Rapid phenotypic evolution during incipient speciation in a continental avian radiation

Adaptive radiations have helped shape how we view animal speciation, particularly classic examples such as Darwin's finches, Hawaiian fruitflies and African Great Lakes cichlids. These 'island' radiations are comparatively recent, making them particularly interesting because the mecha...

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Autores principales:	Campagna, Leonardo, Benites, María del Pilar, Lijtmaer, Darío Alejandro, Di Giacomo, Adrián Santiago, Tubaro, Pablo Luis
Publicado:	2012
Materias:	Hybridization Neotropical birds Phenotypic divergence Recent radiation Speciation adaptive radiation coalescence demography fly genetic analysis genetic marker habitat type homogeneity hybridization introgression mitochondrial DNA molecular analysis passerine phenotype phenotypic plasticity plumage population distribution speciation (biology) vocalization Hawaii [(ISL) Hawaiian Islands] Hawaii [United States] Hawaiian Islands United States Animalia Aves Cichlidae Fringillidae Sporophila
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09628452_v279_n1734_p1847_Campagna http://hdl.handle.net/20.500.12110/paper_09628452_v279_n1734_p1847_Campagna
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09628452_v279_n1734_p1847_Campagna
record_format	dspace
spelling	paper:paper_09628452_v279_n1734_p1847_Campagna2023-06-08T15:58:06Z Rapid phenotypic evolution during incipient speciation in a continental avian radiation Campagna, Leonardo Benites, María del Pilar Lijtmaer, Darío Alejandro Di Giacomo, Adrián Santiago Tubaro, Pablo Luis Hybridization Neotropical birds Phenotypic divergence Recent radiation Speciation adaptive radiation coalescence demography fly genetic analysis genetic marker habitat type homogeneity hybridization introgression mitochondrial DNA molecular analysis passerine phenotype phenotypic plasticity plumage population distribution speciation (biology) vocalization Hawaii [(ISL) Hawaiian Islands] Hawaii [United States] Hawaiian Islands United States Animalia Aves Cichlidae Fringillidae Sporophila Adaptive radiations have helped shape how we view animal speciation, particularly classic examples such as Darwin's finches, Hawaiian fruitflies and African Great Lakes cichlids. These 'island' radiations are comparatively recent, making them particularly interesting because the mechanisms that caused diversification are still in motion. Here, we identify a new case of a recent bird radiation within a continentally distributed species group; the capuchino seedeaters comprise 11 Sporophila species originally described on the basis of differences in plumage colour and pattern in adult males. We use molecular data together with analyses of male plumage and vocalizations to understand species limits of the group. We find marked phenotypic variation despite lack of mitochondrial DNA monophyly and few differences in other putatively neutral nuclear markers. This finding is consistent with the group having undergone a recent radiation beginning in the Pleistocene, leaving genetic signatures of incomplete lineage sorting, introgressive hybridization and demographic expansions.We argue that this apparent uncoupling between neutral DNA homogeneity and phenotypic diversity is expected for a recent group within the framework of coalescent theory. Finally, we discuss how the ecology of open habitats in South America during the Pleistocene could have helped promote this unique and ongoing radiation. © 2012 The Royal Society. Fil:Campagna, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Benites, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lijtmaer, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Di Giacomo, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tubaro, P.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09628452_v279_n1734_p1847_Campagna http://hdl.handle.net/20.500.12110/paper_09628452_v279_n1734_p1847_Campagna
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Hybridization Neotropical birds Phenotypic divergence Recent radiation Speciation adaptive radiation coalescence demography fly genetic analysis genetic marker habitat type homogeneity hybridization introgression mitochondrial DNA molecular analysis passerine phenotype phenotypic plasticity plumage population distribution speciation (biology) vocalization Hawaii [(ISL) Hawaiian Islands] Hawaii [United States] Hawaiian Islands United States Animalia Aves Cichlidae Fringillidae Sporophila
