The life cycle of Trypanosoma (Nannomonas) congolense in the tsetse fly

Parasites & Vectors

Table 1 Trypanosome infection rates in Glossina morsitans morsitans

	T. congolense (Tc)	T. b. brucei (Tbb)
No. of flies dissected	50	87
No. of infected midguts	42/50 (84%)	48/87 (55%)
No. of infected proboscides (Tc) or salivary glands (Tbb)	39/50 (78%)	12/87 (14%)
Transmission index (TI)	39/42 (93%)	12/48 (25%)
No. of midguts with positive spit samples	34/42 (81%)	40/48 (83%)
No. of proboscides (Tc) or salivary glands (Tbb) with positive spit samples	34/34 (100%)	12/40 (30%)

Male flies were individually caged and infected with Trypanosoma congolense 1/148 or T. b. brucei J10; the infected feeds were supplemented with N-acetyl-glucosamine. Flies were dissected 4–11 weeks after infection.

ISSN: 1756-3305