Cytogenetic characterization of two species of Frieseomelitta Ihering, 1912 (Hymenoptera, Apidae, Meliponini)

Genetics and Molecular Biology

Antônio F. Carvalho¹  Marco Antônio Costa¹ 

[1] ,Universidade Estadual de Santa Cruz Departamento de Ciências Biológicas Ilhéus Bahia ,Brazil

关键词: Hymenoptera;    Frieseomelitta;    interspecific differentiation;    C-banding;    heterochromatin;   

DOI  :  10.1590/S1415-47572011005000010

来源: SciELO

【 摘 要 】

The cytogenetic analysis of Frieseomelitta dispar and F. francoi revealed the chromosome numbers 2n = 30 and n = 15 and a karyotypic formula 2K = 4M+2Mt+4A+20A M. The number of chromosomes observed was consistent with those reported for other Frieseomelitta species. The occurrence of the Mt chromosome and other features of the karyotype formulae suggest a close relationship between F. dispar, F. francoi and F. varia. Nevertheless, it was possible to differentiate the karyotypes of the species by DAPI/CMA3 staining, which revealed GC-rich regions on two chromosome pairs of F. dispar: one acrocentric and one pseudoacrocentric. In F. francoi, the same kinds of regions were observed on a pair of metacentrics and on a pair of acrocentrics. Our analysis also confirmed the chromosome number conservation in Frieseomelitta and suggests that infrequent pericentric inversion could constitute a synapomorphy for the group including F. dispar, F. francoi, and F. varia.

【 授权许可】

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