Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)

Autores
Edelaar, Pim; Donazar, José; Soriano, Matías; Santillan, Miguel Angel; Gonzalez Zevallos, Diego Ricardo; Garcia Borboroglu, Jorge Pablo; Lisnizer, Nora; Gatto, Alejandro Javier; Agüero, Maria Laura; Passera, Carlos A.; Ebert, Luis Augusto; Bertellotti, Néstor Marcelo; Blanco, Guillermo; Abril, Monica; Escudero, Graciela; Quintana, Flavio Roberto
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Southern caracaras are medium-sized raptors with a large range stretching to the southern tip of South America. An aberrant, leucistic plumage is found commonly along the coast of Chubut Province (Patagonia, Argentina). Leucistic birds do not produce dark melanin in their feathers. However, they are not albinos because their eyes are not red. No genetic studies of caracara plumages are known. Hypothesis: The high frequency of leucistic birds in Chubut Province arises because of natural selection. Methods: Map the distribution of leucistic individuals relative to normal individuals. Combine a variety of anecdotal natural history observations, collected over 20 years, into a logical inference. Observations: Leucistic caracaras were found only along a 250-km stretch of rocky oceanic islands and continental outcrops with large seabird colonies in Chubut Province. In the rest of their range, Southern caracaras have dark plumage. Where they do occur, leucistic birds are frequent and co-occur with dark-plumaged birds. Intermediate individuals, presumably heterozygotes, exist. Leucism is not related to age or sex. Leucistic individuals are restricted to a particular habitat. Gene flow has not homogenized the coastal and inland populations. Results: Leucism is not simply due to inbreeding producing more homozygous individuals. Leucism is not due to genetic drift. Leucism is not an environmental effect on individual physiology or development. Leucism is not a transient (plastic) phenomenon. Where they occur frequently, leucistic Southern caracaras are apparently favoured by natural selection, either directly or by pleiotropy.
Fil: Edelaar, Pim. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Donazar, José. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Soriano, Matías. Estación Científica de Bahía Bustamante; Argentina
Fil: Santillán, Miguel Angel. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Recursos Naturales; Argentina
Fil: Gonzalez Zevallos, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gatto, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Agüero, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Passera, Carlos A.. Causana Viajes; Argentina
Fil: Ebert, Luis Augusto. Centro Universitario Leonardo Da Vinci (uniasselvi); Brasil
Fil: Bertellotti, Néstor Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Cientificas. Museo Nacional de Ciencias Naturales; España
Fil: Abril, Monica. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Escudero, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
Southern Caracara
Leucistic Plumage
Patagonia
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/93717
Acceder
id CONICETDig_d3ed2ded6763cfae1741892bffd9f172
oai_identifier_str oai:ri.conicet.gov.ar:11336/93717
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)Edelaar, PimDonazar, JoséSoriano, MatíasSantillan, Miguel AngelGonzalez Zevallos, Diego RicardoGarcia Borboroglu, Jorge PabloLisnizer, NoraGatto, Alejandro JavierAgüero, Maria LauraPassera, Carlos A.Ebert, Luis AugustoBertellotti, Néstor MarceloBlanco, GuillermoAbril, MonicaEscudero, GracielaQuintana, Flavio RobertoSouthern CaracaraLeucistic PlumagePatagoniahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Background: Southern caracaras are medium-sized raptors with a large range stretching to the southern tip of South America. An aberrant, leucistic plumage is found commonly along the coast of Chubut Province (Patagonia, Argentina). Leucistic birds do not produce dark melanin in their feathers. However, they are not albinos because their eyes are not red. No genetic studies of caracara plumages are known. Hypothesis: The high frequency of leucistic birds in Chubut Province arises because of natural selection. Methods: