Figure 6
From: A reliable morphological method to assess the age of male Anopheles gambiae
The probability of a male An. gambiae having a clear area around his accessory gland as a function of age and mating history. Open and closed dots are the observed frequency of having a clear area in virgin and once-mated males respectively. The broken line gives the predicted probability of virgin males having a clear area through time, and the solid line gives the predicted probability for once-mated mates.