title: Genetic variation at structural loci in the Glossina morsitans species group.
abstract: Gene diversity was investigated in four taxa of tsetse flies (Diptera: Glossinidae) including Glossina morsitans, G.m. centralis, G. Swynnertoni, and G. pallidipes. Histochemical tests were performed for 35-46 isozymes. Polymorphic loci were 20% in G. morsitans, 32% in G.m. centralis, 17.6% in G. swynnertoni, and 26% in G. pallidipes. Mean heterozygosities among all loci were 6.6% in G. morsitans morsitans, 6.0% in G.m. centralis, 7.1% in G. swynnertoni, and 6.8% pallidipes. Allozyme gene diversities were considerably less than those reported for many Diptera. The low gene diversities are probably related to small effective population sizes.
authors.affiliation: Department of Entomology, Iowa State University, Ames 50011-3222, USA.
authors.forename: E S
authors.initials: ES
authors.lastname: Krafsur
authors.forename: N
authors.initials: N
authors.lastname: Griffiths
mesh_terms: D000818:Animals; D004175:Diptera / Q000235:genetics; D004591:Electrophoresis, Polyacrylamide Gel; D004798:Enzymes / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D018429:Glossinidae / Q000235:genetics*; D006579:Heterozygote; D011110:Polymorphism, Genetic; D014198:Trehalase / Q000235:genetics; D014370:Tsetse Flies / Q000235:genetics
chemical_list: D004798:Enzymes; D014198:Trehalase