'"^'"'Tt^F^infflWf'nrf-iiinii m I iiif nil 11 ..-,-- - - ■ ^ , 



I 14 



I 



I 20. , and Mortell, T. R. 1972. A facile route to three of the four 



I ■ terpenoid components of the boll weevil sex attractant. Tetrahedron 



I ■•;■■..:••■•■■• 



I Lett. 8: 669-672. 



1 



J. H. Tumlinson, R. C. Gueldner, D. D. Hardee, A. C. Thompson, P. A. Hedin, 

 and J. P. Minyard reported Identification and synthesis of the four compounds 

 (1^, 2_, 3^, and 4^) comprising the boll weevil sex attractant. These compounds 

 are currently of considerable interest since they may provide a relatively 

 nontoxic method of surveying and controlling the boll weevil population. 

 This letter describes a facile route to the aldehyde components (1^ and 2) in 

 60% overall yield. Separation of this mixture, followed by reduction of 

 Z-aldehyde _1 with sodium borohydride, offers a route to the third component, 

 Z-alcohol 3^* • 



21. Bachaler, J. S., and Bradley, J. R., Jr. 1975. Effect of temperatures on 

 development and mortality of the boll weevil egg stage. Environ. Entomol. 

 4: 319-320. 



Anthonomus grandis Boheman egg development averaged 70.0, 56.7, 55.9, 73.9, 

 102.5, and 174.4 h at 36, 34, 30, 26, 22, and 18°C, respectively. Egg mortality 

 was negligible within this temperature range. These data provide a missing com- 

 ponent of boll weevil biology and are precise enough for computer simulation 

 purposes. 



22. ; Jones, J. W. ; Bradley, J. R., Jr.; and Bowen, H. D. 1975. The 

 effect of temperature on development and mortality of boll weevil 

 immature stages. Environ. Entomol. 4: 808-810. 



The developmental periods and mortality of the immature stages of field boll 

 weevils at 18, 22, 26, 30, and 34°C were determined. Cotton branches containing 

 ^ squares into which a boll weevil egg had recently been deposited were placed into 

 plastic Aquapics® in temperature controlled cabinets in which direct sunlight 



