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Mapping our knowledge on birds of prey population genetics

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Abstract

The current and rapid anthropogenic environmental changes could disproportionately impact ecosystems, particularly when they affect species with critical roles in ecosystem integrity. As top predators, raptors provide critical top-down ecosystem services and structure food webs. Yet, many avian predators are currently experiencing global population declines and some are threatened with extinction. The dire conservation status of numerous raptor species warrants urgent action, and detailed ecological data are needed to guide management strategy, including empirical knowledge regarding genetic structure. To that end, we compiled published studies investigating population genetic structure in raptors. Out of a total of 83 publications on 50 raptors species published, we identified a lack of empirical genetic studies for species from the Southern Hemisphere and species with a high level of extinction risk according to IUCN Red List criteria. Only 24% of the species studied are considered “threatened” (i.e., with the “Vulnerable”, “Endangered”, or “Critically Endangered” status). We found a significant signal of genetic differentiation in 41 species (82%) at the study-specific population. Isolation-by-Distance is a common pattern of genetic differentiation in raptors. Future steps in raptor conservation could prioritize facilitating genetic studies on species located in the Southern Hemisphere and on species with a conservation status. A better inclusion of some key genetic metrics (e.g., Ne, Ne/Nc, genetic diversity) in published studies will further help management and conservation across various species and ecosystems.

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Data availability

Database used in the article can be found on Figshare: https://doi.org/10.6084/m9.figshare.12455732 and the R script for figures https://doi.org/10.6084/m9.figshare.12455759.

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Acknowledgements

The Canada Research Program, Polar Knowledge Canada, The National Science and Engineering Research Council of Canada (NSERC), and the Canadian Foundation for Innovation supported N.L. M.G.-L. received NSERC and The Fonds de recherche du Québec—Nature et technologies (FRQNT) grants for her MS. We also thank C.J.W. McClure for sharing data linked to Figure 4. We also thank S. Hoban (Associate editor) and two anonymous reviewers whose comments help to improve and clarify this study, and  B.S. Holland for reviewing the final version of this manuscript. Database is available on Figshare; https://doi.org/10.6084/m9.figshare.12455732.

Funding

The Canada Research Program, Polar Knowledge Canada, NSERC and the Canadian Foundation for Innovation supported N.L. M.G.-L. received NSERC and FRQNT grants for her MS.

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Contributions

All authors contributed to the study conception and design. Data collection and analysis were performed by M.G.-L. with inputs from all co-authors. M.G.-L. wrote the first draft of the manuscript and all co-authors commented on all versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Nicolas Lecomte.

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The authors declare that they have no conflict of interest.

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Gousy-Leblanc, M., Yannic, G., Therrien, JF. et al. Mapping our knowledge on birds of prey population genetics. Conserv Genet 22, 685–702 (2021). https://doi.org/10.1007/s10592-021-01368-9

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  • DOI: https://doi.org/10.1007/s10592-021-01368-9

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