199 



386. ; Rollins, C. S.; Thompson, A. C. ; and Gueldner, R. C. 1975. 

 Pheromone production of male boll weevil treated with chemosterl- 

 lants. J. Econ. Entomol. 68: 587-591. 



The production of the 4 monoterpene compounds that comprise the pheromone 

 of Anthonomus grandis Boheman (I, (+) -cis-2-isopropenyl-l-methylcyclo- 

 butaneethanol; II, (Z)-3,3-dimethyl-Al »S-cyclohexancethanol; III, (Z)--3,3- 

 dimethyl-A^'^-cyclohexaneacetaldehyde; and IV, (E)-3,3-dimethyl-A^ 'C"- 

 cyclohexaneacetaldehyde) was determined from amounts in the feces of male 

 weevils fed diets with and without chemosterilants. Cotton buds, the natural 

 food source of the insect, promoted a higher level of paeromone biosynthesis 

 bye the insects than did the laboratory diet, mostly because weevils fed 

 the laboratory diet produced lesser amounts of the aldehydes (III and IV). 

 Insects fed apholate or busulfan produced markedly less of the alcohols (I 

 and II) compared with insects fed cotton buds or diet without chemosteri- 

 lants. Furthermore, the chemosterilants caused a proportional decrease in 

 the formation of II relative to I and III. 



387. ; Thompson, A. C. ; and Gueldner, R. C. 1973. The boll weevil-cotton 

 plant complex. Toxicol. Environ. Chera. Rev. 1: 291-351. 



The boll weevil, Anthonomus gvandis Boheman was introduced from Mexico 

 into the United States about 1892. More than three-fourths of all insect 

 losses to cotton in this country have been attributed to this insect, and 

 it is generally agreed that cotton cannot be profitably grown in areas where 

 it occurs without adequate control measures. This review summarizes the 

 chemically oriented research conducted on this plant-insect complex during 

 the past seventy years with emphasis on the program conducted since 1962 

 at the Boll Weevil Research Laboratory. Plant-insect relationships, host 

 plant resistance, feeding stimulants, plant attractants, and plant constituents 

 are discussed. Insect-insect relationships treated include insecticides, 





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