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A mosca-das-frutas, Ceratitis capitata Wiedemann e uma especie polifaga que causa danos a fruticultura. Para seu controle, uma das tecnicas utilizada e a tecnica do inseto esteril (TIE), que consiste na liberacao de milhares de machos estereis no campo para competirem com os selvagens pelas femeas. O sucesso desta tecnica esta associado a habilidade do macho esteril em ser aceito pela femea e tambem em prevenir a recopula da mesma. Neste trabalho avaliou-se a influencia do status reprodutivo do macho - virgem ou acasalado - no seu sucesso de copula e na sua capacidade de inibir a recopula das femeas. Foram avaliados o tempo de latencia e o tempo de duracao da copula de acasalamentos com os dois tipos de machos. Para verificar a capacidade de inibicao de recopula, femeas acasaladas com machos virgens ou acasalados foram expostas a novos machos virgens um dia apos o primeiro acasalamento e observadas quanto a ocorrencia de recopula. Os resultados evidenciaram que machos de diferentes status reprodutivos apresentaram similaridades quanto ao sucesso de acasalamento e a capacidade de inibir a recopula das femeas, alem de tempos similares de latencia para a copula e duracao da mesma. Tais dados sugerem que, assumindo-se que os machos estereis apresentam a mesma biologia basica de machos nao estereis, na aplicacao da TIE, machos que ja acasalaram uma vez no campo podem continuar a ter a mesma eficiencia que os virgens quanto ao sucesso de acasalamento e a capacidade de inibicao de recopula das femeas. Virgin and Mated Males of Ceratitis capitata Wiedemann (Diptera: Tephritidae) Have the Same Mating Success and the Same Ability to Inhibit Female Remating? Abstract. Ceratitis capitata Wiedemann is a polyphagous species that damages fruits and affects their production and consumption. One of the techniques to manage this pest is the Sterile Insect Technique, which consists in releasing sterile males in nature to compete with wild males for mating. The success of this technique is associated with the ability of sterile male in being selected by the female and in preventing female remating with other males. This paper aims to evaluate the influence of male reproductive status in mating success and in female remating inhibition. Tests for evaluating the latency to mate and copula duration were performed to evaluate latency to mate and copula duration based on different male status. In remating inhibition tests, females mated with virgin and mated males, were exposed to other males one day after the first mating so the rate of remating could be evaluated. The results showed that males of different reproductive status had no differences in mating success and in female remating inhibition. The latency to mate and copula duration were similar for both male status as well. Our results suggest that, assuming that the sterile males have the same basic biology of no sterile males, in SIT, after released in nature, mated males can have the same success in mating and female remating inhibition as virgin males.

entomobrasilis

Machos Virgens e Acasalados de Ceratitis capitata Wiedemann (Diptera: Tephritidae) Apresentam o mesmo Sucesso de Cópula e a mesma Capacidade de Inibição de Recópula das Fêmeas?