

344 



ninhydrln-positive compounds were found, and of these, twenty-six were Identi- 

 fied and, in cost cases, quantitated. 3. Differences were found in both the 

 titer of the total amino acids on a daily basis and in the amounts of individual 

 amino acids, particularly tyrosine. A. Total nitrogen levels varied with both 

 sex and age, but amino nitrogen levels remained constant. 



674. Moody, D. S.; Bottrell, D. G.; White, J. R.;' and Newton, 0. H. 1974. 

 A programmable trapper for studying daily response patterns of boll 

 weevils to pheromone-baited traps. Tex. Agric. Exp. Stn. Misc. Publ. 

 1164, 4 pp. 



Research investigations require unique equipment that frequently cannot be pur- 

 chased. To investigate many biological phenomena, specific devices must be con- 

 ceived, designed and tested to determine insect responses and behavior. Tliis 

 boll weevil trap was constructed to determine the daily response patterns of 

 boll weevils, Anthonomus grandis Boheman, to wing traps baited with male weevils 

 or grandlure. Twelve yellow wing traps constructed of lightweight sheet metal 

 coated with StikeirfS) are housed in the trapper within Individual compartments 

 on a time-controlled turntable. A timer controls the rotation of the turntable 

 and the interval that each trap remains fiT position to catch weevils that respond 

 ' to the males of grandlure. The trapper may be programed to alU)w daily catches 

 of weevils at hourly or bihourly intervals. 



675. ; Munoz, S. C; Pettit, R. E.; and Bottrell, D. G. 1975. Relative 

 toxicity of the fungus Aspergillus flavus to the male and female boll 

 weevil. Tex. Agric. Exp. Stn. Prog Rep. PR-3307, 2 pp. 



Studies are underway to determine the effectiveness of soil fungi in suppress- 

 ing boll weevils. Practical boll weevil suppression strategies can perhaps 

 be developed around the principle of sex specificity of pathogenic fungi. 

 The fungus, Aspergillus fln\njs , exhibited sex specific toxicity to laboratory- 



