- 衛生動物 (ISSN:04247086)
- vol.71, no.4, pp.329-331, 2020-12-25 (Released:2020-12-17)
The role of zebra stripes is considered to be defensing from blood sucking by insects, such as tsetse flies and tabanid flies, those perform actively host-seeking flight. Aedes albopictus is opportunistically blood sucker, so, the reaction to zebra stripes may be different from such flies. Thus, we investigated the reaction of A. albopictus to the rugs of three color patterns, black, white, and zebra stripes. During the sunny days on August and September, 2019 with three different times in a day (morning, daytime, and evening), we counted the number of mosquitoes landed on the rugs on human decoy at a park in Tokyo. Significant difference (p<0.05) was found in the total number of mosquitoes landed on the three types of rugs, while no significant difference (p>0.05) was found in the numbers of mosquitoes landed on the rugs at each observation time. The number of A. albopictus which landed on the black-colored rug was two times more than that of a mosquito flying around the face of human decoy, while those on the rugs of white color and zebra stripes were a half and only 3% of those flying around the face of human decoy, respectively. The lured A. albopictus landed smoothly on the black rug, but the landings were not smooth on the zebra-striped rug. It was revealed that A. albopictus avoids zebra stripes as same as tsetse flies and tabanid flies.