Map the distribution of leucistic individuals relative to normal individuals. Combine a variety of anecdotal natural history observations, collected over 20 years, into a logical inference. Observations: Leucistic caracaras were found only along a 250-km stretch of rocky oceanic islands and continental outcrops with large seabird colonies in Chubut Province. In the rest of their range, Southern caracaras have dark plumage. Where they do occur, leucistic birds are frequent and co-occur with dark-plumaged birds. Intermediate individuals, presumably heterozygotes, exist. Leucism is not related to age or sex. Leucistic individuals are restricted to a particular habitat. Gene flow has not homogenized the coastal and inland populations. Results: Leucism is not simply due to inbreeding producing more homozygous individuals. Leucism is not due to genetic drift. Leucism is not an environmental effect on individual physiology or development. Leucism is not a transient (plastic) phenomenon. Where they occur frequently, leucistic Southern caracaras are apparently favoured by natural selection, either directly or by pleiotropy.Fil: Edelaar, Pim. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Donazar, José. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Soriano, Matías. Estación Científica de Bahía Bustamante; ArgentinaFil: Santillán, Miguel Angel. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Recursos Naturales; ArgentinaFil: Gonzalez Zevallos, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Gatto, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Agüero, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Passera, Carlos A.. Causana Viajes; ArgentinaFil: Ebert, Luis Augusto. Centro Universitario Leonardo Da Vinci (uniasselvi); BrasilFil: Bertellotti, Néstor Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Blanco, Guillermo. Consejo Superior de Investigaciones Cientificas. Museo Nacional de Ciencias Naturales; EspañaFil: Abril, Monica. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Escudero, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaEvolutionary Ecology2011-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93717Edelaar, Pim; Donazar, José; Soriano, Matías; Santillan, Miguel Angel; Gonzalez Zevallos, Diego Ricardo; et al.; Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae); Evolutionary Ecology; Evolutionary Ecology Research; 13; 5-2011; 187-1961522-0613CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.evolutionary-ecology.com/abstracts/v13/2639.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:52Zoai:ri.conicet.gov.ar:11336/93717instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:14:52.506CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
title Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
spellingShingle Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
Edelaar, Pim
Southern Caracara
Leucistic Plumage
Patagonia
title_short Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
title_full Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
title_fullStr Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
title_full_unstemmed Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
title_sort Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae)
dc.creator.none.fl_str_mv Edelaar, Pim
Donazar, José
Soriano, Matías
Santillan, Miguel Angel
Gonzalez Zevallos, Diego Ricardo
Garcia Borboroglu, Jorge Pablo
Lisnizer, Nora
Gatto, Alejandro Javier
Agüero, Maria Laura
Passera, Carlos A.
Ebert, Luis Augusto
Bertellotti, Néstor Marcelo
Blanco, Guillermo
Abril, Monica
Escudero, Graciela
Quintana, Flavio Roberto
author Edelaar, Pim
author_facet Edelaar, Pim
Donazar, José
Soriano, Matías
Santillan, Miguel Angel
Gonzalez Zevallos, Diego Ricardo
Garcia Borboroglu, Jorge Pablo
Lisnizer, Nora
Gatto, Alejandro Javier
Agüero, Maria Laura
Passera, Carlos A.
Ebert, Luis Augusto
Bertellotti, Néstor Marcelo
Blanco, Guillermo
Abril, Monica
Escudero, Graciela
Quintana, Flavio Roberto
author_role author
author2 Donazar, José
Soriano, Matías
Santillan, Miguel Angel
Gonzalez Zevallos, Diego Ricardo
Garcia Borboroglu, Jorge Pablo
Lisnizer, Nora
Gatto, Alejandro Javier
Agüero, Maria Laura
Passera, Carlos A.
