Fig. 4From: The role of grass volatiles on oviposition site selection by Anopheles arabiensis and Anopheles coluzzii Oviposition preference hierarchy of Anopheles arabiensis (top) and Anopheles coluzzii (bottom) in a multi-choice arena, to water conditioned with volatile headspace extracts of the four grass species, Echinochloa pyramidalis, Echinochloa stagnina, Typha latifolia and Cyperus papyrus. Mean numbers of eggs with the same letters indicate no significant difference from one another (nominal logistic fit model, χ2 and P < 0.05 from the likelihood ratio test, significant differences were determined by odds ratio pairwise comparisons). Error bars represent the standard error of the meanBack to article page