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Fig. 4 | Parasites & Vectors

Fig. 4

From: Spatio-temporal impacts of aerial adulticide applications on populations of West Nile virus vector mosquitoes

Fig. 4

Mean changes in abundance following aerial spraying, as compared to no-spray baseline. Estimates are shown for changes in abundance of Cx. pipiens (a, b) and Cx. tarsalis (c) with respect to antecedent sequence and average spatial coverage of aerial treatments. a, b For Cx. pipiens, estimates are shown for sprays that used only pyrethrin or pyrethroid products (a) and for sprays that utilized an organophosphate product at least once (b). c For Cx. tarsalis, estimates are with any product class. Horizontal axes represent the average proportion of the 5-km buffer surrounding a trap covered by a spray event, and vertical axes represent the temporal sequence of aerial sprays during the 4 weeks preceding the trapping event. On the left vertical axis, the 4-digit sequence indicates presence (1) or absence (0) of sprays in the 1, 2, 3 and 4 weeks (going from right to left along sequence) prior to trapping. The sequences of spray events are ordered from the fewest number and temporally most distant spray events (bottom) to the largest number and temporally closest spray events (top). Estimates are truncated to the range observed with the available data (gray squares indicate points present in dataset). Areas enclosed in a black border represent the portion of the spatio-temporal surface with significant estimates (P < 0.05)

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