Genetic variability in local Brazilian horse lines using microsatellite markers.

Detalhes bibliográficos
Autor(a) principal: SILVA, A. C. M.
Data de Publicação: 2012
Outros Autores: PAIVA, S. R., ALBUQUERQUE, M. S. M., EGITO, A. A. do, SANTOS, S. A., LIMA, F. C., CASTRO, S. T., MARIANTE, A. da S., CORREA, P. S., MCMANUS, C. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/931531
Resumo: Genetic variability at 11 microsatellite markers was analyzed in five naturalized/local Brazilian horse breeds or genetic groups. Blood samples were collected from 328 animals of the breeds Campeira (Santa Catarina State), Lavradeira (Roraima State), Pantaneira (Pantanal Mato-Grossense), Mangalarga Marchador (Minas Gerais State), as well as the genetic group Baixadeiro (Maranhão State), and the exotic breeds English Thoroughbred and Arab. We found significant genetic variability within evaluated microsatellite loci, with observed heterozygosis varying between 0.426 and 0.768 and polymorphism information content values of 0.751 to 0.914. All breeds showed high inbreeding coefficients and were not in Hardy-Weinberg equilibrium. The smallest genetic distance was seen between the Pantaneira and Arab breeds. The principal component analyzes and Bayesian approach demonstrated that the exotic breeds have had a significant influence on the genetic formation of the local breeds, with introgression of English Throroughbred in Pantaneira and Lavradeira, as well as genetic proximity between the Arab, Pantaneira and Mangalarga Marchador populations. This study shows the need to conserve traits acquired by naturalized horse breeds over centuries of natural selection in Brazil due to the genetic uniqueness of each group, suggesting a reduced gene flow between them. These results reinforce the need to include these herds in animal genetic resource conservation programs to maximize the genetic variability and conserve useful allele combinations.
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spelling Genetic variability in local Brazilian horse lines using microsatellite markers.Conservation geneticsMolecular markersEquus Caballusanimal genetic resourceslivestockGenetic variability at 11 microsatellite markers was analyzed in five naturalized/local Brazilian horse breeds or genetic groups. Blood samples were collected from 328 animals of the breeds Campeira (Santa Catarina State), Lavradeira (Roraima State), Pantaneira (Pantanal Mato-Grossense), Mangalarga Marchador (Minas Gerais State), as well as the genetic group Baixadeiro (Maranhão State), and the exotic breeds English Thoroughbred and Arab. We found significant genetic variability within evaluated microsatellite loci, with observed heterozygosis varying between 0.426 and 0.768 and polymorphism information content values of 0.751 to 0.914. All breeds showed high inbreeding coefficients and were not in Hardy-Weinberg equilibrium. The smallest genetic distance was seen between the Pantaneira and Arab breeds. The principal component analyzes and Bayesian approach demonstrated that the exotic breeds have had a significant influence on the genetic formation of the local breeds, with introgression of English Throroughbred in Pantaneira and Lavradeira, as well as genetic proximity between the Arab, Pantaneira and Mangalarga Marchador populations. This study shows the need to conserve traits acquired by naturalized horse breeds over centuries of natural selection in Brazil due to the genetic uniqueness of each group, suggesting a reduced gene flow between them. These results reinforce the need to include these herds in animal genetic resource conservation programs to maximize the genetic variability and conserve useful allele combinations.UnB; UnB; UnB; ANDREA ALVES DO EGITO, CNPGC; SANDRA APARECIDA SANTOS, CPAP; UNIVERSIDADE ESTADUAL DO MARANHÃO; CENARGEN; ARTHUR DA SILVA MARIANTE, CENARGEN; UFRGS; UFRGS.SILVA, A. C. M.PAIVA, S. R.ALBUQUERQUE, M. S. M.EGITO, A. A. doSANTOS, S. A.LIMA, F. C.CASTRO, S. T.MARIANTE, A. da S.CORREA, P. S.MCMANUS, C. M.2018-01-29T23:35:51Z2018-01-29T23:35:51Z2012-08-1720122018-01-29T23:35:51Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGenetics and Molecular Research, v. 11, n.2, p. 881-890, 2012.http://www.alice.cnptia.embrapa.br/alice/handle/doc/931531enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-01-29T23:35:58Zoai:www.alice.cnptia.embrapa.br:doc/931531Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542018-01-29T23:35:58falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-01-29T23:35:58Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Genetic variability in local Brazilian horse lines using microsatellite markers.
title Genetic variability in local Brazilian horse lines using microsatellite markers.
spellingShingle Genetic variability in local Brazilian horse lines using microsatellite markers.
