Pest Management Science (2005) 61, 577-582

Emmanouil Roditakis, Nikos E. Roditakis and Anastasia Tsagkarakou (2005)
Insecticide resistance in Bemisia tabaci (Homoptera: Aleyrodidae) populations from Crete
Pest Management Science 61 (6), 577-582
Abstract: The resistance levels to alpha-cypermethrin, bifenthrin, pirimiphos-methyl, endosulfan and imidacloprid were determined in Bemisia tabaci (Gennadius) from Crete. Five B. tabaci populations collected from greenhouse and outdoor crops were bioassayed and compared with a reference susceptible strain. Bemisia tabaci collected in a floriculture greenhouse exhibited the highest resistance against all insecticides: at LC₅₀, resistance factors were 23-fold for bifenthrin, 80-fold for alpha- cypermethrin, 18-fold for pirimiphos-methyl, 58-fold for endosulfan and 730-fold for imidacloprid. A population collected on outdoor melons was more susceptible than the reference strain against all insecticides tested, suggesting the occurrence of local highly susceptible B tabaci populations in 'refugia'. In pairwise comparisons of resistance levels, correlation was observed between the LC₅₀ values of the pyrethroid insecticides bifenthrin and alpha-cypermethrin.
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Link to article at publishers website
Database assignments for author(s): Emmanouil Roditakis, Anastasia Tsagkarakou

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci		Greece