Abstract
Oviposition behavior in non-irradiated and irradiated melon fly, Dacus cucurbitae COQUILLETT, was studiedunder laboratory conditions. A few irradiated female melon flies inserted their ovipositors into slices of host fruits (melon and watermelon) and artificial oviposition devices. The quantity and frequency of ovipositional “acts” for irradiated flies was much lower than that of the non-irradiated ones. “Number” indicates the quantity of females which engaged in oviposition behavior per 1, 000 females per 15min. “Frequency” indicates the total number of acts in varying behavioral modes per 1, 000 females per 15min.