Field Evaluation Of BG-Sentinel And BG-Mosquitito Traps For Filarial Vector Aedes Polynesiensis In French Polynesia.

The efficacy of the BG-Sentinel™ and the BG-Mosquitito™ traps was evaluated in Fren polynesia against human bait catch using the CDC Backpack aspirator. Efficiency was measured by comparing collection methods in a randomized Latinsquare design primarily for collection of host-seeking females of the filarial vector Ae. polynesiensis. Production of CO2 from yeast-sugar fermentation was measured (average 105 ml/min) and proved to be a suitable alternative source of CO2 where either dry ice or gas cylinder was unavailable. The various collection apparatus were tested on two typical islands of French Polynesia: the high, volcanic island of Moorea, and the low, coral island (atoll) of Tetiaroa. On Moorea, efficiency of the BG-Sentinel traps baited with either BG-lure or CO2 plus octenol were significantly more efficient than the BG-Mosquitito with BG-lure. Catch rates of BG- Sentinel or BG-Mosquitito baited with either BG-lure or CO2 plus octenol did not differ significantly to the CDC Backpack aspirator. On Tetiaroa, the operation of BG-Mosquitito was greatly affected from interference caused by rodents and consequently these traps were removed from comparison. Catch rate of the BG-Sentinel with either BG-lure or CO2 plus octenol did not differ significantly to the CDC Backpack aspirator. Both BG-Sentinel and BG-Mosquitito trap proved to be suitable efficient and convenient alternatives to the landing catch collection method for sampling Ae. polynesiensis. However, the BG-Mosquitito’s poor reliability in the field and the lower quality of mosquito specimens resulting from this trap demonstrate that the BG-Sentinel is a more adapted tool for Aedes mosquito field research.