| Summary: | Background:
Dengue is the most common mosquito-borne viral
disease. The main vector for Dengeu virus is the Aedes
aegypti mosquito. Due to no vaccine for dengue till now,
vector control is the main prevention for the spread of
Dengue. Some parts of Annona muricata,a plant from the
Annonaceae plant family have been reported to posses
larvacidal activity against variety of larva. This
research is specifically to find the larvacidal activity
of the chloroform extract from Annona muricata flowers
againt Aedes aegyti larva.
Aims of study:
The aims of the research is to develop larvacide
against Aedes aegypti from Annona muricata flowers, to
find the LC50 for the chloroform extract and to test
whether increasing the dosage concentration will
increase the larvae mortality.
Methods:
Third and fourth instar larvae of Ae. aegypti were
introduced to varying concentration of chloroform
extract from Sirsak (A. muricata) flowers for 24 hours
under standardized condition.
Results:
The LC50 and LC90 value for the cloroform extract of A.
muricata flowers after 24 hours of exposure are 1244,04
ppm and 3388,44 ppm respectively.
Conclusion:
Chloroform extract of A. muricata flowers have
larvicidal activity against Ae. aegypti larvae but it is
not effective. Mortality of the larvae increase with the
increase in the chloroform extracts concentration.
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