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https://locus.ufv.br//handle/123456789/12046
Tipo: | Artigo |
Título: | Transcript levels of ten caste-related genes in adult diploid males of Melipona quadrifasciata (Hymenoptera, Apidae) - A comparison with haploid males, queens and workers |
Autor(es): | Borges, Andreia A. Humann, Fernanda C. Campos, Lucio A. Oliveira Tavares, Mara G. Hartfelder, Klaus |
Abstract: | In Hymenoptera, homozygosity at the sex locus results in the production of diploid males. In social species, these pose a double burden by having low fitness and drawing resources normally spent for increasing the work force of a colony. Yet, diploid males are of academic interest as they can elucidate effects of ploidy (normal males are haploid, whereas the female castes, the queens and workers, are diploid) on morphology and life history. Herein we investigated expression levels of ten caste-related genes in the stingless bee Melipona quadrifasciata, comparing newly emerged and 5-day-old diploid males with haploid males, queens and workers. In diploid males, transcript levels for dunce and paramyosin were increased during the first five days of adult life, while those for diacylglycerol kinase and the transcriptional co-repressor groucho diminished. Two general trends were apparent, (i) gene expression patterns in diploid males were overall more similar to haploid ones and workers than to queens, and (ii) in queens and workers, more genes were up-regulated after emergence until day five, whereas in diploid and especially so in haploid males more genes were down-regulated. This difference between the sexes may be related to longevity, which is much longer in females than in males. |
Palavras-chave: | Stingless bees Real time PCR Caste Diploid male Differential gene expression |
Editor: | Genetics and Molecular Biology |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S1415-47572011005000050 http://www.locus.ufv.br/handle/123456789/12046 |
Data do documento: | 15-Set-2011 |
Aparece nas coleções: | Artigos |
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2011-053.pdf | Texto completo | 771,69 kB | Adobe PDF | Visualizar/Abrir |
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