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BIBTEX RIS

Cytogenetic characterization of Partamona cupira (Hymenoptera, Apidae) by fluorochromes

2010; Brazilian Society of Genetics; Volume: 33; Issue: 2 Linguagem: Inglês

10.1590/s1415-47572010005000029

ISSN

1678-4685

Autores

Jefferson de Brito Marthe, Sílvia das Graças Pompolo, Lúcio Antônio de Oliveira Campos, Tânia Maria Fernandes Salomão, Mara Garcia Tavares,

Tópico(s)

Plant and animal studies

Resumo

Four colonies of the stingless bee Partamona cupira (Hymenoptera: Apidae) were cytogenetically analyzed using conventional staining and the fluorochromes CMA(3) e DAPI. The females have 2n = 34 chromosomes (2K = 32 M¯+2 A¯). Some females, however, presented an additional large B acrocentric chromosome, to a total of 2n = 35. Chromosome B and the chromosomal pairs 2, 9 and 10 showed CMA (3) (+) bands, indicating an excess of CG base-pairs. A clear association was verified between the P. helleri B chromosome SCAR marker and the presence of a B chromosome in P. cupira. The data obtained suggests that B chromosomes in P. helleri and P. cupira share a common origin.

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