Influence of the mass rearing on the mating behavior of the melon fly, Dacus cucurbitae Coquillett (Diptera: Tephritidae)

雄瓜蝇在那里产卵，每只雄蝇都在上面竞争雌性前来交配的好的求偶地点。群养(R)雄性在LEK上的竞争能力弱于野生雄性。此外，雌性与R雄性交配的交配率较高，交配持续时间较短，表明R雄性在交配后的竞争能力上也低于野生雄性。发现了两种交配类型：1)交配类型：一种是雄性在与雌性交配一段时间后进入翅膀振动，然后试图上马交配；另一种是非交配类型，即雄性在相遇后试图上马，但没有翅膀振动。R-雄虫只有在非交配类型时才能与野生雌性交配，而在交配类型时不能交配，这表明野生雌性通过雄性的求偶翅膀振动而歧视R-雄性。在人工条件下饲养昆虫时，可能会有一定程度的驯化，驯化会导致饲养昆虫质量的恶化。因此，如果我们要使用昆虫不育技术，释放程序应该尽可能短的时间终止。

Males of the melon fly make lek on which each male compete for good calling site where a female comes and copulation occurs. Mass-reared(R) males were inferior to the wild males in competing ability among males on lek. More over the rate of remating was higher and duration to remating was shorter when the females mated with R-males, showing that R-males were also inferior to the wild males in competing ability of post copulation.Two types of mating were discovered: 1) courtship type where a male engages in wing vibration after encounter with a female for some time and then try to mount for copulation, and non-courtship type where a male try to mount just after encounter without wing vibration. R-males could copulate with wild females only when engaging in non-courtship type but could not when engaging in courting type, suggesting that wild females discriminated against R-males through the courting wing vibration of males.When insects are reared under artificial conditions, some level of domestication would be expected, and the domestication could resulted in deterioration in quality of reared insects. So if we want to use the sterile insect technique, the releasing program should be terminated as possible as short.