Effect of bednet coverage on vectors behavior and on malarial key parameters. a) Proportional reduction in mosquito life span, b) Proportional increase in duration of the feeding cycle, c) Proportional reduction in proportion of bites on humans (Q), and d) Proportional reduction in the logarithm of vectorial capacity as a function of ITN coverage,φ, for different species and different geographical locations. Anthropophilic species: Anopheles gambiae s.l. (N) in Nigeria (solid black line) and Anopheles gambiae (T) in Tanzania (dashed black line). Zoophilic species: Anopheles arabiensis in Nigeria (solid blue line) and Anopheles punctulatus in Papua New Guinea (dashed blue line).