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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
29/01/2013 |
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Data da última atualização: |
03/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. C. M.; PAIVA, S. R.; ALBUQUERQUE, M. S. M.; EGITO, A. A. do; SANTOS, S. A.; LIMA, F. C.; CASTRO, S. T. R.; MARIANTE, A. da S.; CORREA, P. S.; MCMANUS, C. M. |
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Afiliação: |
UnB; UnB; UnB; ANDREA ALVES DO EGITO, CNPGC; SANDRA APARECIDA SANTOS, CPAP; UNIVERSIDADE ESTADUAL DO MARANHÃO; SILVIA TEREZA RIBEIRO CASTRO, CENARGEN; ARTHUR DA SILVA MARIANTE, CENARGEN; UFRGS; UFRGS. |
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Título: |
Genetic variability in local Brazilian horse lines using microsatellite markers. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 11, n.2, p. 881-890, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
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. MenosGenetic 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 genet... Mostrar Tudo |
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Palavras-Chave: |
Conservation genetics; Molecular markers. |
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Thesagro: |
Equus Caballus. |
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Thesaurus Nal: |
animal genetic resources; livestock. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/64128/1/gmr1483.pdf
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Marc: |
LEADER 02402naa a2200289 a 4500
001 1946865
005 2023-03-03
008 2012 bl uuuu u00u1 u #d
100 1 $aSILVA, A. C. M.
245 $aGenetic variability in local Brazilian horse lines using microsatellite markers.$h[electronic resource]
260 $c2012
520 $aGenetic 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.
650 $aanimal genetic resources
650 $alivestock
650 $aEquus Caballus
653 $aConservation genetics
653 $aMolecular markers
700 1 $aPAIVA, S. R.
700 1 $aALBUQUERQUE, M. S. M.
700 1 $aEGITO, A. A. do
700 1 $aSANTOS, S. A.
700 1 $aLIMA, F. C.
700 1 $aCASTRO, S. T. R.
700 1 $aMARIANTE, A. da S.
700 1 $aCORREA, P. S.
700 1 $aMCMANUS, C. M.
773 $tGenetics and Molecular Research$gv. 11, n.2, p. 881-890, 2012.
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Registro original: |
Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
22/10/1998 |
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Data da última atualização: |
21/01/2020 |
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Autoria: |
GUEDES, L. A.; OLIVEIRA, P. C.; FAINA, L. F.; CARDOZO, E. |
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Afiliação: |
DEE-CT/UFPA; CNPTIA; DEINF-CETEC/UFU; DCA-FEEC/UNICAMP. |
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Título: |
An agent-based approach for supporting quality of service in distributed multimedia systems. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Computer Communications, v. 21, n. 14, p. 1269-1278, 1998. |
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DOI: |
10.1016/S0140-3664(98)00188-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Quality of service (QoS) is a core issue in multimedia systems. Intuitively, QoS states how valuable the services provided by a multimedia system are. As a rule, QoS is established through negotiation between users and service providers. The negotiation involves allocation and management of resources in order to attend an expected level of quality. The process of negotiation is simple if the resources are managed by a single entity (e.g., operating system) or by a set of entities supporting a common negotiation protocol. Unfortunately, in distributed multimedia systems, negotiation and management of resources are complex tasks since resources are diversified, distributed and managed by autonomous entities. In order to minimise such difficulties, an agent-based architecture for QoS negotiation and management in distributed multimedia systems is proposed in this paper. The proposed architecture combines fixed and mobile agents that interact among themselves with the aim of establishing and maintaining a certain level of QoS. This paper also presents the current implementation stage of the proposed architecture. |
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Palavras-Chave: |
Agentes; Agents; Gestão da qualidade de serviços; Multimedia systems; QoS management; Quality of service; Sistemas multimidia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01897naa a2200253 a 4500
001 1006685
005 2020-01-21
008 1998 bl uuuu u00u1 u #d
024 7 $a10.1016/S0140-3664(98)00188-1$2DOI
100 1 $aGUEDES, L. A.
245 $aAn agent-based approach for supporting quality of service in distributed multimedia systems.$h[electronic resource]
260 $c1998
520 $aQuality of service (QoS) is a core issue in multimedia systems. Intuitively, QoS states how valuable the services provided by a multimedia system are. As a rule, QoS is established through negotiation between users and service providers. The negotiation involves allocation and management of resources in order to attend an expected level of quality. The process of negotiation is simple if the resources are managed by a single entity (e.g., operating system) or by a set of entities supporting a common negotiation protocol. Unfortunately, in distributed multimedia systems, negotiation and management of resources are complex tasks since resources are diversified, distributed and managed by autonomous entities. In order to minimise such difficulties, an agent-based architecture for QoS negotiation and management in distributed multimedia systems is proposed in this paper. The proposed architecture combines fixed and mobile agents that interact among themselves with the aim of establishing and maintaining a certain level of QoS. This paper also presents the current implementation stage of the proposed architecture.
653 $aAgentes
653 $aAgents
653 $aGestão da qualidade de serviços
653 $aMultimedia systems
653 $aQoS management
653 $aQuality of service
653 $aSistemas multimidia
700 1 $aOLIVEIRA, P. C.
700 1 $aFAINA, L. F.
700 1 $aCARDOZO, E.
773 $tComputer Communications$gv. 21, n. 14, p. 1269-1278, 1998.
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