Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/20044
Tipo: Artigo
Título: Juvenile hormone downregulates vitellogenin production in Ectatomma tuberculatum (Hymenoptera: Formicidae) sterile workers
Autor(es): Azevedo, Dihego Oliveira
Paula, Sérgio Oliveira de
Zanuncio, José Cola
Martinez, Luis Carlos
Serrão, José Eduardo
Abstract: In the ant Ectatomma tuberculatum (Olivier 1792), workers have active ovaries and lay trophic eggs that are eaten by the queen and larvae. Vitellogenins are the main proteins found in the eggs of insects and are the source of nutrients for the embryo in the fertilized eggs and for adults in the trophic eggs. In social insects, vitellogenin titres vary between castes and affect reproductive social status, nursing, foraging, longevity, somatic maintenance, and immunity. In most insects, vitellogenin synthesis is mainly regulated by juvenile hormone. However, in non-reproductive worker ants, this relationship is poorly characterized. This study determined the effects of juvenile hormone on vitellogenin synthesis in non-reproductive E. tuberculatum workers. Juvenile hormone was topically applied onto workers, and the effect on vitellogenin synthesis in the fat body and vitellogenin titres in the haemolymph were analysed by ELISA and qPCR. Juvenile hormone downregulated protein synthesis and reduced vitellogenin titres in the haemolymph, suggesting that in workers of E. tuberculatum, juvenile hormone loses its gonadotrophic function.
Palavras-chave: Vitellin
Age polyethism
Ant
Hymenoptera
Editor: Journal of Experimental Biology
Tipo de Acesso: Open Access
URI: http://doi.org/10.1242/jeb.127712
http://www.locus.ufv.br/handle/123456789/20044
Data do documento: 13-Nov-2015
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