

358 



Anthonomus grandis Boheman (Coleoptera: Curculionidae) was studied to deter- 

 mine the effects of diapause and starvation on trehalose and glycogen levels. 

 When corrections were made for the greater dry weight of diapausing boll 

 weevils, there was little if any difference in trehalose levels between 

 diapausing and reproducing adults and between males and females. The 

 effects of starvation also were small because trehalose levels in weevils 

 starved for 12-20 hours were about normal. Glycogen may have been meta- 

 bolized at a more rapid rate in starved reproducing than in stared dia- 

 pausing weevils. But trehalose levels were maintained in weevils starved 

 12-20 hours because the trehalose content of reproducing weevils was 

 equal to or slightly higher than that of diapausing weevils. On a dry- 

 . weight basis, glycogen levels in weevils fed bolls continually were greater 

 in reproducing than in diapausing individuals. Because levels of glycogen 

 and trehalose were no greater in diapausing than in reproducing weevils, the 

 increased longevity of overwintering diapausing weevils cannot be caused by 

 accumulations of glycogen or trehalose. 



703. Newsom, L. D. 1967. Consequencies of insecticide use on nontarget 



••• 



organisms. Annu. Rev. Entomol. 12: 257-286. "" 



General contamination of ecosystems with measurable amounf^ of chlorinated 

 hydrocarbon insecticide residues has occurred during the last two decades. 

 Since "pest" and "beneficial" are terms that have no biological validity, 

 it is not surprising that both target and nontarget organisms have been 

 affected and have responded in similar ways. Phenomena such as suscepti- 

 bility, refactorines resistance, "resurgence" species displacement, specificity 

 of response and concentration of residues are known among both. It is un- 

 realistic to assume that "desirable" species will be eliminated while "pest" 

 species will become more difficult to control. 



