Figure 7

Spatial variation of mosquito feeding preferences between WNV positive and WNV negative sites. Differences in feeding preference indexes (P _i ) of Cx. pipiens mosquitoes of the notable non-avoided bird species in sites where West Nile virus (WNV) circulation in mosquitoes has been observed, WNV+, or not, WNV-, in Veneto region in the 2010-2012 time span. Asterisks indicate statistical differences between periods (°: p < 0.1; *: p < 0.05; **: p < 0.01).