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A multispecies BCO2 beak color polymorphism in the Darwin's finch radiation

Enbody, Erik D. and Sprehn, C. Grace and Abzhanov, Arhat and Bi, Huijuan and Dobreva, Mariya P. and Osborne, Owen G. and Rubin, Carl-Johan and Grant, Peter R. and Grant, B. Rosemary and Andersson, Leif (2021). A multispecies BCO2 beak color polymorphism in the Darwin's finch radiation. Current Biology. 31 , 5597-+
[Research article]

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Abstract

Carotenoid-based polymorphisms are widespread in populations of birds, fish, and reptiles,(1) but generally little is known about the factors affecting their maintenance in populations.(2) We report a combined field and molecular-genetic investigation of a nestling beak color polymorphism in Darwin's finches. Beaks are pink or yellow, and yellow is recessive.(3) Here we show that the polymorphism arose in the Galapagos half a million years ago through a mutation associated with regulatory change in the BCO2 gene and is shared by 14 descendant species. The polymorphism is probably a balanced polymorphism, maintained by ecolog- ical selection associated with survival and diet. In cactus finches, the frequency of the yellow genotype is correlated with cactus fruit abundance and greater hatching success and may be altered by introgressive hybridization. Polymorphisms that are hidden as adults, as here, may be far more common than is currently recognized, and contribute to diversification in ways that are yet to be discovered.

Authors/Creators:Enbody, Erik D. and Sprehn, C. Grace and Abzhanov, Arhat and Bi, Huijuan and Dobreva, Mariya P. and Osborne, Owen G. and Rubin, Carl-Johan and Grant, Peter R. and Grant, B. Rosemary and Andersson, Leif
Title:A multispecies BCO2 beak color polymorphism in the Darwin's finch radiation
Series Name/Journal:Current Biology
Year of publishing :2021
Volume:31
Page range:5597-+
Number of Pages:16
Publisher:CELL PRESS
ISSN:0960-9822
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
URN:NBN:urn:nbn:se:slu:epsilon-p-115214
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115214
Additional ID:
Type of IDID
DOI10.1016/j.cub.2021.09.085
Web of Science (WoS)000734318000009
ID Code:26668
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Breeding and Genetics
Deposited By: SLUpub Connector
Deposited On:10 Jan 2022 12:25
Metadata Last Modified:10 Jan 2022 12:31

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