ArticleProceedings. Biological sciences2022
Concerted variation in melanogenesis genes underlies emergent patterning of plumage in capuchino seedeaters.
Article in Proceedings. Biological sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 14 citations in OpenAlex.
- A colorful legacy of hybridization in wood-warblers includes frequent sharing of carotenoid genes among species and genera.PLoS biology · 2025Article
- Plumage polymorphism in the black sparrowhawk (Accipiter melanoleucus) is strongly associated with the expression level of agouti signaling protein.The Journal of heredity · 2025Article
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Authors and funding
10 authors at 5 institutions in 4 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Coloration traits are central to animal communication; they often govern mate choice, promote reproductive isolation and catalyse speciation. Specific genetic changes can cause variation in coloration, yet far less is known about how overall coloration patterns-which involve combinations of multiple colour patches across the body-can arise and are genomically controlled. We performed genome-wide association analyses to link genomic changes to variation in melanin (eumelanin and pheomelanin) concentration in feathers from different body parts in the capuchino seedeaters, an avian radiation with diverse colour patterns despite remarkably low genetic differentiation across species. Cross-species colour variation in each plumage patch is associated with unique combinations of variants at a few genomic regions, which include mostly non-coding (presumably regulatory) areas close to known pigmentation genes. Genotype-phenotype associations can vary depending on patch colour and are stronger for eumelanin pigmentation, suggesting eumelanin production is tightly regulated. Although some genes are involved in colour variation in multiple patches, in some cases, the SNPs associated with colour changes in different patches segregate spatially. These results suggest that coloration patterning in capuchinos is generated by the modular combination of variants that regulate multiple melanogenesis genes, a mechanism that may have promoted this rapid radiation.
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