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dc.contributor.authorMagdalena Zarowieckien_US
dc.contributor.authorCatherine Waltonen_US
dc.contributor.authorElizabeth Torresen_US
dc.contributor.authorErica Mcalisteren_US
dc.contributor.authorPe Than Htunen_US
dc.contributor.authorChalao Sumrandeeen_US
dc.contributor.authorTho Sochantaen_US
dc.contributor.authorTrung Ho Dinhen_US
dc.contributor.authorLee Ching Ngen_US
dc.contributor.authorYvonne Marie Lintonen_US
dc.contributor.otherThe Natural History Museum, Londonen_US
dc.contributor.otherUniversity of Manchesteren_US
dc.contributor.otherFormerly of the Research Institute of Tropical Medicine (RITM)en_US
dc.contributor.otherMedical Entomology Research Divisionen_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherNational Center for Parasitology, Entomology and Malaria Controlen_US
dc.contributor.otherNational Institute of Malariology, Parasitology and Entomology Hanoien_US
dc.contributor.otherNational Environment Agency, Singaporeen_US
dc.identifier.citationJournal of Biogeography. Vol.38, No.7 (2011), 1422-1432en_US
dc.description.abstractAim The environmental effect of Pleistocene climatic change in the Indo-Oriental region has resulted in allopatric fragmentation and the generation of diversity in forest-associated species. The aim of this study was to determine the extent to which Pleistocene climatic change has resulted in the fragmentation and speciation of an open-habitat-adapted mosquito, Anopheles vagus s.l., across its range. Location Anopheles vagus s.l. was sampled across the Indo-Oriental region. Methods We generated 116 mitochondrial cytochrome c oxidase subunit I (COI) and 121 nuclear internal transcribed spacer 2 (ITS2) DNA sequences from 18 populations. Relationships between mitochondrial haplotypes were reconstructed using minimum spanning networks, and population structure was examined using analyses of molecular variance. The population history, including lineage divergence times, population expansion and gene flow, was inferred using beast and the isolation with migration (IM) model. Results There was no evidence to support the presence of the endemic Philippines species, A. limosus; instead, Philippine populations were closely related to, and derived from, A. vagus on the eastern Southeast Asian mainland. The most distinct populations were those from Java and East Timor, which differed from all other populations by all individuals having a 4-bp insertion in the ITS2 sequence. The corresponding mitochondrial haplotypes had an estimated divergence time of 2.6Ma [95% confidence interval (CI) 1.9-3.6Ma]. Haplotype networks and analysis of molecular variance for COI supported western (Sri Lanka, India and Myanmar) and eastern (Thailand, Singapore, Cambodia, Vietnam and the Philippines) population groupings. This grouping structure results from the divergence of an eastern and a western mitochondrial lineage, estimated to have occurred 0.37Ma (95% CI 0.26-0.55Ma). Subsequent migration from the east to the west (0.16Ma) is inferred to have created an admixture zone in Myanmar and Thailand. Main conclusions With the possible exception of populations from Java and East Timor, A. vagus appears to be one widespread genetically diverse taxon across its extensive range. The abundance of grassland during long interglacial periods may have facilitated population connectivity and range expansion across the Oriental and western Australasian regions. © 2011 Blackwell Publishing Ltd.en_US
dc.rightsMahidol Universityen_US
dc.subjectAgricultural and Biological Sciencesen_US
dc.subjectEnvironmental Scienceen_US
dc.titlePleistocene genetic connectivity in a widespread, open-habitat-adapted mosquito in the Indo-Oriental regionen_US
Appears in Collections:Scopus 2011-2015

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