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Resistance to Organophosphorus Compounds in the Two-spotted Spider Mite: Two Different Mechanisms of Resistance


IT is known that a number of spider mite populations can develop a high degree of resistance against organo-phosphorus compounds1–3. The mechanism of organo-phosphorus-resistance has been extensively examined in insect species, and enough evidence has accumulated to indicate that many strains of resistant insects developed abilities to detoxify the organophosphorus compounds by which they have been selected4,5. In no case, however, has it been shown that treatments with organophosphorus compounds resulted in a selection of individuals with a modified cholinesterase (ChE), which is known to be the actual target of organophosphorus poisoning.

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Voss, G., MATSUMURA, F. Resistance to Organophosphorus Compounds in the Two-spotted Spider Mite: Two Different Mechanisms of Resistance. Nature 202, 319–320 (1964).

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