Oviposition Habitat Selection of Dengue Vectors, and in Response to Fish Predator.

To understand the effects of fish predator's kairomones on mosquitoes' oviposition, we established an experiment using gravid females. Kairomones concentrations were established using One individual fish was placed inside containers with varying water levels (1 L, 5 L, and 10 L of water). The fish were kept in the containers for 24 hours and were removed immediately at the start of each trial in order to have the kairomones remnants. Twenty gravid adult females of and were allowed to lay eggs on oviposition site with various treatments: (1) control without any kairomones; (2) kairomone remnant in 1 L of water; (3) kairomone remnant in 5 L of water; and (4) kairomone remnant in 10 L of water. There are significant differences between the numbers of eggs laid by both species for each different treatment (F = 9.131, df = 16, <0.001). However, fewer eggs were laid by compared to in the presence of kairomone remnants. This suggested that are significantly affected by the kairomones itself and have ability to detect the residual kairomone presence from