Museum genomics provide insight into the extinction of a specialist North American warbler species.

Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE

Original Publication: London : Nature Publishing Group, copyright 2011-

Genomics*/methods ; Museums* ; Extinction, Biological* ; DNA, Mitochondrial*/genetics ; Polymorphism, Single Nucleotide*; Animals ; Songbirds/genetics ; Ecosystem ; Genetic Variation ; North America ; Genetics, Population

Museum genomics provide an opportunity to investigate population demographics of extinct species, especially valuable when research prior to extinction was minimal. The Bachman's warbler (Vermivora bachmanii) is hypothesized to have gone extinct due to loss of its specialized habitat. However, little is known about other potential contributing factors such as natural rarity or changes to connectivity following habitat fragmentation. We examined mitochondrial DNA (mtDNA) and genome-wide SNPs using specimens collected from breeding and migration sites across the range of the Bachman's warbler. We found no signals of strong population structuring across the breeding range of Bachman's warblers in both mtDNA and genome-wide SNPs. Thus, long-term population isolation did not appear to be a significant contributor to the extinction of the Bachman's warbler. Instead, our findings support the theory that Bachman's warblers underwent a rapid decline likely driven by habitat destruction, which may have been exacerbated by the natural rarity, habitat specificity and low genetic diversity of the species.
(© 2024. The Author(s).)

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0 (DNA, Mitochondrial)

Date Created: 20240724 Date Completed: 20240725 Latest Revision: 20240806

20240806

PMC11269716

10.1038/s41598-024-67595-5

39048633