The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Pan...

Autores
Haag, Taiana; Santos, Analisie S.; Sana, Dênis A.; Morato, Ronaldo G.; Cullen Jr., Laury; Crawshaw Jr., Peter G.; de Angelo, Carlos Daniel; Di Bitetti, Mario Santiago; Salzano, Francisco M.; Eizirik, Eduardo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Habitat fragmentation may disrupt original patterns of gene flow and lead to drift‐induced differentiation among local population units. Top predators such as the jaguar may be particularly susceptible to this effect, given their low population densities, leading to small effective sizes in local fragments. On the other hand, the jaguar’s high dispersal capabilities and relatively long generation time might counteract this process, slowing the effect of drift on local populations over the time frame of decades or centuries. In this study, we have addressed this issue by investigating the genetic structure of jaguars in a recently fragmented Atlantic Forest region, aiming to test whether loss of diversity and differentiation among local populations are detectable, and whether they can be attributed to the recent effect of drift. We used 13 microsatellite loci to characterize the genetic diversity present in four remnant populations, and observed marked differentiation among them, with evidence of recent allelic loss in local areas. Although some migrant and admixed individuals were identified, our results indicate that recent large‐scale habitat removal and fragmentation among these areas has been sufficiently strong to promote differentiation induced by drift and loss of alleles at each site. Low estimated effective sizes supported the inference that genetic drift could have caused this effect within a short time frame. These results indicate that jaguars’ ability to effectively disperse across the human‐dominated landscapes that separate the fragments is currently very limited, and that each fragment contains a small, isolated population that is already suffering from the effects of genetic drift.
Fil: Haag, Taiana. Universidade Federal do Rio Grande do Sul; Brasil. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Santos, Analisie S.. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Sana, Dênis A.. Instituto Pró-Carnívoros; Brasil
Fil: Morato, Ronaldo G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; Argentina. Instituto Pró-Carnívoros; Brasil
Fil: Cullen Jr., Laury. Instituto de Pesquisas Ecológicas; Brasil
Fil: Crawshaw Jr., Peter G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; Argentina
Fil: de Angelo, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; Argentina
Fil: Di Bitetti, Mario Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; Argentina
Fil: Salzano, Francisco M.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Eizirik, Eduardo. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Materia
Panthera Onca
Atlantic Forest
Genetic Diversity
Population Structure
Carnivora
Genetic Drift
Neotropical
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:11336/56414
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/56414
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)Haag, TaianaSantos, Analisie S.Sana, Dênis A.Morato, Ronaldo G.Cullen Jr., LauryCrawshaw Jr., Peter G.de Angelo, Carlos DanielDi Bitetti, Mario SantiagoSalzano, Francisco M.Eizirik, EduardoPanthera OncaAtlantic ForestGenetic DiversityPopulation StructureCarnivoraGenetic DriftNeotropicalhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Habitat fragmentation may disrupt original patterns of gene flow and lead to drift‐induced differentiation among local population units. Top predators such as the jaguar may be particularly susceptible to this effect, given their low population densities, leading to small effective sizes in local fragments. On the other hand, the jaguar’s high dispersal capabilities and relatively long generation time might counteract this process, slowing the effect of drift on local populations over the time frame of decades or centuries. In this study, we have addressed this issue by investigating the genetic structure of jaguars in a recently fragmented Atlantic Forest region, aiming to test whether loss of diversity and differentiation among local populations are detectable, and whether they can be attributed to the recent effect of drift. We used 13 microsatellite loci to characterize the genetic diversity present in four remnant populations, and observed marked differentiation among them, with evidence of recent allelic loss in local areas. Although some migrant and admixed individuals were identified, our results indicate that recent large‐scale habitat removal and fragmentation among these areas has been sufficiently strong to promote differentiation induced by drift and loss of alleles at each site. Low estimated effective sizes supported the inference that genetic drift could have caused this effect within a short time frame. These results indicate that jaguars’ ability to effectively disperse across the human‐dominated landscapes that separate the fragments is currently very limited, and that each fragment contains a small, isolated population that is already suffering from the effects of genetic drift.Fil: Haag, Taiana. Universidade Federal do Rio Grande do Sul; Brasil. Pontificia Universidade Católica do Rio Grande do Sul; BrasilFil: Santos, Analisie S.. Pontificia Universidade Católica do Rio Grande do Sul; BrasilFil: Sana, Dênis A.. Instituto Pró-Carnívoros; BrasilFil: Morato, Ronaldo G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; Argentina. Instituto Pró-Carnívoros; BrasilFil: Cullen Jr., Laury. Instituto de Pesquisas Ecológicas; BrasilFil: Crawshaw Jr., Peter G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; ArgentinaFil: de Angelo, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; ArgentinaFil: Di Bitetti, Mario Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; ArgentinaFil: Salzano, Francisco M.. Universidade Federal do Rio Grande do Sul; BrasilFil: Eizirik, Eduardo. Pontificia Universidade Católica do Rio Grande do Sul; BrasilWiley Blackwell Publishing, Inc2010-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/56414Haag, Taiana; Santos, Analisie S.; Sana, Dênis A.; Morato, Ronaldo G.; Cullen Jr., Laury; et al.; The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca); Wiley Blackwell Publishing, Inc; Molecular Ecology; 19; 22; 8-2010; 4906-49210962-10831365-294XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-294X.2010.04856.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-294X.2010.04856.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:16Zoai:ri.conicet.gov.ar:11336/56414instacron: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 10:37:16.487CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
title The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
spellingShingle The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
Haag, Taiana
Panthera Onca
Atlantic Forest
Genetic Diversity
Population Structure
Carnivora
Genetic Drift
Neotropical
title_short The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
title_full The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
title_fullStr The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
title_full_unstemmed The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
title_sort The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)
dc.creator.none.fl_str_mv Haag, Taiana
Santos, Analisie S.
