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Olfactometery responses of Macrolophus pygmaeus to residues of some current insecticides against tomato leaf miner, Tuta absoluta Safari Monjezi 1 P., yar ahmadi 1 F.
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عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
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چکیده
The predatory bug, Macrolophus pygmaeus Rambur (Heteroptera: Miridae), is a generalist predator species which originates in Mediterranean and occurs in the Palearctic region. The predator is used in control of various pests including tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera, Gelechiidae) in integrate pest management program of tomato greenhouses. Increased application of pesticides in greenhouses results in adverse side effects on natural enemies. One of the side effects of the pesticide residues in biological control is the compound repellency effects. In this study, repellency effects of Neem-Azal, Proclim fit and Avant to M. pygmaeus were investigated by olfactometery trials. For this propose, 25 females and 25 males of the predatory bug were collected from rearing colony and exposed to sub lethal vapors of the tested insecticides in olfactometer device for 10 minutes. Then, the insect responses to the various insecticide vapors were recorded. Results indicated that male and female of the predatory bugs significantly attracted to Neem-Azal treatment while Proclim fit and Avant had repellent effect on the predator. Therefore, integrated use of the botanical insecticide, Neem-Azal, with the tested predator can be useful in IPM program of tomato leaf miner.
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