Cytogenetic studies on holocentric chromosomes of five species of triatomines (Heteroptera: Reduviidae)
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Data
1997-01-01
Autores
Tavares, M. G.
deAzeredoOliveira, MTV
Título da Revista
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Editor
Faculty Press
Resumo
The chromosome number and meiotic cycle of triatomines were investigated. All five species presented the same diploid chromosome number, 2n = 22 (20A + XY in the male). Phylogenetic relationships based on chromosomal evidence and C-banded karyotypes in the subfamily are discussed. It is suggested that differences in DNA content are mainly due to variations in the amount of C-heterochromatin, which may be interpreted as loss and/or gain of C-regions. This interpretation is supported by the presence of meiotic and mitotic chromocentres which facilitate the transfer of C-positive material.
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Palavras-chave
C-banding, Chagas' disease, Triatoma, Cytogenetics, holocentric chromosomes
Como citar
Cytobios. Cambridge: Faculty Press, v. 89, n. 356, p. 51-62, 1997.