473 



and light-scaled males produce all dark-scaled F males and all light-scaled 

 F^ females. This mutant may prove useful in the sex-separation phase of 

 the prolonged boll weevil eradication program, especially if it allows mech- 

 anical separation of the sexes. The mutant may aiso be useful in isolating 

 induced mutations such as male sterility, temperature sensitivity, etc. 



933. . 1978. Boll weevils: increasing egg hatch and progeny development 

 by the addition of antibiotics to the artificial adult diet. J. Ga. 

 Entomol. Soc. 13: 173-177. 



When the antibiotics penicillin and streptomycin were added to an artificial 

 adult diet for the boll weevil, Anthonomus ' grand is Boheman, egg hatch and pro- 

 geny development increased significantly. These increases apparently resulted 

 from the elimination of bacterial slime from the adult diet. Egg production 

 was not affected. 



934. , and Earle, N. \L 1974. Attraction of female boll weevils to diapausing 

 and reproducing males. J. Econ. Entomol. 67: 171-172. 



In field trapping tests, reproducing males of Anthonomus grandis Boheman were 

 twice as attractive as males in diapause, and the attractiveness of diapausing ~ 

 males did not differ from that of unbaited traps. Frass from reproducing males 

 was 4X more attractive than frass from diapausing males in olfactometer tests. 

 However, the Increased incidence of pheromone deficient diapausing wepvils in 

 field populations in the fall does not clearly explain the renewed efficiency 

 of pheromone traps during this period. 



935. , and Earle, N. W. 1975. Response of virgin vs. mated and sterile vs. 

 fertile female boll weevils to male-baited traps. Environ. Entomol. 



4: 566-568. 

 In field cage and isolated field tests the response of virj^in female boll 

 weevils, Anthonomus grandis Bohenan, to male-baited traps was from 2 to 9 



^. 



