hibernation quarters. Brooms edge was found to harbor only a few weevils 50 feet 

 from an old cotton field and none at distances of 150 and 250 feet. Dead bermuda 

 grass on a railroad bank fill apparently was not sufficiently dense to afford good 

 protection as no weevils were found in this habitat at a distance of 50 feet from an 

 old cotton field. 



One interesting result of this study was the finding of live weevils in old 

 cotton bolls remaining on the stalks in the field. Although the number of weevils 

 found in the old bolls was low, in comparison with the counts in the surface woods 

 trash, it may be an important point in favor of stalk destruction. 



1958 - Fye, R. E., A. R. Hopkins, W. W. McMillian, and R. L. Walker. Survival and 



emergence of boll weevils from several areas under similar hibernating condi- 

 tions. J. Econ. Ent. 5 1(5):745-746. 



In November 1956, trash was collected from several areas in the Carolinas 

 and Virginia and brought to Florence, S.C., for examination. All the weevils 

 collected in each area were placed in an 8-inch cylindrical wire cage containing 

 woods trash and put back in hibernation at Florence. On May 1 the small cages 

 containing them were put inside 4-cubic-foot screen cages, the ends opened, and 

 the weevils allowed to emerge. Results suggest that 'weevils entering hibernation 

 in the northern area are conditioned to survive under more severe winter condi- 

 tions than occurred at Florence. Weevils from South Carolina emerged much 

 earlier than those from Virginia, the respective percentages on June 1 being 

 approximately 90% and 30%. Emergence from the other areas was intermediate 

 between these. 



1959 - Fye, R. E., W. W. McMillian, R. L. Walker, and A. R. Hopkins. The distance into 



woods along a cotton field at which the boll weevil hibernates. J. Econ. Ent. 

 52(2):310-312. 



A study of the distance that the boll weevil moves into woods adjoining cotton 

 fields revealed that 90% hibernate in the first 180 feet. The most weevils were 

 taken 30 to 45 feet into the woods. High populations were found in trash l/2 to 3 

 inches deep, and more were found in deciduous leaf trash than in pine straw. 

 More weevils were found in slightly moist trash than in exceedingly dry or wet 

 material. 



1959 - Walker, J. K., Jr., and J. R„ Brazzel. A method for collecting diapausing boll 

 weevils for hibernation studies. J. Econ. Ent. 52(2):346-347. 



Twelve 4'x 4'x 4 1 wooden frame hibernation cages covered with 16-mesh 

 screen wire used outside the laboratory at College Station, Tex. Fifty pounds of 

 Spanish moss was suspended from the top of each cage. Ten cages were used to 

 confine weevils which were collected from the field at 10 weekly periods from 

 September 8 to November 4 and caged immediately, about 500 per cage. These 

 weevils received no food after collection. Boll weevils in 2 cages were allowed 

 to feed after collection on November 4 for 2 and 4 weeks in the laboratory before 

 confinement. Only those weevils that had ceased feeding were transferred to the 

 two cages. Emergence from the hibernation cages was recorded during April, 

 May, and June of the following year. Sex ratios were determined. Of the weevils 

 caged immediately, maximum emergence was 4% from the cage containing 

 weevils collected on October 9. From the cages containing the weevils allowed 

 to feed for 2 and 4 weeks, respectively, after collection on November 4, 19.3% 

 and 13.8% emerged. The sex ratio of weevils emerging in April was 52.6% males 

 and 47.4% females; for May, 60% males and 40% females. No emergence took 

 place in June. 



DIAPAUSE 



1957 - Brazzel, J. R., L. D. Newsom, J. S. Roussel, and R. C. Gaines. The effect of 

 food on fat accumulation of the boll weevil. Assoc. South Agr. Workers Proc. 

 p. 54:145. 



Boll weevil infested squares and bolls were collected from the St. Joseph and 

 Baton Rouge, La. areas. Weevils obtained from the squares and bolls were 



148 



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