SILVA, A. C. M.
Conservation genetics
Molecular markers
Equus Caballus
animal genetic resources
livestock
title_short Genetic variability in local Brazilian horse lines using microsatellite markers.
title_full Genetic variability in local Brazilian horse lines using microsatellite markers.
title_fullStr Genetic variability in local Brazilian horse lines using microsatellite markers.
title_full_unstemmed Genetic variability in local Brazilian horse lines using microsatellite markers.
title_sort Genetic variability in local Brazilian horse lines using microsatellite markers.
author SILVA, A. C. M.
author_facet SILVA, A. C. M.
PAIVA, S. R.
ALBUQUERQUE, M. S. M.
EGITO, A. A. do
SANTOS, S. A.
LIMA, F. C.
CASTRO, S. T.
MARIANTE, A. da S.
CORREA, P. S.
MCMANUS, C. M.
author_role author
author2 PAIVA, S. R.
ALBUQUERQUE, M. S. M.
EGITO, A. A. do
SANTOS, S. A.
LIMA, F. C.
CASTRO, S. T.
MARIANTE, A. da S.
CORREA, P. S.
MCMANUS, C. M.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv UnB; UnB; UnB; ANDREA ALVES DO EGITO, CNPGC; SANDRA APARECIDA SANTOS, CPAP; UNIVERSIDADE ESTADUAL DO MARANHÃO; CENARGEN; ARTHUR DA SILVA MARIANTE, CENARGEN; UFRGS; UFRGS.
dc.contributor.author.fl_str_mv SILVA, A. C. M.
PAIVA, S. R.
ALBUQUERQUE, M. S. M.
EGITO, A. A. do
SANTOS, S. A.
LIMA, F. C.
CASTRO, S. T.
MARIANTE, A. da S.
CORREA, P. S.
MCMANUS, C. M.
dc.subject.por.fl_str_mv Conservation genetics
Molecular markers
Equus Caballus
animal genetic resources
livestock
topic Conservation genetics
Molecular markers
Equus Caballus
animal genetic resources
livestock
description Genetic variability at 11 microsatellite markers was analyzed in five naturalized/local Brazilian horse breeds or genetic groups. Blood samples were collected from 328 animals of the breeds Campeira (Santa Catarina State), Lavradeira (Roraima State), Pantaneira (Pantanal Mato-Grossense), Mangalarga Marchador (Minas Gerais State), as well as the genetic group Baixadeiro (Maranhão State), and the exotic breeds English Thoroughbred and Arab. We found significant genetic variability within evaluated microsatellite loci, with observed heterozygosis varying between 0.426 and 0.768 and polymorphism information content values of 0.751 to 0.914. All breeds showed high inbreeding coefficients and were not in Hardy-Weinberg equilibrium. The smallest genetic distance was seen between the Pantaneira and Arab breeds. The principal component analyzes and Bayesian approach demonstrated that the exotic breeds have had a significant influence on the genetic formation of the local breeds, with introgression of English Throroughbred in Pantaneira and Lavradeira, as well as genetic proximity between the Arab, Pantaneira and Mangalarga Marchador populations. This study shows the need to conserve traits acquired by naturalized horse breeds over centuries of natural selection in Brazil due to the genetic uniqueness of each group, suggesting a reduced gene flow between them. These results reinforce the need to include these herds in animal genetic resource conservation programs to maximize the genetic variability and conserve useful allele combinations.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-17
2012
2018-01-29T23:35:51Z
2018-01-29T23:35:51Z
2018-01-29T23:35:51Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Genetics and Molecular Research, v. 11, n.2, p. 881-890, 2012.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/931531
identifier_str_mv Genetics and Molecular Research, v. 11, n.2, p. 881-890, 2012.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/931531
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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