Star fruit extract (Averrhoa carambola L) is potential as a natural larvicides because it
contains chemical compounds of flavonoids, alkaloids, saponins. This study aims to
determine the larvacidal activity of star fruitextract to Aedes aegypti larvae and LC50 value
after 24 hours exposure. This study used concentration with 1.5%, 2%, 2.5%, 3%, 3.5%
and 1 negative control using tap water and 1 positive control using 0.01% temefos. This
study was post test only with control group design, total samples is 525 larvae from third
stage instar larvae of Aedes aegypti. The mortality larvae will be calculated after 24 hours.
The results of the study showed the percent mortality at concentrations of 1.5%, 2%,
2.5%, 3%, 3.5% Aedes aegypti larvae were respectively 0; 10.68; 21,36,30,68; 54,68;
61,36. The result of Annova test obtained P <0,05 meaning that there is significant
difference between death rate of Aedes aegypti larvae with various concentration of star
fruit extract (Averrhoa carambola L ) given. The LC50 value of the probit test for Aedes
aegypti larvae is 3.035%. It can be concluded that the star fruit extract (Averrhoa
carambola L) can kill Aedes aegypti larvae.
Keyword :Star Fruit Extract (Averrhoa carambola L) , Aedes aegypti larvae, Larvicidal
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