467 



921. Van den Bosch, R. 1971. The melancholy addiction of ol King Cotton. Nat. 

 Hist. 80(10): 86-90, 



The history of cotton insect control has been marked by waste, misery, death, 

 and destruction. Yet we seem to have learned little from this pattern of di- 

 saster. The growers and entomologists of Central America, northeastern Mexico, 

 and the Rio Grande and Imperial valleys apparently did not learn much from the 

 experience of the Canete Valley. Now in Australia a newly developing cotton 

 industry seems to be repeating the same mistake. The Australians have spread 

 an insect Icidal blanki>.t and already the symptoms of the treadmill are beginning 

 to appear. 



922. Vanierzant, E. S. 1967. Wheat-germ diets for insects: rearing the boll 

 weevil and the salt-marsh caterpillar. Ann. Entomol. Soc. Am. 60: 1062- 

 1066. 



The use of wheat-germ diets for insects is^-reviewed. Modification of these 

 ^' lets a nd nuLi^Lional experiments conducted with them are discussed. Larvae 

 of the boll wee ■'1, Anthonomus grandis Boheman, developed to adults on wheat- 

 germ diet if cholesterol was included in the diet. Oviposition of boll weevil 

 adults in wheat-germ diet was similar to that in germinated cottonseed diet. 

 Moths of the salt-marsh caterpillar, Esti g mene acrea (Drury) , reared on wheat- 

 germ diet and on casein diet containing corn oil, had deformed wings. However, 

 when linolenic acid was added to the casein diet, the moths emerged with normal 

 wings, an indication that this insect has a dietary requirement for linolenic 

 acid. Linseed oil was used as a source of linolenic acid in the whoat-germ diet, 

 Because wheat-germ diet was shown to be deficient in sterol and linolenic acid 

 for certain species, quantitative requirements for these nutrients should be 

 Investigated when other species are reared on wheat-germ-based diets. 



