Artigo

Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003

The neotropical freshwater systems have a high number of catfish species (Siluriformes), and many of those are denominated "cascudos" in Brazil. Cytogenetic data about three "cascudos" species fished in the rio Araguaia are described in the present study. The Pterygoplichthys joselimaianus showed 2n...

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Autor principal: Oliveira, Renildo Ribeiro de
Outros Autores: Souza, Issakar Lima, Venere, Paulo Cesar
Grau: Artigo
Idioma: English
Publicado em: Neotropical Ichthyology 2020
Assuntos:
Hemiancistrus
Loricariidae
Pterygoplichthys
Siluriformes
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/14634
id oai:repositorio:1-14634
recordtype dspace
spelling oai:repositorio:1-14634 Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003 Oliveira, Renildo Ribeiro de Souza, Issakar Lima Venere, Paulo Cesar Hemiancistrus Loricariidae Pterygoplichthys Siluriformes The neotropical freshwater systems have a high number of catfish species (Siluriformes), and many of those are denominated "cascudos" in Brazil. Cytogenetic data about three "cascudos" species fished in the rio Araguaia are described in the present study. The Pterygoplichthys joselimaianus showed 2n=52, with 28 metacentrics (M) chromosomes, 16 submetacentrics (SM) and 8 subtelocentrics/acrocentrics (ST/A) in both sexes. Hemiancistrus spinosissimus showed 2n=52, with karyotype formulae 26M+22SM+4ST, in both sexes. Hemiancistrus spilomma also showed 2n=52, but in this species a ZZ/ZW sex chromosome system (25M+21SM+6ST in females and 24M+22SM+6ST in males) was observed. The cells from H. spinosissimus and P. joselimaianus showed one chromosome pair bearing Ag-NORs, while in the H. spilomma three chromosome pairs bearing Ag-NORs were detected. The data showed in this work reveal particular chromosomal characteristics, important for a good recognition of both Hemincistrus species, and also show the importance of the insertion of cytogenetic data on taxonomic phylogenetic studies. Copyright © 2006 Sociedade Brasileira de Ictiologia. 2020-04-24T16:55:31Z 2020-04-24T16:55:31Z 2006 Artigo https://repositorio.inpa.gov.br/handle/1/14634 10.1590/S1679-62252006000100010 en Volume 4, Número 1, Pags. 93-97 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Neotropical Ichthyology
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Hemiancistrus
Loricariidae
Pterygoplichthys
Siluriformes
spellingShingle Hemiancistrus
Loricariidae
Pterygoplichthys
Siluriformes
Oliveira, Renildo Ribeiro de
Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
topic_facet Hemiancistrus
Loricariidae
Pterygoplichthys
Siluriformes
description The neotropical freshwater systems have a high number of catfish species (Siluriformes), and many of those are denominated "cascudos" in Brazil. Cytogenetic data about three "cascudos" species fished in the rio Araguaia are described in the present study. The Pterygoplichthys joselimaianus showed 2n=52, with 28 metacentrics (M) chromosomes, 16 submetacentrics (SM) and 8 subtelocentrics/acrocentrics (ST/A) in both sexes. Hemiancistrus spinosissimus showed 2n=52, with karyotype formulae 26M+22SM+4ST, in both sexes. Hemiancistrus spilomma also showed 2n=52, but in this species a ZZ/ZW sex chromosome system (25M+21SM+6ST in females and 24M+22SM+6ST in males) was observed. The cells from H. spinosissimus and P. joselimaianus showed one chromosome pair bearing Ag-NORs, while in the H. spilomma three chromosome pairs bearing Ag-NORs were detected. The data showed in this work reveal particular chromosomal characteristics, important for a good recognition of both Hemincistrus species, and also show the importance of the insertion of cytogenetic data on taxonomic phylogenetic studies. Copyright © 2006 Sociedade Brasileira de Ictiologia.
format Artigo
author Oliveira, Renildo Ribeiro de
author2 Souza, Issakar Lima
Venere, Paulo Cesar
author2Str Souza, Issakar Lima
Venere, Paulo Cesar
title Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
title_short Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
title_full Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
title_fullStr Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
title_full_unstemmed Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003
title_sort karyotype description of three species of loricariidae (siluriformes) and occurrence of the zz/zw sexual system in hemiancistrus spilomma cardoso & lucinda, 2003
publisher Neotropical Ichthyology
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/14634
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score 11.755432

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