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.
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Format: | info:eu-repo/semantics/article |
Language: | English |
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2017
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Online Access: | https://hdl.handle.net/20.500.12219/4338 |
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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 |
collection | Repositorio RIDUNaM |
description | Fil: Swarça, Ana Claudia. Universidad Estatal de Londrina. Centro de Ciencias Biológicas. Departamento de Histología; Brasil. |
format | info:eu-repo/semantics/article |
id | ir-20.500.12219-4338 |
institution | Universidad Nacional de Misiones |
language | English |
publishDate | 2017 |
publisher | Pensoft |
record_format | dspace |
spelling | ir-20.500.12219-43382024-06-04T10:15:25Z 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 |
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 |
title | 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_short | 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 |
topic | Neotropical fish Parrot catfish Karyotype Ag-NORs 18S rDNA CMA3 C-banding |
url | https://hdl.handle.net/20.500.12219/4338 |
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