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Title: Assessing genetic diversity patterns at neutral and adaptive loci to inform population reinforcement of an endangered migratory vulture
Author(s): Bounas, Anastasios
Saravia‑Mullin, Victoria
Méndez, Maria
Arkumarev, Volen
Aghajanyan, Lusinev
Ararat, Korsh
Buechley, Evan
Dobrev, Vladimir
Dobrev, Dobromir
Efrat, Ron
Klisurov, Ivaylo
Kret, Elzbieta
Skartsi, Theodora
Oppel, Steffen
Petrov, Rusko
Şekercioğlu, ÇağanLook up in the Integrated Authority File of the German National Library
Vaidl, Anton
Donázar, José A.
Nikolov, Stoyan C.
Sotiropoulos, KonstantinosLook up in the Integrated Authority File of the German National Library
Issue Date: 2023
Type: Article
Language: English
Abstract: One of the primary goals of conservation translocation programs should be the maintenance of both population demographic stability and genetic diversity. Here, we provide genetic management recommendations to inform a population reinforcement of the declining Egyptian Vulture population in the Balkans. Specifically, we examined whether the number of released individuals is sufficient to prevent genetic diversity loss due to random genetic drift and what the origin of the individuals should be that comprise the captive breeding pool. To this aim, we estimated and assessed genetic diversity levels and genetic structure of Egyptian Vulture populations across much of the species’ range using both neutral and non-neutral candidate loci involved in migration. We then evaluated the effects of the currently proposed population management scheme and candidate source populations on retaining allelic diversity. Our results show low differentiation values among populations and absence of genetic structure which point to past high gene flow. Furthermore, there was no predicted significant impact of different source populations on the genetic diversity of the recipient Balkan population. We also found that the declining Egyptian Vulture population in the Balkans still retains high levels of genetic diversity and therefore genetic diversity restoration is not currently needed. However, without any management, diversity is likely to decrease fast because of increased genetic drift as the population size continues to decline. Population reinforcement with nine birds per year for 20 years would provide sufficient demographic support for the population to retain > 85% of rare allelic diversity. Birds originating from the Balkans would ensure ecological and behavioral similarity and thus would be the best option for reinforcement. Nevertheless, our results demonstrate that to prevent further population contraction and loss of adaptive alleles, releasing individuals of different origin would also be appropriate.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Journal of ornithology
Publisher: Springer
Publisher Place: Berlin
Original Publication: 10.1007/s10336-023-02048-w
Appears in Collections:Open Access Publikationen der MLU

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