Cytogenetic analysis of the Amazon stingless bee Melipona seminigra merrillae reveals different chromosome number for the genus
| Autor: | Izaura Bezerra Francini, Maria Claudia Gross, Carlos Gustavo Nunes-Silva, Gislene Almeida Carvalho-Zilse |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Scientia Agricola, Vol 68, Iss 5, Pp 592-593 (2011) |
| Druh dokumentu: | article |
| ISSN: | 0103-9016 1678-992X |
| DOI: | 10.1590/S0103-90162011000500012 |
| Popis: | Cytogenetic analysis of the Amazon stingless bee Melipona seminigra merrillae, by conventional Giemsa staining and C-banding, revealed a different chromosome number for Melipona: 2n = 22 for females and diploid drones while the haploid drones present n = 11. There is no evidence of B chromosomes. This result contrasts with previous studies, in which the chromosome number of 19 Melipona species was determined as 2n = 18 for females and n = 9 for haploid males. Based on cytogenetic information available for other Melipona species, we propose that M. s. merrillae has a more derived diploid number. This indicates that chromosome number is not a conservative characteristic within the genus as previously thought. Cytogenetic data for stingless bees are scarce, especially in Amazon region. Additional studies will be very important in order to promote Melipona karyoevolution discussion and consequently a taxonomy review. |
| Databáze: | Directory of Open Access Journals |
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