ArticleiScience2024
Hybridization in birds-of-paradise: Widespread ancestral gene flow despite strong sexual selection in a lek-mating system.
Article in iScience, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- A colorful legacy of hybridization in wood-warblers includes frequent sharing of carotenoid genes among species and genera.PLoS biology · 2025Article
- Reticulate and Hybrid Speciation is Promoted by Environmental Instability in an Indo-Pacific Species Complex of Whistlers (Aves: Pachycephala).Molecular ecology · 2025Article
- Museomics unravels cryptic diversity in an endemic group of New Guinean songbirds.Biology letters · 2025Article
- Frequent Hybridisation Between Parapatric Lekking Bird-of-Paradise Species.Molecular ecology · 2025Article
- Contemporary intergeneric hybridization and backcrossing among birds-of-paradise.Evolution letters · 2024Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sexual selection can directly contribute to reproductive isolation and is an important mechanism that can lead to speciation. Lek-mating is one of the most extreme forms of sexual selection, but surprisingly does not seem to preclude occasional hybridization in nature. However, hybridization among lekking species may still be trivial if selection against offspring with intermediate phenotypes prohibits introgression. Here we investigate this further by sequencing the genomes of nearly all bird-of-paradise (Paradisaeidae) species and 10 museum specimens of putative hybrid origin. We find that intergeneric hybridization indeed still takes place despite extreme differentiation in form, plumage, and behavior. In parallel, the genomes of contemporary species contain widespread signatures of past introgression, demonstrating that hybridization has repeatedly resulted in shared genetic variation despite strong sexual isolation. Our study raises important questions about extrinsic factors that modulate hybridization probability and the evolutionary consequences of introgressive hybridization between lekking species.
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