Resistance Status of Aedes aegypti Larvae to Temephos in Dengue Hemorrhagic Fever Endemic Areas

Abstract

Dengue fever every year always present throughout the district in the Republic of Indonesia, often even a tremendous incident. Vector control is also not getting optimal results. One way of vector control is done by using larvae-type temephos. The use of temephos at first indeed proved effective in lethal Aedes aegypti larvae. However, continuous use of temephos feared to cause resistance to Ae.aegypti larvae. This study aims to determine the resistance of Ae.aegypti larvae to temephos in Banyumas and Kebumen District, Central of Java Province. This research was an experimental study with postest only with control group design by conducting a survey to DHF endemic areas. Ae.aegypti egg sample was taken by installing ovitrap in Kelurahan Teluk, South Purwokerto Sub-district of Banyumas District and Jatinegara Village, Sempor Sub-District, Kebumen District. After that the rearing of egg (grown) to become larvae in the laboratory. After the larvae reach instar III, the larvae are then tested for resistance to temephos. The results showed that Ae.aegypti larvae in Teluk Village, South Purwokerto District, Banyumas Regency and Jatinegara Village, Sempor District, Kebumen Regency were still susceptible to temephos. The government and the public can still use temephos to control the DHF vectors by the terms and conditions applicable. It is recommended to the health department conduct periodic evaluation to know the effectiveness of insecticides used, especially in endemic areas