190 



rays delivered in 25 equal doses over 100 h. In test 1, from 600 individual 

 pairs of T (treated) fJ X N (normal) 9, only 114 eggs hatched from a sample of 

 950 eggs, ar.v] 47 adults emerged from a sample of 1042 eggs. Also, from 600 

 pairs of T 9 X N c^, h eggs hatched of a sample of 6 eggs and 12 adults emerged 

 from a sample of 20 e^gs. In test 2, from 700 individual pairs of T <^ X N 9, 

 54 eggs hatched fron a sample of 1510, and 10 adults emerged from a sample of 

 1703 eggs. Also, in T 9 X N cJ matings, 1 egg hatched of a sample of 3, and 

 no adults emerged from a sample of 4. Transportation and handling in the 2nd 

 test reduced adult em<:rgence in avg of 49%. Thus the 2 replicates in test 2 

 resulted in 3.4 X 10^ and 4.3 X 10^ irradiated weevils emerging/day for 7 

 days. Bacterial contamination of weevils was low. 



369. ; Wright, J. E.; DeMilo, A. B. ; and Borkovec, A. B. 1979. Antifertility 

 effects of compounds screened against the holl weevil, Anthonomus grandis 

 Boheman. Miss. Aj;ric. For. Exp. Stn. Tech. Bull. 96, 7 pp. 



Penfluron was the moBt effective of 17 sterilants tested by feeding or 

 dipping boll weevils, A 3 day feeding of 0.1-0.4% or a 0.23-2% single 

 dip totally sterilized both sexes for 2 weeks posttreatment . 



370. ; Wright, J. E.; and Mattix, E. 1979. Fractionated vs. acute 

 irradiation: the effects of treating adult boll weevils (Coleoptera: _ 



'""" Curculionidae) at different ages. Entomol. Exp. Appl. 26 :«- 61-66. 

 When 6-7-days old ma<J8-reared ebony boll weevils, Anthonomus grandis Boheman, 

 were given 25 doses of y-irradiation totaling 6625 rads, mortality was 14%- 

 15% less 1 week later than when young weevils (1-2 day-old) were similarly 

 treated. However, giving older weevils an acute dose of 6625 rads did not 

 reduce mortality. Sevcn-day-old weevils receiving the acute treatment mated 

 10% more than '-'eevlls that were 3 days old at the time of treatment. Seven- 

 day-old male weevils <?y.posed to the fractionated treatment transferred sperm 



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