Ability of sterile males to inhibit female remating in the melon fly Zeugodacus cucurbitae (Diptera: Tephritidae)
Keywords:
sterile insect technique, fruit fly, female remating, refractory periodAbstract
This study investigated the ability of mass-reared, sterile males of a genetic sexing strain to inhibit remating by wild females in the melon fly Zeugodacus cucurbitae. Virgin wild females were initially mated to either virgin wild or sterile males, and then given the opportunity to remate with wild males at 1, 10, or 20 d after the initial mating. Two-way ANOVA revealed that both male type and time since initial mating significantly influenced female remating levels. Initial matings with wild males resulted in lower female remating than initial matings with sterile males. Female remating levels increased with time elapsed since the initial mating, regardless of whether the first mate was a wild or sterile male.
Sumario
Este estudio investigó la capacidad de los machos estériles criados en masa de una cepa genética sexual para inhibir el reapareamiento de hembras silvestres de la mosca del melón Zeugodacus cucurbitae. Las hembras vírgenes silvestres se aparearon inicialmente con machos vírgenes silvestres o estériles, y luego se les dio la oportunidad de reaparearse con machos silvestres a 1, 10 o 20 días después del apareamiento inicial. El ANOVA de dos vías reveló que tanto la clase de macho como el tiempo desde el apareamiento inicial influyeron significativamente en los niveles del reapareamiento de las hembras. Los apareamientos iniciales con machos silvestres resultaron en menos reapareamientos en las hembras que los apareamientos iniciales con machos estériles. Los niveles de reapareamientos de las hembras aumentaron con el tiempo transcurrido desde el apareamiento inicial, independientemente de si el primer compañero era un macho silvestres o estéril.
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