期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 288, 期 1943, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rspb.2020.1805
关键词
coloration; pigmentation; association mapping; hybrid zone; northern flicker; Colaptes auratus
资金
- Cornell Lab of Ornithology Athena Fund
- Garden Club of America Frances M. Peacock Scholarship
- Cornell University EEB Richard G. Harrison Fund
- Cornell University EEB Betty Miller Francis Fund
- Cornell University Andrew W. Mellon Student Research Grant
- Cornell Sigma Xi chapter
- US National Science Foundation Graduate Research Fellowship Program [DGE-1144153]
- AAUW American Dissertation Fellowship
This study identified the genetic basis of six distinct plumage patches in North American woodpeckers, revealing that color differences could be created through selection acting on novel combinations of coloration genes.
Coloration is an important target of both natural and sexual selection. Discovering the genetic basis of colour differences can help us to understand how this visually striking phenotype evolves. Hybridizing taxa with both clear colour differences and shallow genomic divergences are unusually tractable for associating coloration phenotypes with their causal genotypes. Here, we leverage the extensive admixture between two common North American woodpeckers-yellow-shafted and red-shafted flickers-to identify the genomic bases of six distinct plumage patches involving both melanin and carotenoid pigments. Comparisons between flickers across approximately 7.25 million genome-wide SNPs show that these two forms differ at only a small proportion of the genome (mean F-ST = 0.008). Within the few highly differentiated genomic regions, we identify 368 SNPs significantly associated with four of the six plumage patches. These SNPs are linked to multiple genes known to be involved in melanin and carotenoid pigmentation. For example, a gene (CYP2J19) known to cause yellow to red colour transitions in other birds is strongly associated with the yellow versus red differences in the wing and tail feathers of these flickers. Additionally, our analyses suggest novel links between known melanin genes and carotenoid coloration. Our finding of patch-specific control of plumage coloration adds to the growing body of literature suggesting colour diversity in animals could be created through selection acting on novel combinations of coloration genes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据