Figure 4

Mean EPG amplitudes (± SE) from female An. stephensi maxillary palps. EPGs were in response to 1-octen-3-ol and carbon dioxide from both behaviourally responsive and non-responsive mosquitoes that had or had not been exposed to B. bassiana spores. UnExp = unexposed to fungus, Exp = exposed to fungus. R = behavioural responders in feeding stimulus assay, NR = behavioural non-responders in feeding stimulus assay. Data are grouped by days according to the earlier and later time-periods in which strong behavioural differences in responsiveness occurred (See Figure 1): A) 1-octen-3-ol response, in which recordings were made from 1 to 3 days after fungus exposure; B) 1-octen-3-ol response, in which recordings were made from 4 to 7 days after fungus exposure; C) carbon dioxide response, in which recordings were made from 1 to 3 days after fungus exposure; D) carbon dioxide response, in which recordings were made from 4 to 7 days after fungus exposure; E) 1-octen-3-ol plus carbon dioxide response, in which recordings were made from 1 to 3 days after fungus exposure; F) 1-octen-3-ol plus carbon dioxide response, in which recordings were made from 4 to 7 days after fungus exposure. Within each grouping, treatments having no letters in common are significantly different (Tukey-Kramer adjustment, α = 0.05).