EFEKTIVITAS EKSTRAK KASAR ETANOL DAUN ZODIA (Evodia suaveolens (scheff)) TERHADAP LARVA NYAMUK Aedes aegypti (Diptera: Culicidae) DI NAGARI KOTO BARU SIMALANGGANG, KABUPATEN LIMA PULUH KOTA

Dengue hemorraghic fever (DHF) is caused virus which transmitted by the Aedes aegypti mosquito. This research aimed to reveal the potency of raw extract of zodia leaves as biolarvacide on larvae of Ae. aegypty and to know the vulnerability status of the larvae of Ae. Aegypti. to temephos 0.012 mg/L. Larvae samples were collected from Nagari Koto Baru Singgalang, Regency of Lima Puluh Kota. In this research, the larvae of Ae. aegypti were treated with extract of zodiac leaves rendered on 0,000%, 0,125%, 0,250%, 0,500% concentration in addition to temephos 0,012 mg/L. The result showed mortality percentage on each concentration of zodia leaves extract as follow; 0%, 8%, 54% and 95%, which determined the value of LC50 and LC90 on 24 hours as 0,26% and 0,42%. Different treatment affects the mortality rate of larvae as there was difference on toxicity level. Zodia leaves extract with 0,500% concentration is proven effective as biolarvacide on Ae. aegypti with LT50 value 8,4 hours and LT90 17 hours. In the other hand, larvae of Ae. aegypti have become resistant to temephos 0,012%, with mortality percentage 1%. Keywords: Biolarvacide, Dengue Haemoragic Fever, Lethal Concentration, Lethal Time, Resistan