27 



(2 and 2a), which, in turn, were converted into the corresponding aldehydes by 

 oxidation with manganese dioxide. 



47. Bell, M. R. , and McGovern, W. L. 1975. Susceptibility of the ectoparasite, 

 Bracon mellitor , to infection by microsporidan pathogens in its host, 

 Anthonomus grand is . J. Invertebr. Pathol. 25: 133-134. 



Since boll weevil larvae are used as hosts for rearing B^. mellitor , a study 

 was made to determine possible effects of G^. gasti and an unidentified micro- 

 sporidan on the parasite. The results of the study showed that infection of a 

 host colony by G, gasti would have an adverse effect on B^. mellitor rearing; 

 infection with the unidentified microsporidan would apparently have little or 

 no effect. 



48. , and McLaughlin, R. E. 1970. Influence of the protozoan Mattesia 

 grand is McLaughlin on the toxicity to the boll weevil of four insecticides. 

 J. Econ. Entomol. 63: 266-269. 



Anthonomus grandis Boheman, infected with the protozoan Mattesia grandis 

 McLaughlin, were more susceptible to lower doses of malathion, azinphosmethyl, 

 DDT, or carbaryl as the numbers of protozoans multiplied in the weevils. Thus, 

 the toxicity of all 4 insecticides to the weevils increased as the disease 

 progressed, and by the 12th day postinfection, the LPi^q values had decreased 

 5- to 7-fold. Also, fat content of the infected weevils decreased as the 

 disease progressed, and little or none remained at 12 days postinfection. 



49. Benedict, J. H.; Bird, L. S.; and Liverman, C. 1979. Bacterial flora of 

 MAR cottons as a boll weevil resisting character. Proc. 1979 Beltwide 

 Cotton Prod. Res. Conf., pp. 228-230. 



Based on these experiments and others, we concluded the following: (1) Some 



cotton genotypes favor larger populations of certain normal flora micro-organisms 



