Aspectos da biologia reprodutiva de Bombus morio (Swederus) e Bombus atratus Franklin (Hymenoptera, Apidae)

• Ano de defesa: 2008
• Autor(a) principal: Benavides, Marlene Lucía Aguilar
• Orientador(a): Campos, Lúcio Antonio de Oliveira
• Banca de defesa: Message, Dejair , Hora, Riviane Rodrigues
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Entomologia
• Departamento: Ciência entomológica; Tecnologia entomológica
• País: BR
• Palavras-chave em Português: Bombus; Rainhas; Criação
• Palavras-chave em Inglês: Bombus; Queens
• Área do conhecimento CNPq: CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
• Link de acesso: http://locus.ufv.br/handle/123456789/3865

The genus Bombus in the entire world it has an ecological and economic importance; these bees are being used as pollinators of many cultures as tomatoe, pumpkin, strawberry among others. But the fact of that these bees have some levels of aggressiveness, they make that its nests are destroyed leading to the extinguishing risk. Many works already had been developed for the knowledge of the biology of this group. The objective of this study was to study some aspects of the establishment of colonies in captivity conditions and of the reproductive biology of B. morio and B. atratus. Some methods of induce of oviposition of queens of the two species had been made. Males of different ages of B. atratus had been dissected and the age of sexual maturation was determined. Also some aspects in the reproduction and activation of the ovaries of queens in absence of mating of B. morio had been studied, through the histology and histochemistry tests. The results had contributed for the common knowledge of the rearing in captivity and the reproductive biology of the studied species. It was determined that the introduction of immature, of workers or a queen sister (in these species), induce the queens to star oviposition. Of the 110 tested queens, 80% had star oviposition and produced immature. Only two queens (B. atratus) obtained to produce adults (males). Males of B. atratus from the seventh day of life, the testicles were total reduced and the seminal vesicles are full of spermatozoa, showing that in this age is sexually mature. This suggests that in the attempts of mating in laboratory, male of this age should be used. In the case of the queens, the study of behaviour of queens and ovarian development showed that its ovaries are active from five days after the emergency thus remaining for until more than 30 days. This suggests that for attempts of mating in laboratory, queens of 10 days up to 40 days of age should be used. The results of the observation of nests and start colonies from queens, showed that queens of these species have a long time of activation of its ovaries (more of 30 days) and as consequence of this, the queens can remain more time in the nests and to star oviposition without mating. The presence of immature or individuals of the same specie or the other species the same genus makes that it accelerate the process of start oviposition. It is necessary to make studies related the alimentary diets to guarantee the continuity in the produced colonies and of the queens that start oviposition in the laboratory.