Fig. 1
From: Dirofilaria immitis and Dirofilaria repens in mosquitoes from Corsica Island, France
An open-high-low-close chart showing the intensity and the time frame of the extrinsic incubation of Dirofilaria spp. within the vector in the studied area. Bars indicate the extinct (white) and active (grey) transmission period. Transmission intensity is represented by both generations (DG) and development units (DU) of Dirofilaria spp. on a weekly schedule. The fourth WDU of each month was considered equivalent to the corresponding MDU