Ebert, Luis Augusto
Bertellotti, Néstor Marcelo
Blanco, Guillermo
Abril, Monica
Escudero, Graciela
Quintana, Flavio Roberto
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Southern Caracara
Leucistic Plumage
Patagonia
topic Southern Caracara
Leucistic Plumage
Patagonia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Background: Southern caracaras are medium-sized raptors with a large range stretching to the southern tip of South America. An aberrant, leucistic plumage is found commonly along the coast of Chubut Province (Patagonia, Argentina). Leucistic birds do not produce dark melanin in their feathers. However, they are not albinos because their eyes are not red. No genetic studies of caracara plumages are known. Hypothesis: The high frequency of leucistic birds in Chubut Province arises because of natural selection. Methods: Map the distribution of leucistic individuals relative to normal individuals. Combine a variety of anecdotal natural history observations, collected over 20 years, into a logical inference. Observations: Leucistic caracaras were found only along a 250-km stretch of rocky oceanic islands and continental outcrops with large seabird colonies in Chubut Province. In the rest of their range, Southern caracaras have dark plumage. Where they do occur, leucistic birds are frequent and co-occur with dark-plumaged birds. Intermediate individuals, presumably heterozygotes, exist. Leucism is not related to age or sex. Leucistic individuals are restricted to a particular habitat. Gene flow has not homogenized the coastal and inland populations. Results: Leucism is not simply due to inbreeding producing more homozygous individuals. Leucism is not due to genetic drift. Leucism is not an environmental effect on individual physiology or development. Leucism is not a transient (plastic) phenomenon. Where they occur frequently, leucistic Southern caracaras are apparently favoured by natural selection, either directly or by pleiotropy.
Fil: Edelaar, Pim. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Donazar, José. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Soriano, Matías. Estación Científica de Bahía Bustamante; Argentina
Fil: Santillán, Miguel Angel. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Recursos Naturales; Argentina
Fil: Gonzalez Zevallos, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Lisnizer, Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gatto, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Agüero, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Passera, Carlos A.. Causana Viajes; Argentina
Fil: Ebert, Luis Augusto. Centro Universitario Leonardo Da Vinci (uniasselvi); Brasil
Fil: Bertellotti, Néstor Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Cientificas. Museo Nacional de Ciencias Naturales; España
Fil: Abril, Monica. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Escudero, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description Background: Southern caracaras are medium-sized raptors with a large range stretching to the southern tip of South America. An aberrant, leucistic plumage is found commonly along the coast of Chubut Province (Patagonia, Argentina). Leucistic birds do not produce dark melanin in their feathers. However, they are not albinos because their eyes are not red. No genetic studies of caracara plumages are known. Hypothesis: The high frequency of leucistic birds in Chubut Province arises because of natural selection. Methods: Map the distribution of leucistic individuals relative to normal individuals. Combine a variety of anecdotal natural history observations, collected over 20 years, into a logical inference. Observations: Leucistic caracaras were found only along a 250-km stretch of rocky oceanic islands and continental outcrops with large seabird colonies in Chubut Province. In the rest of their range, Southern caracaras have dark plumage. Where they do occur, leucistic birds are frequent and co-occur with dark-plumaged birds. Intermediate individuals, presumably heterozygotes, exist. Leucism is not related to age or sex. Leucistic individuals are restricted to a particular habitat. Gene flow has not homogenized the coastal and inland populations. Results: Leucism is not simply due to inbreeding producing more homozygous individuals. Leucism is not due to genetic drift. Leucism is not an environmental effect on individual physiology or development. Leucism is not a transient (plastic) phenomenon. Where they occur frequently, leucistic Southern caracaras are apparently favoured by natural selection, either directly or by pleiotropy.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/93717
Edelaar, Pim; Donazar, José; Soriano, Matías; Santillan, Miguel Angel; Gonzalez Zevallos, Diego Ricardo; et al.; Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae); Evolutionary Ecology; Evolutionary Ecology Research; 13; 5-2011; 187-196
1522-0613
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93717
identifier_str_mv Edelaar, Pim; Donazar, José; Soriano, Matías; Santillan, Miguel Angel; Gonzalez Zevallos, Diego Ricardo; et al.; Apparent selective advantage of leucism in a coastal population of Southern caracaras (Falconidae); Evolutionary Ecology; Evolutionary Ecology Research; 13; 5-2011; 187-196
1522-0613
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.evolutionary-ecology.com/abstracts/v13/2639.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Evolutionary Ecology
publisher.none.fl_str_mv Evolutionary Ecology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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