THE POTENCY OF WATER LEAVES EXTRACT OF BAY (Syzygium polyanthum) AND PAPAYA (Carica papaya) AS LARVACIDES TO FILARIA VECTOR Culex queinquefasciatus (Diptera: Culicidae)

Culex quenquefasciatus is a mosquito that acts as a vector of
filariasis disease. In Indonesia filariasis is still one of the
endemic diseases. This proves that the handling of vector Culex
quenquefasciatus is still not done optimally. One way that can be
done to control mosquito vectors one of them is to use
larvacide. Larvacide which is widely used today is still
synthetic. Although very efficient in causing mosquito mortality,
larvacide synthesis harms the environment and can cause
vectors resistance. Then another larvacide alternative is needed
that is effective and does not cause negative effects. Plants can
be a choice of larvacide from nature. The study aims to find out
the potential of the water extract of bay leaves and papaya leaves
in killing the larvae of the Cx. quenquefasciatus mosquito as well
as the value of LC50 after 24-hour observation. The type of
research used is experimental research. The concentration of the
water extract of bay leaves and papaya leaves used is 10%, 30%,
50%, 70%, and 90% with trhee times replication. LC50 is
calculated using the Finney formula (1971), the calculation is
carried out using application SPSS statistical version 26. Based
on the research conducted, the value of bay leaf water extract
LC50 = 62.89 g/ml and papaya leaf water extract LC50 = 45.10
g/ml. So based on the LC50 value, ita can be concluded that
papaya leaf water extract is more effective in causing mortality
Cx. quenquefasciatus compared with bay leaf water extract.