Abstract

To determine the habitat distribution of potential vectors of EEEV in an endemic area, host-seeking mosquitoes were collected in bird-baited CDC traps from 12 habitats during the summer of 1980; traps were placed at 3 heights within each of 4 cover types. Four of the major species preferred a single habitat: open field/ground for Culiseta melanura, Cs. morsitans and Coquillettidia perturbans and swamp/ground for Aedes canadensis. All of the major species had a preferred cover type: open field for Cs. melanura, Cs. morsitans and Cq. perturbans, tree row for the Culex pipiens-restuans group and swamp for Ae. canadensis. Only Cs. melanura and Ae. canadensis had a preferred height (ground). Results support the hypothesis that the epidemic spread of EEEV is a function of the movement of infected Cs. melanura.

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