Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed

The Catalonian donkey is one of the most endangered donkey breeds in the world. At present, five main subpopulations exist: AFRAC, which consists of many genetically connected Catalonian localities; Berga, which consists of a single herd located also in Catalunya but under private management; and th...

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Detalles Bibliográficos
Autores: Gutiérrez, J. P., Marmi, J., Goyache Goñi, Félix, Jordana, J.
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:español
OAI Identifier:oai:docta.ucm.es:20.500.14352/52333
Acceso en línea:https://hdl.handle.net/20.500.14352/52333
Access Level:acceso abierto
Palabra clave:Animal pedigree
Animal population
Donkey breeds
Donkeys
Population genetics
Microsatellites
Ganado equino
Genética
3104.05 Équidos
2409 Genética
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spelling Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breedGutiérrez, J. P.Marmi, J.Goyache Goñi, FélixJordana, J.Animal pedigreeAnimal populationDonkey breedsDonkeysPopulation geneticsMicrosatellitesGanado equinoGenética3104.05 Équidos2409 GenéticaThe Catalonian donkey is one of the most endangered donkey breeds in the world. At present, five main subpopulations exist: AFRAC, which consists of many genetically connected Catalonian localities; Berga, which consists of a single herd located also in Catalunya but under private management; and three minor non-Catalonian subpopulations (Huesca, Sevilla and Toledo). In this study, we analysed the pedigree information of the Catalonian donkey herdbook to assess the genetic diversity and population structure of the breed. We found that the Catalonian donkey has suffered an important loss of genetic diversity and moderate to high increases of inbreeding because of the abuse of a few individuals in matings. This scenario is mainly characterized by the fact that both the effective number of founders and ancestors for the whole population was 70.6 and 27, respectively, while the equivalent number of founders was 146.5 and the number of ancestors explaining overall genetic variability was 93. In addition, only 14% of animals born between the 1960s and 1970s were significantly represented in the pedigree. Our results also show that subpopulations where breeders exchanged reproductive individuals had low levels of inbreeding and average relatedness. One subpopulation, Berga, was reproductively isolated and showed high levels of inbreeding ( F = 7.22%), with average relatedness (AR = 6.61%) playing an important role in increasing the values of these coefficients in the whole pedigree. Using genealogical F-statistics we have found little evidence of population structuring ( F<sub>ST</sub> = 0.0083) with major genetic differences among non-Catalonian subpopulations.Universidad Complutense de Madrid20052005-12-0120052005-12-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/52333reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/523332026-06-02T12:44:21Z
dc.title.none.fl_str_mv Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
title Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
spellingShingle Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
Gutiérrez, J. P.
Animal pedigree
Animal population
Donkey breeds
Donkeys
Population genetics
Microsatellites
Ganado equino
Genética
3104.05 Équidos
2409 Genética
title_short Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
title_full Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
title_fullStr Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
title_full_unstemmed Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
title_sort Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed
dc.creator.none.fl_str_mv Gutiérrez, J. P.
Marmi, J.
Goyache Goñi, Félix
Jordana, J.
author Gutiérrez, J. P.
author_facet Gutiérrez, J. P.
Marmi, J.
Goyache Goñi, Félix
Jordana, J.
author_role author
author2 Marmi, J.
Goyache Goñi, Félix
Jordana, J.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv Animal pedigree
Animal population
Donkey breeds
Donkeys
Population genetics
Microsatellites
Ganado equino
Genética
3104.05 Équidos
2409 Genética
topic Animal pedigree
Animal population
Donkey breeds
Donkeys
Population genetics
Microsatellites
Ganado equino
Genética
3104.05 Équidos
2409 Genética
description The Catalonian donkey is one of the most endangered donkey breeds in the world. At present, five main subpopulations exist: AFRAC, which consists of many genetically connected Catalonian localities; Berga, which consists of a single herd located also in Catalunya but under private management; and three minor non-Catalonian subpopulations (Huesca, Sevilla and Toledo). In this study, we analysed the pedigree information of the Catalonian donkey herdbook to assess the genetic diversity and population structure of the breed. We found that the Catalonian donkey has suffered an important loss of genetic diversity and moderate to high increases of inbreeding because of the abuse of a few individuals in matings. This scenario is mainly characterized by the fact that both the effective number of founders and ancestors for the whole population was 70.6 and 27, respectively, while the equivalent number of founders was 146.5 and the number of ancestors explaining overall genetic variability was 93. In addition, only 14% of animals born between the 1960s and 1970s were significantly represented in the pedigree. Our results also show that subpopulations where breeders exchanged reproductive individuals had low levels of inbreeding and average relatedness. One subpopulation, Berga, was reproductively isolated and showed high levels of inbreeding ( F = 7.22%), with average relatedness (AR = 6.61%) playing an important role in increasing the values of these coefficients in the whole pedigree. Using genealogical F-statistics we have found little evidence of population structuring ( F<sub>ST</sub> = 0.0083) with major genetic differences among non-Catalonian subpopulations.
publishDate 2005
dc.date.none.fl_str_mv 2005
2005-12-01
2005
2005-12-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/52333
url https://hdl.handle.net/20.500.14352/52333
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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