A comparison of Glossina morsitans centralis originating from Tanzania and Zambia, with respect to vectorial competence for pathogenic Trypanosoma species, genetic variation and inter-colony fertility.
Two laboratory strains of Glossina morsitans centralis originating from different fly-belts (one from Singida, in Tanzania, and the other from Mumbwa, in Zambia) were compared with respect to vectorial competence for pathogenic Trypanosoma species, genetic variation and inter-colony fertility. The vectorial competence of G.m.centralis of Tanzanian origin for Trypanosma vivax and T. congolense is similar to, whereas for T.brucei brucei it is lower than the colony of Zambian origin. Nevertheless, these two laboratory strains of G.m.centralis showed levels of susceptibility to the three pathogenic Trypanosoma species which were much greater than previously observed in laboratory colonies of other Glossina species. Electrophoresis of fifteen enzymes revealed that the two colonies differ significantly in allele frequencies at only three loci that are relatively close together on one of the autosomes. Hybridization experiments revealed that G.m.centralis from the two fly-belts are consubspecific.
International Laboratory for Research on Animal Diseases (ILRAD), Nairobi, Kenya.
S K
SK
Moloo
R H
RH
Gooding
D000818:Animals; D005260:Female; D005298:Fertility; D014644:Genetic Variation; D006041:Goats; D007303:Insect Vectors / Q000235:genetics / Q000469:parasitology*; D008297:Male; D013636:Tanzania; D014345:Trypanosoma; D014346:Trypanosoma brucei brucei; D014348:Trypanosoma congolense; D016689:Trypanosoma vivax; D014370:Tsetse Flies / Q000235:genetics / Q000469:parasitology*; D015024:Zambia