Acceptability and Toxicity of Poisoned Baits to House Flies Resistant to Organophosphorus Insecticides

1 April 1959

journal article
research article
Published by Oxford University Press (OUP) in Journal of Economic Entomology

Vol. 52 (2) , 345-346
https://doi.org/10.1093/jee/52.2.345

Abstract

Radioactive baits prepared by mixing P32-phosphoric acid in sugar bait containing 1% of either malathion or Dipterex were tested against normal and Grothe (malathion-resistant) houseflies (Musca domestica) to determine whether resistance to organophosphorus insecticide baits was behavioral as well as physiological. After 24-hour exposure to the malathion all the normal flies (40% of the Grothe females and 85% of the Grothe males) were dead, whereas all the flies exposed to the Dipterex died. Survival of the Grothe females and data on the amount of bait consumed indicated that both physiological and behavioral resistance to malathion were involved.

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