Survival and Population Density of Aedes Triseriatus (Diptera: Culicidae) in a Woodlot in Central Ohio, USA

Laboratory-reared Aedes triseriatus females were marked and released into a 13.6-ha woodlot in central Ohio, USA. Two cohorts were released in 1979 at 1 central site, and 3 were released in 1980 at 14 sites uniformly spaced throughout the woodlot. Captures of marked and wild females from daily biting collections were used to estimate daily survival, distribution within the woodlot, dispersal to a nearby satellite woodlot, and population density of wild females. Recapture rates averaged 41% in 1979 and 12% in 1980. Survival rates of marked females from all cohorts corresponded closely, ranging from 0.93 to 0.97 per day. Neither marked nor wild females were uniformly abundant at collection sites, but rather they favored certain sites. Dispersal to the satellite woodlot was low. Estimates of the wild female population ranged from 23 to 205/ha. Results suggest that Ae. triseriatus has a high survival rate, a low population density, and a low dispersal rate when compared with most other mosquito species.