Fig. 1From: Contrasting effects of the alkaloid ricinine on the capacity of Anopheles gambiae and Anopheles coluzzii to transmit Plasmodium falciparumEffect of ricinine on the susceptibility of Anopheles gambiae and An. coluzzii to four natural isolates of Plasmodium falciparum (A, B, C and D). a Infection rate (± 95% CI) on day 7 post-blood meal (dpbm), expressed as the number of females harbouring at least one oocyst in their midguts out of the total number of dissected females for each treatment (red bars: control mosquitoes fed with a 5% glucose solution; blue bars: test mosquitoes fed with a 5% glucose solution and either 0.04 or 0.08 g l−1 of ricinine) and for each of four parasite isolates (A–D). b Infection intensity at 7 dpbm, expressed as the number of developing oocysts in midguts of infected females, for each treatment and the four parasite isolates. A concentration of 0.04 g l−1 of ricinine and An. coluzzii were used for the first experimental infection using parasite isolate A (left panel in a and b), while concentrations of 0.08 g l−1 and An. gambiae were used for other infections (isolates B, C and D). “g µl−1” corresponds to the number of gametocytes per microlitre of bloodBack to article page