Feeding performance of tsetse flies.

Feeding efficiency (feeding time and blood meal size) of uninfected (SG-) and T. brucei salivary gland infected (SG+) tsetse flies. The reported feeding time is the total time that individual flies needed for the pre-feeding probing and the actual feeding. Blood meal sizes were determined by measuring the individual fly masses before and immediately after blood meal acquisition.(n) = number of samples.SG = salivary gland.