201 



alcohols and phenods. In earlier work on the components in the cotton bud 

 essential oil that contributed to attraction, a mixture of B-bisabolol, B- 

 carophyllene oxide, rs-caryophyllene, a-pinene, and limonene effectively 

 attracted boll weevils in laboratory bioasaays. Later, several mixtures of 

 commercially available terpenoids proved to be nearly as attractive as ex- 

 tracts of cotton buds. In view of the diversity of the compounds found in 

 the air space volatiles, it was concluded that no individual chemical is 

 likely to be attractive in itself. 



390. ; Tliompson, A. C; Gueldner, R. C; and Henson, R. D. 1974. Analysis 

 of the antimicrobial agents, potassium sorbate and methyl-p-hydroxy- 

 benzoate, in boll weevil diets. J. Econ. Entomol. 67: 147-149. 

 Analytical procedures were developed to determine whether the antimicrobial 

 agents methyl-£-hydrcxybenzoate and potassium sorbate had been constituted 

 properly in 2 diets for larvae of Anthonomus grandis Boheman and whether 

 they were stable to the heat provided by autoclaving or flash sterilizing, 

 to pH 5.5, to other dietary constituents, and to continued dispersal in the 

 diet at room temperature for 2 weeks. Both TLC-UV and GLC procedures gave 

 average recoveries above 95%. Thus, no degradation problems were evident. 

 These agents are used to preserve foodatuffg^ from molds, yeasts, and bacteria. 



'^T. ; Thompson, A. C. ; Gueldner, R. C; and Minyard, J. P. 19^2. Volatile 



constituents of the boll weevil. J. Insect Physiol. 18: 79-86. 

 When the distillable oil from adult boll weevils, Anthonomus g randis , of 

 both sexes was Investigated with an integrated gas chromatography-mass 

 spectrometry system, evidence was obtained for a number of mono- and sesquiter- 

 pene hydrocarbons and some substituted anilines including o-toluidine; for 

 some Cc and Cr alcohols and monoterpene alcohols; and for at least one ses- 

 quiterpene alcohol. The major componnts were a series of alkanes, alkenes. 



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