Sana, Dênis A.
Morato, Ronaldo G.
Cullen Jr., Laury
Crawshaw Jr., Peter G.
de Angelo, Carlos Daniel
Di Bitetti, Mario Santiago
Salzano, Francisco M.
Eizirik, Eduardo
author Haag, Taiana
author_facet Haag, Taiana
Santos, Analisie S.
Sana, Dênis A.
Morato, Ronaldo G.
Cullen Jr., Laury
Crawshaw Jr., Peter G.
de Angelo, Carlos Daniel
Di Bitetti, Mario Santiago
Salzano, Francisco M.
Eizirik, Eduardo
author_role author
author2 Santos, Analisie S.
Sana, Dênis A.
Morato, Ronaldo G.
Cullen Jr., Laury
Crawshaw Jr., Peter G.
de Angelo, Carlos Daniel
Di Bitetti, Mario Santiago
Salzano, Francisco M.
Eizirik, Eduardo
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Panthera Onca
Atlantic Forest
Genetic Diversity
Population Structure
Carnivora
Genetic Drift
Neotropical
topic Panthera Onca
Atlantic Forest
Genetic Diversity
Population Structure
Carnivora
Genetic Drift
Neotropical
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Habitat fragmentation may disrupt original patterns of gene flow and lead to drift‐induced differentiation among local population units. Top predators such as the jaguar may be particularly susceptible to this effect, given their low population densities, leading to small effective sizes in local fragments. On the other hand, the jaguar’s high dispersal capabilities and relatively long generation time might counteract this process, slowing the effect of drift on local populations over the time frame of decades or centuries. In this study, we have addressed this issue by investigating the genetic structure of jaguars in a recently fragmented Atlantic Forest region, aiming to test whether loss of diversity and differentiation among local populations are detectable, and whether they can be attributed to the recent effect of drift. We used 13 microsatellite loci to characterize the genetic diversity present in four remnant populations, and observed marked differentiation among them, with evidence of recent allelic loss in local areas. Although some migrant and admixed individuals were identified, our results indicate that recent large‐scale habitat removal and fragmentation among these areas has been sufficiently strong to promote differentiation induced by drift and loss of alleles at each site. Low estimated effective sizes supported the inference that genetic drift could have caused this effect within a short time frame. These results indicate that jaguars’ ability to effectively disperse across the human‐dominated landscapes that separate the fragments is currently very limited, and that each fragment contains a small, isolated population that is already suffering from the effects of genetic drift.
Fil: Haag, Taiana. Universidade Federal do Rio Grande do Sul; Brasil. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Santos, Analisie S.. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Sana, Dênis A.. Instituto Pró-Carnívoros; Brasil
Fil: Morato, Ronaldo G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; Argentina. Instituto Pró-Carnívoros; Brasil
Fil: Cullen Jr., Laury. Instituto de Pesquisas Ecológicas; Brasil
Fil: Crawshaw Jr., Peter G.. Centro Nacional de Pesquisa e Conservaçao de Mamíferos Carnívoros; Argentina
Fil: de Angelo, Carlos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; Argentina
Fil: Di Bitetti, Mario Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina. Centro de Investigaciones del Bosque Atlántico; Argentina
Fil: Salzano, Francisco M.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Eizirik, Eduardo. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
description Habitat fragmentation may disrupt original patterns of gene flow and lead to drift‐induced differentiation among local population units. Top predators such as the jaguar may be particularly susceptible to this effect, given their low population densities, leading to small effective sizes in local fragments. On the other hand, the jaguar’s high dispersal capabilities and relatively long generation time might counteract this process, slowing the effect of drift on local populations over the time frame of decades or centuries. In this study, we have addressed this issue by investigating the genetic structure of jaguars in a recently fragmented Atlantic Forest region, aiming to test whether loss of diversity and differentiation among local populations are detectable, and whether they can be attributed to the recent effect of drift. We used 13 microsatellite loci to characterize the genetic diversity present in four remnant populations, and observed marked differentiation among them, with evidence of recent allelic loss in local areas. Although some migrant and admixed individuals were identified, our results indicate that recent large‐scale habitat removal and fragmentation among these areas has been sufficiently strong to promote differentiation induced by drift and loss of alleles at each site. Low estimated effective sizes supported the inference that genetic drift could have caused this effect within a short time frame. These results indicate that jaguars’ ability to effectively disperse across the human‐dominated landscapes that separate the fragments is currently very limited, and that each fragment contains a small, isolated population that is already suffering from the effects of genetic drift.
publishDate 2010
dc.date.none.fl_str_mv 2010-08
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/11336/56414
Haag, Taiana; Santos, Analisie S.; Sana, Dênis A.; Morato, Ronaldo G.; Cullen Jr., Laury; et al.; The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca); Wiley Blackwell Publishing, Inc; Molecular Ecology; 19; 22; 8-2010; 4906-4921
0962-1083
1365-294X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/56414
identifier_str_mv Haag, Taiana; Santos, Analisie S.; Sana, Dênis A.; Morato, Ronaldo G.; Cullen Jr., Laury; et al.; The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca); Wiley Blackwell Publishing, Inc; Molecular Ecology; 19; 22; 8-2010; 4906-4921
0962-1083
1365-294X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-294X.2010.04856.x
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-294X.2010.04856.x
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
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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