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Phylogeographic patterns in widespread corvid birds
E Haring1, A Gamauf, A Kryukov
1Museum of Natural History Vienna, 1st Zoological Department, Burgring 7, A-1010 Vienna, Austria. elisabeth.haring@nhm-wien.ac.at
Molecular Phylogenetics and Evolution
|October 9, 2007
Summary
Genetic analysis of Corvus corone reveals two distinct mitochondrial lineages across Eurasia. This phylogeographic pattern, also seen in other Palearctic corvids, suggests shared evolutionary history shaped by Pleistocene climate changes.
Area of Science:
- Evolutionary Biology
- Ornithology
- Molecular Ecology
Background:
- Understanding intraspecific genetic diversity is crucial for avian conservation and evolutionary studies.
- Phylogeographic patterns in Palearctic corvids are complex and influenced by historical biogeography.
Purpose of the Study:
- To investigate the intraspecific genetic diversity and phylogeography of Corvus corone using mitochondrial DNA.
- To compare phylogeographic patterns across various Palearctic corvid taxa and explore potential drivers of differentiation.
Main Methods:
- Mitochondrial (mt) control region sequencing was employed as a molecular marker.
- Phylogeographic analysis was conducted on Corvus corone and compared with other corvid species.
Main Results:
- Corvus corone exhibits a split into two distinct mitochondrial lineages, one widespread across Eurasia and another in the Russian Far East and Japan.
- Similar deep genetic splits were observed in five other Palearctic corvid taxa, indicating a common divergence timeframe.
- Species like Corvus corax, Perisoreus infaustus, and Nucifraga caryocatactes showed no significant lineage differentiation.
Conclusions:
- The observed phylogeographic patterns in Palearctic corvids likely result from ecological factors and climatic shifts during the Pleistocene.
- Deep genetic divergences in widely distributed corvids have implications for ongoing taxonomic discussions and species delimitation.
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