| breeding structure of screwworm fly populations (diptera: calliphoridae) in colima, mexico. | starch gel electrophoresis was used to resolve gene frequencies among populations of screwworm, cochliomyia hominivorax (coquerel). the loci examined coded for alpha-glycerophosphate dehydrogenase, octanol dehydrogenase, and phosphoglucomutase. flies were sampled by traps widely distributed in colima province, southwestern mexico. gene frequencies at odh differed significantly among the 11 populations. alleles segregating at pgm and alpha-gpdh were homogeneous among populations. there were signi ... | 1993 | 8459427 |