Figure 5.

Effect of different types of unpaired olfactory stimuli on learning rate in Anopheles gambiae females. The mean proportion (± 95%CIs) of females probing and feeding on the preferred feeder associated with the positive reinforcement stimulus of non-salted blood is shown for two sets of experiments. In the first experiment (white circles) the olfactory cue of Blue Shropshire cheese smell was associated with one of the feeder and the other feeder was kept odourless or vice-versa; in the second (black circles), Citronella smell was used in a similar way (see methods for details).