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| Borges,Andreia A.; Humann,Fernanda C.; Campos,Lucio A. Oliveira; Tavares,Mara G.; Hartfelder,Klaus. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stingless bee; Real time PCR; Caste; Diploid male; Differential gene expression. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400025 |
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| Cardoso-Júnior,Carlos A.M.; Fujimura,Patrícia Tieme; Santos-Júnior,Célio Dias; Borges,Naiara Araújo; Ueira-Vieira,Carlos; Hartfelder,Klaus; Goulart,Luiz Ricardo; Bonetti,Ana Maria. |
| Abstract Stingless bees of the genus Melipona, have long been considered an enigmatic case among social insects for their mode of caste determination, where in addition to larval food type and quantity, the genotype also has a saying, as proposed over 50 years ago by Warwick E. Kerr. Several attempts have since tried to test his Mendelian two-loci/two-alleles segregation hypothesis, but only recently a single gene crucial for sex determination in bees was evidenced to be sex-specifically spliced and also caste-specifically expressed in a Melipona species. Since alternative splicing is frequently associated with epigenetic marks, and the epigenetic status plays a major role in setting the caste phenotype in the honey bee, we investigated here epigenetic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA methylation; Histone modification; Caste development; Social bees; Genetic caste determination. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100061 |
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