Cytogenetic characterization of a population of Bryconamericus aff. iheringii (Characidae, Tetragonopterinae)

Paintner-Marques, Tânia Regina; Giuliano-Caetano, Lucia; Dias, Ana Lúcia

Paintner-Marques, Tânia Regina; Giuliano-Caetano, Lucia; Dias, Ana Lúcia.

Paintner-Marques, Tânia Regina; Universidade Estadual de Londrina. Departamento de Biologia Geral. Londrina. BR
Giuliano-Caetano, Lucia; Universidade Estadual de Londrina. Departamento de Biologia Geral. Londrina. BR
Dias, Ana Lúcia; Universidade Estadual de Londrina. Departamento de Biologia Geral. Londrina. BR

Genet. mol. biol ; 26(2): 145-149, Jun. 2003. ilus

Article in English | LILACS | ID: lil-345964

RESUMO

RESUMO

A cytogenetic analysis of thirteen specimens of Bryconamericus aff. Iheringii revealed a diploid number of 52 chromosomes and a karyotype of 8M+22SM+10ST+12A with a fundamental number (FN) of 92. The nucleolus organizer regions (NORs) were studied by means of AgNO3 and CMA3 staining as well as by FISH using an 18S rDNA probe. NORs were found to be located at the terminal position on the short arm of the submetacentric chromosome pair. C-banding showed strong telomeric and centromeric staining in the majority of the chromosomes, and a similar pattern was observed after treatment with AluI restriction enzyme

Subject(s)

Animals; Cytogenetic Analysis; DNA, Ribosomal; Fishes; Nucleolus Organizer Region; Chromosome Banding; In Situ Hybridization, Fluorescence

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Full text: Available Index: LILACS (Americas) Main subject: DNA, Ribosomal / Cytogenetic Analysis / Fishes / Nucleolus Organizer Region Limits: Animals Language: English Journal: Genet. mol. biol Journal subject: Genetics Year: 2003 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual de Londrina/BR

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