GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00001331
Main curator
Prigent
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Golden-winged warbler
Trait State in Taxon B
Blue-winged warbler
Ancestral State
Unknown
Taxonomic Status
Taxon A
Common Name
Golden-winged warbler
Synonyms
Motacilla chrysoptera; Golden-winged warbler; Motacilla chrysoptera Linnaeus 1766; Vermivora chrysoptera (Linnaeus, 1766)
Rank
species
Lineage
Show more ... etrapodomorpha; Tetrapoda; Amniota; Sauropsida; Sauria; Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda; Coelurosauria; Aves; Neognathae; Passeriformes; Passeroidea; Parulidae; Vermivora
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
blue-winged warbler
Synonyms
Vermivora pinus; blue-winged warbler; Vermivora cyanoptera (Olson & Reveal, 2009)
Rank
species
Lineage
Show more ... etrapodomorpha; Tetrapoda; Amniota; Sauropsida; Sauria; Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda; Coelurosauria; Aves; Neognathae; Passeriformes; Passeroidea; Parulidae; Vermivora
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
unknown - the divergent region falls in the 5prime region that is directly upstream of the associated coding region
Experimental Evidence
Authors
Toews DP; Taylor SA; Vallender R; Brelsford A; Butcher BG; Messer PW; Lovette IJ
Abstract
When related taxa hybridize extensively, their genomes may become increasingly homogenized over time. This mixing via hybridization creates conservation challenges when it reduces genetic or phenotypic diversity and when it endangers previously distinct species via genetic swamping [1]. However, hybridization also facilitates admixture mapping of traits that distinguish each species and the associated genes that maintain distinctiveness despite ongoing gene flow [2]. We address these dual aspects of hybridization in the golden-winged/blue-winged warbler complex, two phenotypically divergent warblers that are indistinguishable using traditional molecular markers and that draw substantial conservation attention [3-5]. Whole-genome comparisons show that differentiation is extremely low: only six small genomic regions exhibit strong differences. Four of these divergence peaks occur in proximity to genes known to be involved in feather development or pigmentation: agouti signaling protein (ASIP), follistatin (FST), ecodysplasin (EDA), wingless-related integration site (Wnt), and beta-carotene oxygenase 2 (BCO2). Throat coloration-the most striking plumage difference between these warblers-is perfectly associated with the promoter region of agouti, and genotypes at this locus obey simple Mendelian recessive inheritance of the black-throated phenotype characteristic of golden-winged warblers. The more general pattern of genomic similarity between these warblers likely results from a protracted period of hybridization, contradicting the broadly accepted hypothesis that admixture results from solely anthropogenic habitat change in the past two centuries [4]. Considered in concert, these results are relevant to both the genetic architecture of avian feather pigmentation and the evolutionary history and conservation challenges associated with these declining songbirds.

Copyright © 2016 Elsevier Ltd. All rights reserved.
Additional References
RELATED GEPHE
Related Haplotypes
No matches found.
COMMENTS
the two taxa are possibly the same species (subspecies or races). Among six divergent genomic regions identified by SNP ASIP is a candidate gene supposed to be involved in the throat color (black or yellow-white)
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