Population connectivity across a highly fragmented distribution: Phylogeography of the Chalcophaps doves
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Chalcophaps is a morphologically conserved genus of ground-walking doves distributed from India to mainland China, south to Australia, and across the western Pacific to Vanuatu. Here, we reconstruct the evolutionary history of this genus using DNA sequence data from two nuclear genes and one mitochondrial gene, sampled from throughout the geographic range of Chalcophaps. We find support for three major evolutionary lineages in our phylogenetic reconstruction, each corresponding to the three currently recognized Chalcophaps species. Despite this general concordance, we identify discordant mitochondrial and nuclear ancestries in the subspecies C. longirostris timorensis, raising further questions about the evolutionary history of this Timor endemic population. Within each of the three species, we find evidence for isolation by distance or hierarchical population structure, indicating an important role for geography in the diversification of this genus. Despite being distributed broadly across a highly fragmented geographic region known as a hotspot for avian diversification, the Chalcophaps doves show modest levels of phenotypic and genetic diversity, a pattern potentially explained by strong population connectivity owing to high overwater dispersal capability.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 107333 |
| Tidsskrift | Molecular Phylogenetics and Evolution |
| Vol/bind | 166 |
| Antal sider | 11 |
| ISSN | 1055-7903 |
| DOI | |
| Status | Udgivet - 2022 |
Bibliografisk note
Funding Information:
We thank the Western Australian Museum, Australian National Wildlife Collection, the California Academy of Sciences, Florida Museum of Natural History, Louisiana State University Museum of Natural History, for providing tissue and blood samples to make this project possible. For field work in the Solomon Islands we thank the Solomon Islands Ministry of Environment, Climate Change, Disaster Management, and Meteorology; numerous provincial governments; and the chiefs, landowners, and communities that allowed access to customary land. We would also like to thank the PNG Department of Environment and Conservation and Milne Bay Provincial government for permission to work in Papua New Guinea, and Bulisa Iova and the PNG National Museum and Art Gallery for assistance in the field. This work was supported by National Science Foundation grants to RGM (DEB-1557053) and MJA (DEB-1557051). PAH acknowledges the support of the VILLUM FONDEN for the Center for Global Mountain Biodiversity (grant no. 25925). DAD was supported by the Madison & Lila Self Graduate Fellowship for the duration of this project. ENO was supported by the NSF GRFP for the duration of this project. All individual gene sequences analyzed here have been uploaded to GenBank (Table 1). Sequence data in fasta format and all scripts used for data analysis can be found at the following GitHub repository: github.com/DevonDeRaad/Chalcophaps.Sanger. The entire repository including raw sequence data and all scripts to perform analyses is stably archived and available for download at: https://doi.org/10.5061/dryad.x3ffbg7kz
Funding Information:
We thank the Western Australian Museum, Australian National Wildlife Collection, the California Academy of Sciences, Florida Museum of Natural History, Louisiana State University Museum of Natural History, for providing tissue and blood samples to make this project possible. For field work in the Solomon Islands we thank the Solomon Islands Ministry of Environment, Climate Change, Disaster Management, and Meteorology; numerous provincial governments; and the chiefs, landowners, and communities that allowed access to customary land. We would also like to thank the PNG Department of Environment and Conservation and Milne Bay Provincial government for permission to work in Papua New Guinea, and Bulisa Iova and the PNG National Museum and Art Gallery for assistance in the field. This work was supported by National Science Foundation grants to RGM ( DEB-1557053 ) and MJA ( DEB-1557051 ). PAH acknowledges the support of the VILLUM FONDEN for the Center for Global Mountain Biodiversity (grant no. 25925 ). DAD was supported by the Madison & Lila Self Graduate Fellowship for the duration of this project. ENO was supported by the NSF GRFP for the duration of this project.
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© 2021 Elsevier Inc.
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