Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)

The highly endangered Spanish imperial eagle, Aquila adalberti , has suffered from both population decline and fragmentation during the last century. Here we describe the current genetic status of the population using an extensive sampling of its current distribution range and both mitochondrial con...

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Detalles Bibliográficos
Autores: Martínez-Cruz, Begoña, Godoy, José A., Negro, Juan J.
Tipo de recurso: artículo
Fecha de publicación:2004
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/34273
Acceso en línea:http://hdl.handle.net/10261/34273
Access Level:acceso abierto
Palabra clave:Bottlenecks
Genetic variability
migration rates
population fragmentation
population structure
Spanish imperial eagle
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spelling Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)Martínez-Cruz, BegoñaGodoy, José A.Negro, Juan J.BottlenecksGenetic variabilitymigration ratespopulation fragmentationpopulation structureSpanish imperial eagleThe highly endangered Spanish imperial eagle, Aquila adalberti , has suffered from both population decline and fragmentation during the last century. Here we describe the current genetic status of the population using an extensive sampling of its current distribution range and both mitochondrial control region sequences and nuclear microsatellite markers. Results were evaluated in comparison to those obtained for the Eastern imperial eagle, Aquila heliaca , its nearest extant relative. Mitochondrial haplotype diversity was lower in the Spanish than in the Eastern species whereas microsatellite allelic richness and expected heterozygosity did not differ. Both allelic richness and expected heterozygosity were lower in the small Parque Nacional de Doñana breeding nucleus compared to the remaining nuclei. A signal for a recent genetic bottleneck was not detected in the current Spanish imperial eagle population. We obtained low but significant pairwise F ST values that were congruent with a model of isolation by distance. F ST and exact tests showed differentiation among the peripheral and small Parque Nacional de Doñana population and the remaining breeding subgroups. The centrally located Montes de Toledo population did not differ from the surrounding Centro, Extremadura and Sierra Morena populations whereas the latter were significantly differentiated. On the other hand, a Bayesian approach identified two groups, Parque Nacional de Doñana and the rest of breeding nuclei. Recent migration rates into and from Parque Nacional de Doñana and the rest of breeding nuclei were detected by assignment methods and estimated as 2.4 and 5.7 individuals per generation, respectively, by a Bayesian approach. We discuss how management strategies should aim at the maintenance of current genetic variability levels and the avoidance of inbreeding depression through the connection of the different nuclei.Peer reviewedBlackwell Publishing201120112004info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/34273reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2004.02220.x/pdfinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/342732026-05-22T06:33:51Z
dc.title.none.fl_str_mv Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
title Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
spellingShingle Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
Martínez-Cruz, Begoña
Bottlenecks
Genetic variability
migration rates
population fragmentation
population structure
Spanish imperial eagle
title_short Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
title_full Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
title_fullStr Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
title_full_unstemmed Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
title_sort Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)
dc.creator.none.fl_str_mv Martínez-Cruz, Begoña
Godoy, José A.
Negro, Juan J.
author Martínez-Cruz, Begoña
author_facet Martínez-Cruz, Begoña
Godoy, José A.
Negro, Juan J.
author_role author
author2 Godoy, José A.
Negro, Juan J.
author2_role author
author
dc.subject.none.fl_str_mv Bottlenecks
Genetic variability
migration rates
population fragmentation
population structure
Spanish imperial eagle
topic Bottlenecks
Genetic variability
migration rates
population fragmentation
population structure
Spanish imperial eagle
description The highly endangered Spanish imperial eagle, Aquila adalberti , has suffered from both population decline and fragmentation during the last century. Here we describe the current genetic status of the population using an extensive sampling of its current distribution range and both mitochondrial control region sequences and nuclear microsatellite markers. Results were evaluated in comparison to those obtained for the Eastern imperial eagle, Aquila heliaca , its nearest extant relative. Mitochondrial haplotype diversity was lower in the Spanish than in the Eastern species whereas microsatellite allelic richness and expected heterozygosity did not differ. Both allelic richness and expected heterozygosity were lower in the small Parque Nacional de Doñana breeding nucleus compared to the remaining nuclei. A signal for a recent genetic bottleneck was not detected in the current Spanish imperial eagle population. We obtained low but significant pairwise F ST values that were congruent with a model of isolation by distance. F ST and exact tests showed differentiation among the peripheral and small Parque Nacional de Doñana population and the remaining breeding subgroups. The centrally located Montes de Toledo population did not differ from the surrounding Centro, Extremadura and Sierra Morena populations whereas the latter were significantly differentiated. On the other hand, a Bayesian approach identified two groups, Parque Nacional de Doñana and the rest of breeding nuclei. Recent migration rates into and from Parque Nacional de Doñana and the rest of breeding nuclei were detected by assignment methods and estimated as 2.4 and 5.7 individuals per generation, respectively, by a Bayesian approach. We discuss how management strategies should aim at the maintenance of current genetic variability levels and the avoidance of inbreeding depression through the connection of the different nuclei.
publishDate 2004
dc.date.none.fl_str_mv 2004
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/34273
url http://hdl.handle.net/10261/34273
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2004.02220.x/pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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