12 documents found, page 1 of 2

Comparative cytogenetics of serrasalmidae (Teleostei: Characiformes): The relat...

Made available in DSpace on 2022-04-28T19:45:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-10-01; Fundação de Amparo à Pesquisa do Estado do Amazonas; Serrasalmidae has high morphological and chromosomal diversity. Based on molecular hypotheses, the family is currently divided into two subfamilies, Colossomatinae and Serrasalminae, with Serrasalminae composed of two tribes: Myleini (comprising most ...

Mapping of ribosomal genes and chromosomal markers in three species of the genu...

Karyotypic characteristics of three species of the genus serrasalmus (S. altispinnis, S. gouldingi and S. Serrulatus) from the middle and lower Negro River, Amazon Basin, were investigated using different staining techniques and Fluorescent in situ hybridization with 5S and 18S rDNA probes. The diploid number was invariably 2n = 60 and the fundamental number was FN = 110. Nevertheless, the karyotypes differed f...

Ocorrência de dois citotipos em Serrasalmus spilopleura Kner, 1858 (characiform...

Descreve-se pela primeira vez o cariótipo de exemplares de S. spilopleura da Amazônia Central. Todos os indivíduos analisados apresentaram número diplóide igual a 60 cromossomos, em conformidade com os dados da espécie obtidos em indivíduos da bacia do Paraná-Paraguai. No entanto, dois citótipos foram encontrados em simpatria na região de confluência dos rios Negro e Solimões, os quais não estão relacionados a ...

Esterase-D and chromosome patterns in Central Amazon piranha (Serrasalmus rhomb...

This study presents additional genetic data on piranha (Serrasalmus rhombeus Linnaeus, 1766) complex previously diagnosed due to the presence of distinct cytotypes 2n = 58 and 2n = 60. Three esterase-D enzyme loci (Est-D1, Est-D2 and Est-D3) were examined and complemented with chromosomal data from 66 piranha specimens collected from Lake Catalão. For all specimens the Est-D1 and Est-D2 loci were monomorphic. I...

Karyotype differentiation and cytotaxonomic considerations in species of Serras...

Six species of Serrasalmidae from the central Amazon, representatives of the genera Serrasalmus (S. elongatus, S. maculatus, S. cf. rhombeus, and S. rhombeus), Pygocentrus (P. nattereri), and Colossoma (C. macropomum), were analyzed regarding the distribution of the Ag-NORs, C-positive heterochromatin and 18S and 5S rRNA genes on the chromosomes. All specimens had 2n = 60 chromosomes, except S. cf. rhombeus, wi...

Esterase-D and chromosome patterns in Central Amazon piranha (Serrasalmus rhomb...

A comparative cytogenetic study of five piranha species (Serrasalmus, Serrasalm...

A checklist of chromosome numbers and karyotypes of amazonian freshwater fishes

Cytogenetic studies in Hemiodidae (Ostariophysi, Characiformes) fishes from the...

Mapping of ribosomal genes and chromosomal markers in three species of