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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
24/10/2011 |
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Data da última atualização: |
19/02/2013 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
MUNIZ, F. L.; SILVEIRA, R. DA.; CAMPOS, Z.; MAGNUSSON, W. E.; HRBEK, T.; FARIAS, I. P. |
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Afiliação: |
FABIO L. MUNIZ, UNIVERSIDADE FEDERAL DO AMAZONAS; RONIS DA SILVEIRA, UNIVERSIDADE FEDERAL DO AMAZONAS; ZILCA MARIA DA SILVA CAMPOS, CPAP; WILLIAM E. MAGNUSSON, INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA; TOMAS HRBEK, UNIVERSIDADE FEDERAL DO AMAZONAS; IZENI P. FARIAS, UNIVERSIDADE FEDERAL DO AMAZONAS. |
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Título: |
Multiple paternity in the Black Caiman (Melanosuchus niger) population in the Anavilhanas National Park, Brazilian Amazonia. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Amphibia Reptilia, v.32, n.3, p. 428-434, aug., 2011. |
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Idioma: |
Português |
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Conteúdo: |
The formation of dominance hierarchies in which the female mates with a large dominant male is common among crocodilians. However, there is the possibility of polyandry, in which females mate with multiple partners during a single breeding season and generate offspring with multiple paternity. In the present study, eight pairs of heterologous primers developed for Alligator mississippiensis and Caiman latirostris were used to determine whether multiple paternity exists in the Black Caiman, Melanosuchus niger. For such, we analyzed 34 Black Caiman offspring from the Anavilhanas Archipelago in the Negro River (state of Amazonas, Brazil). The specimens came from six groups, each containing five or six hatchlings. Paternity exclusion and genetic identity indices were calculated to test the robustness of the microsatellite loci. Simple allele counts and maximum likelihood estimation of family clusters were used to determine the likelihood of occurrence of multiple paternity. Among the eight loci tested, five were effective at determining paternity, with paternity exclusion values close to 1.0 (QC = 0.92) and genetic identity values close to zero (IC < 0.01). Using the simple allele count, six cases of multiple paternity were detected and confirmed in three hatchling groups by four different microsatellite loci. However, maximum likelihood analysis indicated multiple paternity in all the groups analyzed, with five family clusters identified in one hatchling group alone. Considering that this species is listed according to IUCN as Lower Risk/Conservation Dependent, our results have direct conservation implications. Multiple paternity increases effective population size by maintaining genetic variation, and thus could be an important mechanism to maintain genetic diversity in isolated local populations. MenosThe formation of dominance hierarchies in which the female mates with a large dominant male is common among crocodilians. However, there is the possibility of polyandry, in which females mate with multiple partners during a single breeding season and generate offspring with multiple paternity. In the present study, eight pairs of heterologous primers developed for Alligator mississippiensis and Caiman latirostris were used to determine whether multiple paternity exists in the Black Caiman, Melanosuchus niger. For such, we analyzed 34 Black Caiman offspring from the Anavilhanas Archipelago in the Negro River (state of Amazonas, Brazil). The specimens came from six groups, each containing five or six hatchlings. Paternity exclusion and genetic identity indices were calculated to test the robustness of the microsatellite loci. Simple allele counts and maximum likelihood estimation of family clusters were used to determine the likelihood of occurrence of multiple paternity. Among the eight loci tested, five were effective at determining paternity, with paternity exclusion values close to 1.0 (QC = 0.92) and genetic identity values close to zero (IC < 0.01). Using the simple allele count, six cases of multiple paternity were detected and confirmed in three hatchling groups by four different microsatellite loci. However, maximum likelihood analysis indicated multiple paternity in all the groups analyzed, with five family clusters identified in one hatchling group alone. Considerin... Mostrar Tudo |
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Palavras-Chave: |
Microsatellites. |
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Thesaurus Nal: |
Alligatoridae; Melanosuchus niger. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02474naa a2200217 a 4500
001 1903858
005 2013-02-19
008 2011 bl --- 0-- u #d
100 1 $aMUNIZ, F. L.
245 $aMultiple paternity in the Black Caiman (Melanosuchus niger) population in the Anavilhanas National Park, Brazilian Amazonia.
