Oviposition deterrent effects of several plant essential oils on Bactrocera dorsalis (Diptera: Tephritidae).
Wang YuZan, Ling Bing, Lu YongYue, Zeng Ling, Xu YiJuan
Author Affiliation: Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642, China.
Journal of South China Agricultural University 31 : 22-27
Abstract : The oviposition deterrent effects of six kinds of plant essential oils on Bactrocera dorsalis were evaluated. The results showed that oviposition deterrent rates of Mangifera indica and Psidium guajava which dipped in the oil of Cymbopogon nardus, Cinnamomum camphora, Ilex yuiana, Capsicum annuum were all above 50% and their puncture numbers were significantly lower than the control and the other oils included Salvia sclarea and Cinnamomum cassia. The oviposition deterrents were more efficiency for C. nardus and I. yuiana as the concentration increased. It was confirmed that 7 000 µg/mL was the best concentration used as oviposition deterrents, while the best concentration for C. annuum and C. camphora oils were 5 000 µg/mL. The persistent period of C. annuum oil lasting 6 days was the longest, while the persistent period of C. camphora and I. yuiana oils lasted 4 days and only 1 day for C. nardus oil. The number of eggs that oriental fruit fly laid on Averrhoa carambola dipped in the oils of C. annuum, C. camphora and I. yuiana were significantly lower than the control in the large space.