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| Souza-Shibatta,Lenice; Pezenti,Larissa Forim; Ferreira,Dhiego Gomes; Almeida,Fernanda Simões de; Sofia,Silvia Helena; Shibatta,Oscar Akio. |
| Specimens of Pimelodellacaptured in the Miranda River, Pantanal of Mato Grosso do Sul State, present morphological features that could indicate at least four species. Therefore, karyotype analysis and molecular biology provided evidence that they were only two species, one showing 2n = 46, and the other, 2n = 52 chromosomes, with only 18% genetic similarity. The morphological analysis evidenced that the dorsal filament is a male characteristic and that the upper lobe of the caudal fin was variable and might or might not be elongated in both species. With respect to morphometric characters, the formation of two groups was evident, but with a small overlap of specimens between them. Among the species with filaments on the dorsal fin observed in the Pantanal,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cytotaxonomy; Cytogenetics; Multivariate morphometrics; RAPD. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100101 |
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