Bulletin of Insectology (2002) 55, 13-19

Claudio Ioriatti, Loris Flaim and Matteo Zini (2002)
Use of sex pheromone traps to monitor insecticide resistance in European Grape Moth Lobesia botrana (Lepidoptera Tortricidae)
Bulletin of Insectology 55 (1), 13-19
Abstract: The technique of the direct insecticide incorporation in the glue of the pheromone baited trap liners was adopted to monitor the susceptibility of the European Grape Moth (EGM), Lobesia botrana (Denis et Schiffermuller) to Azinphos-methyl. Bioassays were carried out on one EGM strain reared in the laboratory and on two EGM field strains from vineyards of the northeast of Italy. It was therefore evaluated the effect on the response with regard to the weight, the age, the sex and the position of the captured EGM males. The laboratory strain and one of the field were also analysed both according to this technique and larvae topical treatment. Weight and moth position did not influence the response to the test. The EGM females resulted less susceptible than the males; this does not invalidate the method since it is based on the use of male specimens only. Concerning the age it was noticed a limited decrease of the lethal concentrations related to the age growing, which indicates the negative effect of the age on the EGM survival. Differences in the susceptibility between field and laboratory strain, whether using adults or whether larvae in the tests were detected. The similarity of the two resistance factors confirms the method's reliability to detect the resistance of the EGM to the Azinphos-methyl.
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Database assignments for author(s): Claudio Ioriatti

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lobesia botrana		Italy