280 



with azinphosmethyl. As a result of these treatments, reproduction could not 

 be detected in 32 of the 33 fields at the end of the experiment. The infesta- 

 tions in the one field was not detected until the last week of the experiment 

 so that time did not permit total elimination of reproduction in it. 



531. ; Daum, R. J.; McLaughlin, R. E.; Tingle, F. C; McKibben, G. H. ; 

 Burt, E. C; McCoy, J. R.; Bell, M. R.; and Cleveland, T. C. 1968. A 

 red dye to evaluate bait formulations and to mass mark field populations 

 of boll weevils. J. Econ. Entomol. 61: 1A40-1444. 



Calco Oil Red N-1700 dye was used to evaluate bait formulations both in the 

 laboratory and in the field as well as to mass mark field populations of the 

 boll weevil, Anthonomus grandis Boheman, attracted to a cottonseed-oil bait. 

 The red dye permitted the evaluation of bait formulations without confounding 

 the efficacy of the bait with control agents. It was not necessary to handle 

 the insect; the marked insect was easily recognized when captured; the dye 

 persisted throughout the life of the individual, and the dye caused no dele- 

 terious biological effects. 



532. ; McCoy, J. R. ; and Haynes, J. W. 1976. Release of sterile male boll 

 weevils in the Pilot Boll Weevil Eradication Experiment in 1972-73. Iri^ 

 Boll Weevil Suppression, Management, and Elimination Technology. Proceed- 

 ings of a Conference, February 12-15, 1974, Memphis, Tennessee. U.S. 

 Agric. Res. Serv. [Rep.] ARS-S-71, pp. 95-102. 



With a high degree of effective male sterility during a weekly release program, 

 the accidental release of 1% females will have little if any effect on repro- 

 duction because of the high level of effective sterility in the released sterile 

 males. The absence of ebony adults developing from larval collections during 

 the period of weekly releases clearly indicates that the release of 1% female 

 weevils had no effect on reproduction so long as releases were made weekly. 



