ARS | Publication request: Comparative capture rate responses of mosquito vectors to light trap and human landing collection methods

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: November 3, 2008
Publication Date: N/A

Technical Abstract: Capture rate responses of female Aedes albopictus Skuse, Anopheles quadrimaculatus Say, Culex nigripalpus Theobald, Culex quinquefasciatus Say, and Ochlerotatus triseriatus (Wiedemann) to CDC-type light trap (LT) and human landing (HL) collection methods were observed and evaluated for congruency within and between diel periods using HL as the response comparison baseline. Average daily responses to LT and HL were significantly related only for An quadrimaculatus. Within the diel period, HL captured Ae. albopictus during daylight and near sunset, although 25% of Ae. albopictus females were collected at night (31% for LT). Fifty percent of An quadrimaculatus responded to LT at sunrise and during the day compared with 65% to HL at this time. For Cx. nigripalpus, daily LT responses peaked near sunrise and sunset but responses to HL indicated a single peak near sunset. Both collection methods indicated a unimodal daily activity pattern for Cx. quinquefasciatus with highest capture rates at sunset. For Oc. triseriatus, LT capture rates were was lowest in daylight and near sunset but, for HL, lowest at night through sunrise. Regression models of the LT:HL relationship indicated that, except for Ae. albopictus, mosquito landing rate on human subject could be approximated for specific times of day from capture rate responses to LT. LT collections between sunset and sunrise were most precise in this regard for An. quadrimaculatus and Cx. nigripalpus as were those between sunrise and sunset for Cx. quinquefasciatus and Oc. triseriatus.