Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae)
The giant otter, Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae), was widely distributed in South America but stable populations are now only found in the Pantanal and Amazon regions and the species is classified as endangered. There is only one recognized species of giant o...
| Autor principal: | Franco-De-Sá, Jorge Felipe Oliveira |
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| Outros Autores: | Weber Rosas, Fernando Cesar, Feldberg, Eliana |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Genetics and Molecular Biology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14964 |
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oai:repositorio:1-14964 |
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oai:repositorio:1-14964 Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) Franco-De-Sá, Jorge Felipe Oliveira Weber Rosas, Fernando Cesar Feldberg, Eliana Carnivora Centromere Chromosome 17 Chromosome Analysis Chromosome C Band Chromosome Nor Chromosome Pairing Controlled Study Cytogenetics Diploidy Female Heterochromatin Karyotype Male Nonhuman Sex Chromosome Species Difference Carnivora Lutrinae Mammalia Mustelidae Pteronura Brasiliensis The giant otter, Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae), was widely distributed in South America but stable populations are now only found in the Pantanal and Amazon regions and the species is classified as endangered. There is only one recognized species of giant otter, although two subspecies of doubtful value have also been cited in the literature. We present the first karyotype of four captive P. brasiliensis specimens, all of which posses 2n = 38 chromosomes as 14M+8SM+6ST+8A and one pair of sexual chromosomes. An heteromorphic secondary constriction, associated with the nucleolar organizer region (NOR), was seen on the long arms of chromosome pair 17. The C-banding technique revealed heterochromatin in the centromeric region of all the chromosomes and the NOR was C-banding positive. The giant otter presented the same diploid number as most mustelids, although its karyotype is quite species-specific. Copyright by the Brazilian Society of Genetics. 2020-05-07T13:59:11Z 2020-05-07T13:59:11Z 2007 Artigo https://repositorio.inpa.gov.br/handle/1/14964 10.1590/S1415-47572007000600011 en Volume 30, Número 4, Pags. 1093-1096 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Genetics and Molecular Biology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Carnivora Centromere Chromosome 17 Chromosome Analysis Chromosome C Band Chromosome Nor Chromosome Pairing Controlled Study Cytogenetics Diploidy Female Heterochromatin Karyotype Male Nonhuman Sex Chromosome Species Difference Carnivora Lutrinae Mammalia Mustelidae Pteronura Brasiliensis |
| spellingShingle |
Carnivora Centromere Chromosome 17 Chromosome Analysis Chromosome C Band Chromosome Nor Chromosome Pairing Controlled Study Cytogenetics Diploidy Female Heterochromatin Karyotype Male Nonhuman Sex Chromosome Species Difference Carnivora Lutrinae Mammalia Mustelidae Pteronura Brasiliensis Franco-De-Sá, Jorge Felipe Oliveira Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| topic_facet |
Carnivora Centromere Chromosome 17 Chromosome Analysis Chromosome C Band Chromosome Nor Chromosome Pairing Controlled Study Cytogenetics Diploidy Female Heterochromatin Karyotype Male Nonhuman Sex Chromosome Species Difference Carnivora Lutrinae Mammalia Mustelidae Pteronura Brasiliensis |
| description |
The giant otter, Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae), was widely distributed in South America but stable populations are now only found in the Pantanal and Amazon regions and the species is classified as endangered. There is only one recognized species of giant otter, although two subspecies of doubtful value have also been cited in the literature. We present the first karyotype of four captive P. brasiliensis specimens, all of which posses 2n = 38 chromosomes as 14M+8SM+6ST+8A and one pair of sexual chromosomes. An heteromorphic secondary constriction, associated with the nucleolar organizer region (NOR), was seen on the long arms of chromosome pair 17. The C-banding technique revealed heterochromatin in the centromeric region of all the chromosomes and the NOR was C-banding positive. The giant otter presented the same diploid number as most mustelids, although its karyotype is quite species-specific. Copyright by the Brazilian Society of Genetics. |
| format |
Artigo |
| author |
Franco-De-Sá, Jorge Felipe Oliveira |
| author2 |
Weber Rosas, Fernando Cesar Feldberg, Eliana |
| author2Str |
Weber Rosas, Fernando Cesar Feldberg, Eliana |
| title |
Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| title_short |
Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| title_full |
Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| title_fullStr |
Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| title_full_unstemmed |
Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae) |
| title_sort |
cytogenetic study of the giant otter pteronura brasiliensis zimmermann 1780 (carnivora, mustelidae, lutrinae) |
| publisher |
Genetics and Molecular Biology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/14964 |
| _version_ |
1787144100813733888 |
| score |
11.755432 |