strong and 35 weak candidate species for reverse colonization from Japan to mainland Asia. Thirty-nine mitochondrial DNA topologies contradicted a reverse colonization hypothesis. For the remaining 39 species the ancestral distribution is ambiguous from the available mitochondrial DNA gene tree topology. A combination of geography and climatic and geologic history are likely drivers of avian speciation in the Japanese Islands and subsequent reverse colonization events to mainland Asia. These data highlight the utility of large scale DNA barcoding databases in generating phylogenetic and biogeographic hypotheses.
KeywordsDNA barcode Island biogeography Japanese birds Reverse colonization Speciation
We gratefully acknowledge logistic support and help by Drs. Alexey Kryukov, Yaroslav Red’kin, Irina Marova, Liudmila Spiridonova, Vladimir Ivanitskii, and every one of the staff at Moscow State University and at the Institute of Biology and Soil Science, Russian Academy of Sciences, Vladivostok. We thank an anonymous reviewer for many valuable comments that greatly improved our manuscript, and express special thanks to the contribution of Dr. Herman Mays Jr. that exceed the contribution as a reviewer. We also thank Drs. Takema Saitoh, Norimasa Sugita, and every Japanese ornithologist who conducted and supported DNA barcode of birds. We gratefully acknowledge financial support from JSPS KAKENHI Grant Number 24657066.
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