GENETICS OF 2 COLONIES OF GLOSSINA-PALLIDIPES ORIGINATING FROM ALLOPATRIC POPULATIONS IN KENYA

Two large colonies, originating from allopatric populations of Glossin a pallidipes Austen, in the Shimba Hills and Nguruman, Kenya, which di ffer biologically and with respect to vectorial competence, were compa red at fourteen enzyme loci using polyacrylamide gel electrophoresis. The colonies had similar levels of genetic diversity with approximatel y half of the loci being polymorphic, an average of 1.6-1.7 alleles pe r locus, and a mean heterozygosity per locus of approximately 18.4%. H owever, the colonies differed significantly in allele frequencies at t he loci for phosphoglucomutase, glucose-6-phosphate dehydrogenase. xan thine oxidase, octanol dehydrogenase and phosphoglucose isomerase. The resultS were compared with earlier studies on this species and no evi dence was found for selection of specific alleles during establishment or maintenance of colonies of G. pallidipes, nor were specific chromo somes, or marker genes, associated with the biological differences bet ween the two colonies.