Please use this identifier to cite or link to this item:
Title: Comparative cytogenetics of Carnegiella marthae and Carnegiella strigata (Characiformes, Gasteropelecidae) and description of a ZZ/ZW sex chromosome system
Authors: Terêncio, Maria Leandra
Schneider, Carlos Henrique
Gross, Maria Claudia
Silva, Adailton Moreira da
Feldberg, Eliana
Porto, Jorge Ivan Rebelo
Keywords: Animals Cell
C Banding
Carnegiella Marthae
Carnegiella Strigata
Chromosome Analysis
Chromosome Banding Pattern
Chromosome Nor
Chromosome Size
Comparative Study
Controlled Study
Fish Genetics
Giemsa Stain
Sex Chromosome
Silver Staining
Species Comparison
Carnegiella Marthae
Carnegiella Strigata
Issue Date: 2008
metadata.dc.publisher.journal: Genetics and Molecular Biology
metadata.dc.relation.ispartof: Volume 31, Número 1 SUPPL. 1, Pags. 231-234
Abstract: Comparative cytogenetic analyses of hatchetfishes Camegiella marthae and Camegiella strigata (Gasteropelecidae) from the Rio Negro basin were performed using conventional Giemsa staining, silver (Ag)-staining and C-banding. The diploid chromosome numbers of both species equaled 2n = 50 but their karyotypes were distinct. We found evidence for sex chromosomes in C. marthae since karyotype of males presented 20 M + 12 SM + 4 ST + 14 A and ZZ ST chromosomes while the females presented 20 M + 12 SM + 4 ST + 14 A and ZW ST chromosomes of distinct size. Conversely, C. strigata presented 4 M + 4 SM + 2 ST + 40 A chromosomes without sex chromosome heteromorphism. Karyotypes of both species had two NOR-bearing SM chromosomes of distinct size indicating the presence of multiple NOR phenotypes. The sex chromosome pair had specific C-banding pattern allowing identification of both Z and W. This heteromorphic system has previously been described for the gasteropelecids. Copyright © 2008, Sociedade Brasileira de Genética.
metadata.dc.identifier.doi: 10.1590/S1415-47572008000200011
Appears in Collections:Artigos

Files in This Item:
File Description SizeFormat 
artigo-inpa.pdf124,43 kBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons