Genetic variability in local Brazilian horse lines using microsatellite markers.
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , , , |
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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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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1794503448832507904 |