Evidence of an XX/XY sex chromosome system in the fish Dormitator maculatus (Teleostei, Eleotrididae)
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Data
2006-01-01
Autores
Oliveira, Claudio [UNESP]
Toledo, Lurdes Foresti de Almeida
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Genética
Resumo
The fish Dormitator maculatus has a chromosomes number of 2n = 46, females having a karyotype of 14 M, 28 SM, 2 ST and 2A and males 13 M, 28 SM, 3 ST and 2A. The presence of a heteromorphic pair in the males and a corresponding homomorphic pair in the females suggest the occurrence of an XX/XY sex chromosome system in D. maculatus. The putative X chromosome has a pericentromeric C-band positive segment and the putative Y chromosome a C-band positive short arm.
Descrição
Palavras-chave
fish cytogenetics, karyotypes, Ag-NORs, C-band, sex chromosomes
Como citar
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 4, p. 653-655, 2006.