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Urban, L. ; Santure, A.W.* ; Uddstrom, L.R.* ; Digby, A.* ; Vercoe, D.* ; Eason, D.* ; Crane, J.* ; Wylie, M.J.* ; Davis, T.* ; LeLec, M.F.* ; Guhlin, J.* ; Poulton, S.* ; Slate, J.* ; Alexander, A.* ; Fuentes-Cross, P.* ; Dearden, P.K.* ; Gemmell, N.J.* ; Azeem, F.* ; Weyland, M.* ; Schwefel, H.G.L.* ; van Oosterhout, C.* ; Morales, H.E.*

The genetic basis of the kākāpō structural color polymorphism suggests balancing selection by an extinct apex predator.

PLoS Biol. 22:e3002755 (2024)
Verlagsversion DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
The information contained in population genomic data can tell us much about the past ecology and evolution of species. We leveraged detailed phenotypic and genomic data of nearly all living kākāpō to understand the evolution of its feather color polymorphism. The kākāpō is an endangered and culturally significant parrot endemic to Aotearoa New Zealand, and the green and olive feather colorations are present at similar frequencies in the population. The presence of such a neatly balanced color polymorphism is remarkable because the entire population currently numbers less than 250 birds, which means it has been exposed to severe genetic drift. We dissected the color phenotype, demonstrating that the two colors differ in their light reflectance patterns due to differential feather structure. We used quantitative genomics methods to identify two genetic variants whose epistatic interaction can fully explain the species' color phenotype. Our genomic forward simulations show that balancing selection might have been pivotal to establish the polymorphism in the ancestrally large population, and to maintain it during population declines that involved a severe bottleneck. We hypothesize that an extinct apex predator was the likely agent of balancing selection, making the color polymorphism in the kākāpō a "ghost of selection past."
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Genome; Association; Evolution; History
ISSN (print) / ISBN 1544-9173
e-ISSN 1545-7885
Zeitschrift PLoS Biology
Quellenangaben Band: 22, Heft: 9, Seiten: , Artikelnummer: e3002755 Supplement: ,
Verlag Public Library of Science (PLoS)
Verlagsort 1160 Battery Street, Ste 100, San Francisco, Ca 94111 Usa
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Helmholtz Artifical Intelligence Cooperation Unit (HAICU)
Helmholtz Pioneer Campus (HPC)
Förderungen Recovery Programme
pomacr
kamacr
Aotearoa New Zealand Department of Conservation Te Papa Atawhai and its Kamacr
Experiment.com
Aotearoa New Zealand Department of Conservation Te Papa Atawhai (DOC)
Alexander von Humboldt-Stiftung