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| Author(s): |
Camila Moreira Costa
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba. |
| Institution: | Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) |
| Defense date: | 2014-01-29 |
| Examining board members: |
José Maurício Simões Bento;
Fernando Luis Cônsoli;
Cláudio Roberto Franco
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| Advisor: | José Maurício Simões Bento |
| Abstract | |
Researches about insects mating systems are important to understand the aspects of reproductive behavior evolution. Mating systems are usually grouped according to the number of mates during mating. Insect females mating system are classified as monogamy when there is only one copulation per male while polyandry refers to multiple mating with different males or with the same male (repeated mating). There is a lack of researches dealing with mating systems in species like the coffee berry borer, Hypothenemus hampei, which spend most of its life cycle (egg to adult) inside of the coffee berry and has a multivoltine cycle. This research aimed to study the mating system of H. hampei females, verifying the existence of polyandry and evaluating the effects of the multiple and repeated mating on the bioecology of the female and its offspring. The current study showed for the first time the occurrence of polyandry on females of H. hampei. The number of remating in colonizing females was higher than in the females under oviposition, thus the female physiological condition is crucial on remating behavior. The copula duration was shorter in females under oviposition than in the colonizing females. Fecundity was negatively affected by polyandry suggesting the existence of costs associated with multiple mating by females. Longevity were not influenced by the mating systems, showing that polyandry does not affect female lifetime. Although egg hatching was superior in polyandry compared to monogamy, the larva:adult recovery rate in H. hampei was not affected by the mating system. (AU) | |
| FAPESP's process: | 12/16391-6 - Influence of the mating system on bioecology of coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae) |
| Grantee: | Camila Moreira Costa |
| Support Opportunities: | Scholarships in Brazil - Master |