Hybridization promotes color polymorphism in the aposematic harlequin poison frog, Oophaga histrionica

Iliana Medina, Ian J. Wang, Camilo Salazar, Adolfo Amézquita

Resultado de la investigación: Contribución a RevistaArtículo

17 Citas (Scopus)

Resumen

Whether hybridization can be a mechanism that drives phenotypic diversity is a widely debated topic in evolutionary biology. In poison frogs (Dendrobatidae), assortative mating has been invoked to explain how new color morphs persist despite the expected homogenizing effects of natural selection. Here, we tested the complementary hypothesis that new morphs arise through hybridization between different color morphs. Specifically, we (1) reconstructed the phylogenetic relationships among the studied populations of a dart-poison frog to provide an evolutionary framework, (2) tested whether microsatellite allele frequencies of one putative hybrid population of the polymorphic frog O. histrionica are intermediate between O. histrionica and O. lehmanni, and (3) conducted mate-choice experiments to test whether putatively intermediate females prefer homotypic males over males from the other two populations. Our findings are compatible with a hybrid origin for the new morph and emphasize the possibility of hybridization as a mechanism generating variation in polymorphic species. Moreover, because coloration in poison frogs is aposematic and should be heavily constrained, our findings suggest that hybridization can produce phenotypic novelty even in systems where phenotypes are subject to strong stabilizing selection. © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
Idioma originalEnglish (US)
Páginas (desde-hasta)4388-4400
Número de páginas13
PublicaciónEcology and Evolution
DOI
EstadoPublished - nov 1 2013

Huella dactilar

frog
frogs
polymorphism
hybridization
morphs
genetic polymorphism
color
assortative mating
evolutionary biology
mate choice
mating behavior
natural selection
gene frequency
phenotype
allele
microsatellite repeats
ecology
phylogenetics
Biological Sciences
Oophaga

Citar esto

@article{86c3dbb32b3a4c77bb8f9f4f9d9076c8,
title = "Hybridization promotes color polymorphism in the aposematic harlequin poison frog, Oophaga histrionica",
abstract = "Whether hybridization can be a mechanism that drives phenotypic diversity is a widely debated topic in evolutionary biology. In poison frogs (Dendrobatidae), assortative mating has been invoked to explain how new color morphs persist despite the expected homogenizing effects of natural selection. Here, we tested the complementary hypothesis that new morphs arise through hybridization between different color morphs. Specifically, we (1) reconstructed the phylogenetic relationships among the studied populations of a dart-poison frog to provide an evolutionary framework, (2) tested whether microsatellite allele frequencies of one putative hybrid population of the polymorphic frog O. histrionica are intermediate between O. histrionica and O. lehmanni, and (3) conducted mate-choice experiments to test whether putatively intermediate females prefer homotypic males over males from the other two populations. Our findings are compatible with a hybrid origin for the new morph and emphasize the possibility of hybridization as a mechanism generating variation in polymorphic species. Moreover, because coloration in poison frogs is aposematic and should be heavily constrained, our findings suggest that hybridization can produce phenotypic novelty even in systems where phenotypes are subject to strong stabilizing selection. {\circledC} 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.",
author = "Iliana Medina and Wang, {Ian J.} and Camilo Salazar and Adolfo Am{\'e}zquita",
year = "2013",
month = "11",
day = "1",
doi = "10.1002/ece3.794",
language = "English (US)",
pages = "4388--4400",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Ltd",

}

Hybridization promotes color polymorphism in the aposematic harlequin poison frog, Oophaga histrionica. / Medina, Iliana; Wang, Ian J.; Salazar, Camilo; Amézquita, Adolfo.

En: Ecology and Evolution, 01.11.2013, p. 4388-4400.

Resultado de la investigación: Contribución a RevistaArtículo

TY - JOUR

T1 - Hybridization promotes color polymorphism in the aposematic harlequin poison frog, Oophaga histrionica

AU - Medina, Iliana

AU - Wang, Ian J.

AU - Salazar, Camilo

AU - Amézquita, Adolfo

PY - 2013/11/1

Y1 - 2013/11/1

N2 - Whether hybridization can be a mechanism that drives phenotypic diversity is a widely debated topic in evolutionary biology. In poison frogs (Dendrobatidae), assortative mating has been invoked to explain how new color morphs persist despite the expected homogenizing effects of natural selection. Here, we tested the complementary hypothesis that new morphs arise through hybridization between different color morphs. Specifically, we (1) reconstructed the phylogenetic relationships among the studied populations of a dart-poison frog to provide an evolutionary framework, (2) tested whether microsatellite allele frequencies of one putative hybrid population of the polymorphic frog O. histrionica are intermediate between O. histrionica and O. lehmanni, and (3) conducted mate-choice experiments to test whether putatively intermediate females prefer homotypic males over males from the other two populations. Our findings are compatible with a hybrid origin for the new morph and emphasize the possibility of hybridization as a mechanism generating variation in polymorphic species. Moreover, because coloration in poison frogs is aposematic and should be heavily constrained, our findings suggest that hybridization can produce phenotypic novelty even in systems where phenotypes are subject to strong stabilizing selection. © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

AB - Whether hybridization can be a mechanism that drives phenotypic diversity is a widely debated topic in evolutionary biology. In poison frogs (Dendrobatidae), assortative mating has been invoked to explain how new color morphs persist despite the expected homogenizing effects of natural selection. Here, we tested the complementary hypothesis that new morphs arise through hybridization between different color morphs. Specifically, we (1) reconstructed the phylogenetic relationships among the studied populations of a dart-poison frog to provide an evolutionary framework, (2) tested whether microsatellite allele frequencies of one putative hybrid population of the polymorphic frog O. histrionica are intermediate between O. histrionica and O. lehmanni, and (3) conducted mate-choice experiments to test whether putatively intermediate females prefer homotypic males over males from the other two populations. Our findings are compatible with a hybrid origin for the new morph and emphasize the possibility of hybridization as a mechanism generating variation in polymorphic species. Moreover, because coloration in poison frogs is aposematic and should be heavily constrained, our findings suggest that hybridization can produce phenotypic novelty even in systems where phenotypes are subject to strong stabilizing selection. © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

U2 - 10.1002/ece3.794

DO - 10.1002/ece3.794

M3 - Article

SP - 4388

EP - 4400

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

ER -