The effect of Temephos 1% sand granule to behavioral oviposition of Aedes aegypti

Abstract

The aim of this study was to examine the efficiency of Temephos 1% sand granule to behavioral oviposition of Aedes aegypti. The laboratory Ae. aegypti strain and Chiangmai Ae. aegypti strain were tested in this study with a concentration of Temephos 4 ppm. The data were corrected by counting a number of Aedes aegypti eggs and comparison by Mann-Whitney U test. Before the testing confirmed the efficiency of the Temephos by using the same pack that was tested for behavioral oviposition to examine the mortality rate of the laboratory Ae. aegypti larva strain and Chiangmai Ae. aegypti larva strain at a concentration of Temephos 1 ml/l.

The result showed that the Temephos 1% was effective to eliminate the laboratory Ae. Aegypti larva strain and Chiangmai Ae. aegypti larva strain, mortality rate at 24 hours was 100%. And the result of behavioral oviposition showed that the laboratory Ae. aegypti strain and Chiangmai Ae. aegypti strain were laid eggs in pottery cup treatment more than pottery cup control. Moreover, comparison the difference of the number of eggs between pottery cup treatment and pottery cup control were not significantly different (p=0.591 and 0.800, respectively). And Oviposition Activity Index (OAI) analysis showed that Temephos 1% sand granule with a concentration at 4 ppm does not affect to behavioral oviposition of the Ae. aegypti.

From the results of this study can be concluded that the Temephos with concentration 4 ppm does not affect to behavioral oviposition of the Ae. aegypti. Thus using Temephos for eliminating Ae. aegypti lava does not effect to Ae. aegypti repellent, So Temephos is a good properly product to use for eliminating Ae. aegypti larva.