spellingShingle	Hybridization Neotropical birds Phenotypic divergence Recent radiation Speciation adaptive radiation coalescence demography fly genetic analysis genetic marker habitat type homogeneity hybridization introgression mitochondrial DNA molecular analysis passerine phenotype phenotypic plasticity plumage population distribution speciation (biology) vocalization Hawaii [(ISL) Hawaiian Islands] Hawaii [United States] Hawaiian Islands United States Animalia Aves Cichlidae Fringillidae Sporophila Campagna, Leonardo Benites, María del Pilar Lijtmaer, Darío Alejandro Di Giacomo, Adrián Santiago Tubaro, Pablo Luis Rapid phenotypic evolution during incipient speciation in a continental avian radiation
topic_facet	Hybridization Neotropical birds Phenotypic divergence Recent radiation Speciation adaptive radiation coalescence demography fly genetic analysis genetic marker habitat type homogeneity hybridization introgression mitochondrial DNA molecular analysis passerine phenotype phenotypic plasticity plumage population distribution speciation (biology) vocalization Hawaii [(ISL) Hawaiian Islands] Hawaii [United States] Hawaiian Islands United States Animalia Aves Cichlidae Fringillidae Sporophila
description	Adaptive radiations have helped shape how we view animal speciation, particularly classic examples such as Darwin's finches, Hawaiian fruitflies and African Great Lakes cichlids. These 'island' radiations are comparatively recent, making them particularly interesting because the mechanisms that caused diversification are still in motion. Here, we identify a new case of a recent bird radiation within a continentally distributed species group; the capuchino seedeaters comprise 11 Sporophila species originally described on the basis of differences in plumage colour and pattern in adult males. We use molecular data together with analyses of male plumage and vocalizations to understand species limits of the group. We find marked phenotypic variation despite lack of mitochondrial DNA monophyly and few differences in other putatively neutral nuclear markers. This finding is consistent with the group having undergone a recent radiation beginning in the Pleistocene, leaving genetic signatures of incomplete lineage sorting, introgressive hybridization and demographic expansions.We argue that this apparent uncoupling between neutral DNA homogeneity and phenotypic diversity is expected for a recent group within the framework of coalescent theory. Finally, we discuss how the ecology of open habitats in South America during the Pleistocene could have helped promote this unique and ongoing radiation. © 2012 The Royal Society.
author	Campagna, Leonardo Benites, María del Pilar Lijtmaer, Darío Alejandro Di Giacomo, Adrián Santiago Tubaro, Pablo Luis
author_facet	Campagna, Leonardo Benites, María del Pilar Lijtmaer, Darío Alejandro Di Giacomo, Adrián Santiago Tubaro, Pablo Luis
author_sort	Campagna, Leonardo
title	Rapid phenotypic evolution during incipient speciation in a continental avian radiation
title_short	Rapid phenotypic evolution during incipient speciation in a continental avian radiation
title_full	Rapid phenotypic evolution during incipient speciation in a continental avian radiation
title_fullStr	Rapid phenotypic evolution during incipient speciation in a continental avian radiation
title_full_unstemmed	Rapid phenotypic evolution during incipient speciation in a continental avian radiation
title_sort	rapid phenotypic evolution during incipient speciation in a continental avian radiation
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09628452_v279_n1734_p1847_Campagna http://hdl.handle.net/20.500.12110/paper_09628452_v279_n1734_p1847_Campagna
work_keys_str_mv	AT campagnaleonardo rapidphenotypicevolutionduringincipientspeciationinacontinentalavianradiation AT benitesmariadelpilar rapidphenotypicevolutionduringincipientspeciationinacontinentalavianradiation AT lijtmaerdarioalejandro rapidphenotypicevolutionduringincipientspeciationinacontinentalavianradiation AT digiacomoadriansantiago rapidphenotypicevolutionduringincipientspeciationinacontinentalavianradiation AT tubaropabloluis rapidphenotypicevolutionduringincipientspeciationinacontinentalavianradiation
_version_	1768545426528534528

Rapid phenotypic evolution during incipient speciation in a continental avian radiation

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