Aspectos semioquímicos e visuais no comportamento de ovipostura em Chrysomya Megacephala (Fabricius) (Diptera: Calliphoridae)

• Ano de defesa: 2013
• Autor(a) principal: Corrêa, Leonardo Freitas [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Diptera; Diptero; Ovos; Ecologia quimica; Mosca-varejeira - Larva; Animais - Comportamento
• Link de acesso: http://hdl.handle.net/11449/108744

The use of ephemeral and discrete oviposition substrates represents a unique challenge for calliphorid females, which need to maximize the benefits obtained by the aggregation of immatures and minimize the adverse effects of intra and interspecific competition for resources, to ensure the growth and development of their progeny. Semiochemicals, chemicals that mediate interactions between organisms, when present in eggs may influence the choice of oviposition site by other females, acting as stimulants. This work aimed to elucidate some aspects of the influence of egg batch presence in Chrysomya megacephala oviposition behavior. A series of laboratory experiments was held and showed that (1) fresh eggs presence do not change the time needed to start new ovipositions; (2) fresh eggs presence annul the preference for a particular oviposition substrate; (3) the stimuli for oviposition do not operate in an interspecific manner, (4) extracts of fresh eggs do not exert influence on oviposition of other individuals; (5) eggs near larvae time of hatching do not exert influence on the oviposition behavior of other females; (6) the temporal disparity in oviposition has deleterious consequences for the offspring. These results assist a better understanding in the aggregative oviposition behavior of C. megacephala and of its possible consequences for the population dynamics of this species