Fatty Acids in Total Lipid Extracts of Insecticide-Treated Boll Weevils That Survived or Died123

Abstract
Boll weevils, Anthonomus grandis Boheman, from field collections or reared in the laboratory were treated topically or by a dry-film technique with toxaphene, toxaphene + DDT, carbaryl, or azinphosmethyl. Total lipids were extracted from weevils that survived and died from this treatment and the fatty acids in the extracts were determined. Analysis of the fatty acids with gas-liquid chromatography indicated significantly higher levels of stearic, linoleic, and linolenic acids in dead weevils and higher levels of palmitic and oleic acids in the survivors.