260 $c2011
520 $aThe formation of dominance hierarchies in which the female mates with a large dominant male is common among crocodilians. However, there is the possibility of polyandry, in which females mate with multiple partners during a single breeding season and generate offspring with multiple paternity. In the present study, eight pairs of heterologous primers developed for Alligator mississippiensis and Caiman latirostris were used to determine whether multiple paternity exists in the Black Caiman, Melanosuchus niger. For such, we analyzed 34 Black Caiman offspring from the Anavilhanas Archipelago in the Negro River (state of Amazonas, Brazil). The specimens came from six groups, each containing five or six hatchlings. Paternity exclusion and genetic identity indices were calculated to test the robustness of the microsatellite loci. Simple allele counts and maximum likelihood estimation of family clusters were used to determine the likelihood of occurrence of multiple paternity. Among the eight loci tested, five were effective at determining paternity, with paternity exclusion values close to 1.0 (QC = 0.92) and genetic identity values close to zero (IC < 0.01). Using the simple allele count, six cases of multiple paternity were detected and confirmed in three hatchling groups by four different microsatellite loci. However, maximum likelihood analysis indicated multiple paternity in all the groups analyzed, with five family clusters identified in one hatchling group alone. Considering that this species is listed according to IUCN as Lower Risk/Conservation Dependent, our results have direct conservation implications. Multiple paternity increases effective population size by maintaining genetic variation, and thus could be an important mechanism to maintain genetic diversity in isolated local populations.
650 $aAlligatoridae
650 $aMelanosuchus niger
653 $aMicrosatellites
700 1 $aSILVEIRA, R. DA.
700 1 $aCAMPOS, Z.
700 1 $aMAGNUSSON, W. E.
700 1 $aHRBEK, T.
700 1 $aFARIAS, I. P.
773 $tAmphibia Reptilia$gv.32, n.3, p. 428-434, aug., 2011.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
27/03/2009 |
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Data da última atualização: |
27/03/2009 |
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Tipo da produção científica: |
Monitoramento/Zoneamento |
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Autoria: |
ACCIOLY, L. J. de O.; SILVA, A. B. da; SILVEIRA, H. L. F. da; LOPES, H. L.; FONSECA, J. C. da; MENEZES, A. A. de A.; SILVA, J. A. da; SILVA, E. A. da; FRANÇA, A. E. D. de; SILVA, F. F. da; GUIMARÃES, L. M.; AZEVEDO, V. W. B.; SILVA, E. A. da. |
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Afiliação: |
Luciano José de Oliveira Accioly, Embrapa Solos; Ademar Barros da Silva, Embrapa Solos; Hilton Luís Ferraz da Silveira, Embrapa Solos; Hélio Leandro Lopes, Embrapa Solos; João Cordeiro da Fonseca, Embrapa Solos; Arnaldo A. de Alecrim Menezes, Embrapa Solos; Juliana Alves da Silva, Embrapa Solos; Eduardo Alves da Silva, Embrapa Solos; Álvaro Eugênio Duarte de França, Embrapa Solos; Fábio Fernandes da Silva, Embrapa Solos; Luciano Macedo Guimarães, Embrapa Solos; Verônica Wilma Bezerra Azevedo, Embrapa Solos; Eudmar Alves da Silva, Embrapa Solos. |
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Título: |
Mapa relatório de uso e cobertura das terras do estado de Alagoas - Folha Palmares. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Recife: Embrapa Solos UEP, 2008. |
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Páginas: |
1 mapa. |
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Descrição Física: |
mapa color.; escala 1:100.000. |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00767nem a2200253 a 4500
001 1340042
005 2009-03-27
008 2008 bl uuuu u0uu1 u #d
100 1 $aACCIOLY, L. J. de O.
245 $aMapa relatório de uso e cobertura das terras do estado de Alagoas - Folha Palmares.
260 $aRecife: Embrapa Solos UEP$c2008
300 $a1 mapa.$cmapa color.; escala 1:100.000.
700 1 $aSILVA, A. B. da
700 1 $aSILVEIRA, H. L. F. da
700 1 $aLOPES, H. L.
700 1 $aFONSECA, J. C. da
700 1 $aMENEZES, A. A. de A.
700 1 $aSILVA, J. A. da
700 1 $aSILVA, E. A. da
700 1 $aFRANÇA, A. E. D. de
700 1 $aSILVA, F. F. da
700 1 $aGUIMARÃES, L. M.
700 1 $aAZEVEDO, V. W. B.
700 1 $aSILVA, E. A. da
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