Effcacy of Temephos on Aedes aegypti and Aedes albopictus larvae.

ABSTRACT

The study was aimed to compare efficacy of 1 ppm Temephos solution on Aedesaegypti and Aedes albopictus larvae. In the same area, ovitraps for collection both mosquitoes eggs were prepared, collected and carried to the laboratory. Eggs were immersed in water to induce larvae hatching. After hatching, laboratory generation of F1 stage 4 mosquitoes were used in this assay. Sixty paper cups were contain 100 ml of 1 ppm temephos solution each cup consisted of 10 larvae in 100 ml temephos solution 30 paper cups with 10 Ae. aegypti larvae/cup and other 30 paper cups with 10 Ae. albopictus larvae/cup. Check the time beginning of the test and the time to take the larvae died. The results reveal that the first larvae of Ae. aegypti and Ae. albopictus were died at 32 and 37 minute and last larvae died at 81 and 91 minute respectively. The death time averages of Ae. albopictus and Ae. aegypti larvae were 49.203 ± 7.863 and 54.95 ± 9.636, respectively. (significant with p\< 0.05). The death time that most of Ae. albopictus larvae, n=30, died within 46 minutes and most of Ae. aegypti larvae, n=65, died within 56 minutes. Keywords Aedes aegypti, Aedes albopictus, Temephos 2% w/w