Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value

Here I present a detailed analysis of individual inbreeding coefficient effects on some reproductive parameters and longevity in three species of gazelles under different conservation status: vulnerable dorcas gazelle, endangered Cuvier’s gazelle, and extinct in the wild mhorr gazelle. The novelty o...

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Detalles Bibliográficos
Autor: Cassinello, Jorge
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2005
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/118204
Acceso en línea:http://hdl.handle.net/10261/118204
Access Level:acceso abierto
Palabra clave:Captive populations
Inbreeding depression
Longevity
Sexual maturity
Ungulates
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spelling Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation valueCassinello, JorgeCaptive populationsInbreeding depressionLongevitySexual maturityUngulatesHere I present a detailed analysis of individual inbreeding coefficient effects on some reproductive parameters and longevity in three species of gazelles under different conservation status: vulnerable dorcas gazelle, endangered Cuvier’s gazelle, and extinct in the wild mhorr gazelle. The novelty of this study stems from the inclusion of both males and females in analyses including a large database of information collected during two decades of periodical studbook inventories for these species. Translocations to different zoo locations of the extinct subspecies mhorr gazelle do not apparently affect reproductive performance (population sex ratio) or individual longevity. In agreement with previous works, the average inbreeding coefficients vary inter-specifically, being higher in Cuvier’s, followed by mhorr and dorcas gazelles. This reflects the different population size of the founding individuals of each species’ captive population. Sexual maturity and age at first birth follow an allometric pattern, occurring at an earlier age in the smallest species (dorcas), followed by Cuvier’s and then the mhorr gazelle. Twinning in Cuvier’s gazelle depends on maternal experience, as it is less frequent in primiparous females. Inbreeding affects neither twinning nor sex ratio. Mhorr gazelles’ studbook shows several causes of death and it emerges that a higher proportion of non-inbred females die due to pathologies than males, although both sexes show similar proportion of mortal pathologies when inbred. Multifactor ANOVA shows that longevity decreases with inbreeding level and that females live longer than males in the three species of gazelles studied, as expected in polygynous mammals. Mhorr and dorcas non-inbred females show higher juvenile survival than males, whereas inbred individuals show a similar declining juvenile survival, particularly in mhorr and Cuvier’s gazelles. Finally, it is discussed the apparent inbreeding tolerance in Cuvier’s species, and the great value keeping and studying long term data of well-monitored captive populations may prove to the conservation of threatened species.The author is currently supported by the Ministerio de Educación y Ciencia through a Ramón y Cajal Contract.Peer reviewedElsevierMinisterio de Educación y Ciencia (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201520152005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/118204reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.biocon.2004.09.006Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1182042026-05-22T06:33:51Z
dc.title.none.fl_str_mv Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
title Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
spellingShingle Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
Cassinello, Jorge
Captive populations
Inbreeding depression
Longevity
Sexual maturity
Ungulates
title_short Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
title_full Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
title_fullStr Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
title_full_unstemmed Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
title_sort Inbreeding depression on reproductive performance and survival in captive gazelles of great conservation value
dc.creator.none.fl_str_mv Cassinello, Jorge
author Cassinello, Jorge
author_facet Cassinello, Jorge
author_role author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Captive populations
Inbreeding depression
Longevity
Sexual maturity
Ungulates
topic Captive populations
Inbreeding depression
Longevity
Sexual maturity
Ungulates
description Here I present a detailed analysis of individual inbreeding coefficient effects on some reproductive parameters and longevity in three species of gazelles under different conservation status: vulnerable dorcas gazelle, endangered Cuvier’s gazelle, and extinct in the wild mhorr gazelle. The novelty of this study stems from the inclusion of both males and females in analyses including a large database of information collected during two decades of periodical studbook inventories for these species. Translocations to different zoo locations of the extinct subspecies mhorr gazelle do not apparently affect reproductive performance (population sex ratio) or individual longevity. In agreement with previous works, the average inbreeding coefficients vary inter-specifically, being higher in Cuvier’s, followed by mhorr and dorcas gazelles. This reflects the different population size of the founding individuals of each species’ captive population. Sexual maturity and age at first birth follow an allometric pattern, occurring at an earlier age in the smallest species (dorcas), followed by Cuvier’s and then the mhorr gazelle. Twinning in Cuvier’s gazelle depends on maternal experience, as it is less frequent in primiparous females. Inbreeding affects neither twinning nor sex ratio. Mhorr gazelles’ studbook shows several causes of death and it emerges that a higher proportion of non-inbred females die due to pathologies than males, although both sexes show similar proportion of mortal pathologies when inbred. Multifactor ANOVA shows that longevity decreases with inbreeding level and that females live longer than males in the three species of gazelles studied, as expected in polygynous mammals. Mhorr and dorcas non-inbred females show higher juvenile survival than males, whereas inbred individuals show a similar declining juvenile survival, particularly in mhorr and Cuvier’s gazelles. Finally, it is discussed the apparent inbreeding tolerance in Cuvier’s species, and the great value keeping and studying long term data of well-monitored captive populations may prove to the conservation of threatened species.
publishDate 2005
dc.date.none.fl_str_mv 2005
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/118204
url http://hdl.handle.net/10261/118204
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.biocon.2004.09.006
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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