Test the activity of larvae ethanol extract brown algae Turbine Sp against mortality of Aedes Aegypti mosquito larvae

Dengue Dengue Fever is an infectious disease caused by the dengue virus and transmitted through the bite of the Aedes aegypti mosquito. The increasing use of synthetic insecticides in recent decades has resulted in losses. Turbine sp. including blonde algae whose body resembles a shrub that appears to have roots, stems, and leaves. Turbine sp. contains flavonoid compounds, alkaloids, steroids, and tannins. This research aims to find out the activity of larvae of ethanol extract brown algae Turbine sp against the mortality of larvae of the Aedes aegypti mosquito. The research used a Complete Random Ized Design with five treatments and three replays. Three hundred larvae of instar III mosquitoes are inserted into each container containing Turbine sp brown algae ethanol extract with a set concentration. Each container is filled with 20 larvae. Observation of larvacide activity is carried out every 2 hours for 24 hours. The results showed Turbine sp brown algae ethanol extract could potentially be a biolarvacide in killing the larvae of the Aedes aegypti mosquito. The effective concentration of Turbine sp brown algae ethanol extract in killing the larvae of the Aedes aegypti mosquito is 200 ppm. The value of LC50 of Turbine sp brown algae ethanol extract in killing Aedes aegypti mosquito larvae is 58.74 ppm and is LC90 at 118.97 ppm.