Figure 2.
Mosquitoes are attracted to heated black objects. (A) Variations to the basic trap (see “Materials and Methods” section for details). (B) Capture rates of 12 different traps as indicated in (A). (C) Higher temperatures caught more mosquitoes, and no heating resulted in a zero capture rate. The Trap (1) and Trap (3) were used. A representative sticky plate of the basic trap [Trap (1)] at 50°C is shown. Error bars show standard deviations (n = 20 for the basic trap; n = 5 for the others). Significant differences are indicated by different lowercase letters. (D) The Trap (5) presenting a black polyethylene bag with a white square at the center. Its infrared thermal image is displayed on the right pane. (E) The Trap (6) presenting a white paper with a black square at the center. Its infrared thermal image is displayed on the right pane.