Evaluation of the Attractant Effect of (Solanales: Solanaceae) on Gravid Female Adults of (Diptera: Tephritidae) and Screening of Attractant Volatiles.

(Walker) (Diptera: Tephritidae) is a pest seriously harmful to Solanaceae crops and was found to oviposit on the pepino melon (Aiton). To date, the differences in the ability of the fruits of and other Solanaceae crops to attract gravid females have seldom been reported. Oviposition and trapping bioassays were performed to clarify whether such differences existed. A combination of GC-MS and the Y-tube olfactometer system was used to identify and determine the compounds inducing behavioral responses in gravid females to the volatile odors of . The results show that odors play a role in attracting gravid females. The odors of Solanaceae crops influence their ability to attract these organisms. The nine compounds from the volatiles of induce tendency or repellency responses in gravid females. Hexyl acetate, butyl acetate, amyl actate, and isoamyl acetate caused tendency behavior in gravid females, while hexyl hexanoate, butyl isovalerate, butyl valerate, and isoamyl hexanoate caused repellency behavior. Heptyl acetate caused repellency behavior in gravid females at higher concentrations (5 mg/mL) but caused tendency behavior at a low concentration (0.5 mg/mL). These results suggest that vigilance against the harm caused by is required during the cultivation of . The nine compounds of the volatile odors of could help to develop attractants and repellents for gravid females. These results are beneficial for preventing females from harming , developing attractants and repellents for females, and establishing a system of ecological control for females.