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Development of a New Mosquito Retention System for the BG-Malaria Trap To Reduce The Damage To Mosquitoes

Rodrigues, Moreno S., Silva, Ivoneide M., Leal, Leandro B., Dos Santos, Carlos A. C., Eiras, Álvaro E.
Journal of the American Mosquito Control Association 2014 v.30 no.3 pp. 184-190
Anopheles darlingi, carbon, collectors, insects, legs, traps, Brazil
The BG-Malaria trap was recently modified from the BioGents BG-Sentinel trap to collect Anopheles species, including Anopheles darlingi. However, the captured mosquitoes often lose their hind legs in the collector bag, making them difficult to identify. To develop a new collector system that is capable of maintaining the integrity of the mosquitoes collected in the BG-Malaria trap, we conducted a study in the municipalities of Belém (Pará State [PA]) and Porto Velho (Rondônia State [RO]), Brazil, using carbon dioxide–baited BG-Malaria traps with 4 different mosquito collector systems: standard, no bag, rigid short, and rigid long. Results indicated significant differences among the numbers of mosquitoes captured in the 4 different collectors (P < 0.05). Additionally, significantly fewer insects (P < 0.05) were damaged using the rigid short and rigid long collectors than by using the standard and no-bag collectors. We observed that the longer the insects remained in the collector, the higher the number of damaged insects; this effect was the greatest in the standard collector. The results of this study indicate that rigid long collectors were the best suited for use in the BG-Malaria trap.