278 



The content of essential amino acids in the bud anthers of cotton, Gossypium 

 spp., the normal feeding site of Anthonomus grandis grandis (Boheman) was 

 similar to the content in the insect. The standard adult and larval boll weevil 

 diets possessed a lysine-arginine ratio of 0.52 because of the high level of 

 cottonseed arginine, but the ratio in anthers (assumed to be optimal) was 1.50. 

 Two diets that were formulated with a higher lysine-arginine ratio (0.90) and 

 a higher total amino acid content gave increased larval survival, growth, ovi- 

 position and hatch. 



526. ; Roberson, J.; and Wright, J. E. 1979. Evaluation of three larval and 

 adult boll weevil diets. J. Econ. Entomol. 72; 450-A52. 



Large-scale production procedures and conditions were used to evaluate 3 diets 

 for rearing Anthonomus grandis grandis Boheman. The Cast diet produced more 

 adults at a lower cost than the other 2; however, with.the Cast diet, adults 

 were smallest and percent egg hatch was lowest. The high gossypol diet pro- 

 duced the largest adults and highest percent egg hatch. Yields of adults were 

 lowest and cost per 1000 adults was highest with cottonseed flour diet. 



527. ; Wiygul, G.; Wright, J. E.; Dawson, J. R.; and Roberson, J. 1980. 

 Rapid method for mass-marking boll weevils. J. Econ. Entomol. 73: 385-336. 



The addition of 550 ppm Calco Oil Red N-1700S) dye to larval diet marked ca. 1 

 million adult Anthonomus grandis grandis Boheman that were reared on the diet 

 each week. No significant differences were found in yield of adults, weight, 

 number of eggs per female per day, or percent hatch. Also, there were no signi- 

 ficant differences in longevity, sterility, pheromone production, or mating 

 capability of marked and unmarked adults when fed 100 ppm dif lubenzuron for 6 

 days and then exposed to 10 krads of gamma irradiation from a ■'■■^^Cs source. 



/*i. 



