Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin

Fil: Swarça, Ana Claudia. Universidad Estatal de Londrina. Centro de Ciencias Biológicas. Departamento de Histología; Brasil.

Bibliographic Details
Main Authors:	Swarça, Ana Claudia, Dias, Ana Lucia, Fenocchio, Alberto Sergio
Format:	info:eu-repo/semantics/article
Language:	English
Published:	Pensoft 2017
Subjects:	Neotropical fish Parrot catfish Karyotype Ag-NORs 18S rDNA CMA3 C-banding
Online Access:	https://hdl.handle.net/20.500.12219/4338

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spelling	ir-20.500.12219-43382023-02-06T16:14:51Z Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin Swarça, Ana Claudia Dias, Ana Lucia Fenocchio, Alberto Sergio Neotropical fish Parrot catfish Karyotype Ag-NORs 18S rDNA CMA3 C-banding Fil: Swarça, Ana Claudia. Universidad Estatal de Londrina. Centro de Ciencias Biológicas. Departamento de Histología; Brasil. Fil: Dias, Ana Lucia. Universidad Estatal de Londrina. Centro de Ciencias Biológicas. Departamento de Histología; Brasil. Fil: Fenocchio, Alberto Sergio. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Departamento de Genética; Argentina. Fil: Fenocchio, Alberto Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico (Nordeste). Instituto de Biología Subtropical; Argentina. Fil: Fenocchio, Alberto Sergio. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Biología Subtropical; Argentina. The objective of this study was to cytogenetically analyze Phractocephalus hemioliopterus comparing the findings with other data to infer relationships among Pimelodidae species. The results revealed a diploid number of 2n = 56 and the karyotype composed of 16 metacentric, 20 submetacentric, 6 subtelocentric and 14 acrocentric chromosomes (FN = 98). The Ag-NORs, 18S rDNA and CMA3 signals were coincident in location occupying the short arm of an acrocentric chromosome pair (23th), in a secondary constriction. The 5S rDNA genes were localized near the centromere on the short arms of one submetacentric chromosome pair. C-bands were localized predominantly in the terminal regions of chromosomes, including the AgNORs and a small metacentric pair with a conspicuous positive band on interstitial region. This chromosome pair could be considered a species-specific cytogenetic marker. 2017-03-06 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://hdl.handle.net/20.500.12219/4338 eng info:eu-repo/semantics/altIdentifier/url/https://compcytogen.pensoft.net/article/11152/ info:eu-repo/semantics/openAccess application/pdf application/pdf 464.9 KB Pensoft
institution	Universidad Nacional de Misiones
collection	Repositorio RIDUNaM
language	English
topic	Neotropical fish Parrot catfish Karyotype Ag-NORs 18S rDNA CMA3 C-banding
spellingShingle	Neotropical fish Parrot catfish Karyotype Ag-NORs 18S rDNA CMA3 C-banding Swarça, Ana Claudia Dias, Ana Lucia Fenocchio, Alberto Sergio Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
description	Fil: Swarça, Ana Claudia. Universidad Estatal de Londrina. Centro de Ciencias Biológicas. Departamento de Histología; Brasil.
format	info:eu-repo/semantics/article
author	Swarça, Ana Claudia Dias, Ana Lucia Fenocchio, Alberto Sergio
author_facet	Swarça, Ana Claudia Dias, Ana Lucia Fenocchio, Alberto Sergio
author_sort	Swarça, Ana Claudia
title	Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
title_short	Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
title_full	Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
title_fullStr	Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
title_full_unstemmed	Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
title_sort	cytogenetic studies in the redtail catfish, phractocephalus hemioliopterus (bloch & schneider, 1801) (siluriformes, pimelodidae) a giant fish from amazon basin
publisher	Pensoft
publishDate	2017
url	https://hdl.handle.net/20.500.12219/4338
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Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin

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