New trap for surveillance of the mosquito Aedes aegypti (Diptera: Culicidae)

The design of devices for monitoring of the dengue vector Aedes aegypti (L.) provides tools for entomological surveillance. Experiments were conducted to design a trap according to shape, color, capacity to capture and retain inside the A. aegypti gravid females. The shape were determinate by evaluating different prototypes in shapes of prisms with circular, square and triangular bases with dimensions of 13x13x20cm, each having a hole of 9 cm² allowing entry of mosquitoes. In each treatment was introduced an glass with 30 mL of mineral water and inside was covered with filter paper to estimate the oviposition of A. aegypti. The experiment of preference for color was based in the experiment to shape. The body of each trap to test was covered with colors green (523nm), red (621nm), black and gray, all of them with black entrances. Subsequently was verified the capture capacity of trap prototypes with new entrances in shape of truncated inverted pyramids of dimensions larger and minor bases of 6.5-4cm, 5-2.5cm and 4.5-1.5cm respectively. Finally were created retention systems of the mosquitoes according to perception of light and semiochemicals received inside the trap. All experiments had a control treatment and was applied ANOVA analysis with the program “Statistic v11”, only dates with P < 0.05 were considered significant. The results indicated that the shape does not influence the attraction (P = 0.32227). The red color was more attractive (P=01.1370) and the dimensions of the entries were not significant for capturing mosquitoes (P = 0.1370). The final prototype of the trap has a truncated pyramid shape, is red, has a black  oblique entry, an internal retention system, dimensions of 5-25cm and reached 90.5% ± 5 of capture in laboratory conditions.