Larvicide Effects of Serratia marcescens strain MBC1 Extract on Instar III Larvae of Aedes aegyti

Bakteri merupakan kandidat yang berpotensi sebagai larvasida Aedes aegypti. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak Serratia marcecsens strain MBC1 terhadap kematian larva instar III penelitian eksperimental dengan dua macam bentuk pengujian, yaitu uji menentukan mortalitas dan lanjut melihat perkembangan setelah perlakuan larvasida. Larva diberi konsentrasi 125, 250, 500, 1.000 ppm. Uji diamati selama 24-72 jam. 500 ppm serta sampai semua mati. Kontrol positif menggunakan Abate® 1% kontrol negatif air sumur. Hasil analisis probit didapatkan bahwa nilai LC50 LC90 S. marcescens adalah 66.426,02 749.001,41ppm. mati pada 18 hari MBC1. dari menunjukkan mempengaruhi lamanya siklus hidup sebelum mencapai stadium dewasa. Bacteria have potencial as larvicide of The purpose this study is to determine the effect against larval third instars This research was an experimental with two kinds testing. test mortality and continuous observe development after treatment larvacide. mosquito were given bacterial extract in four concentrations (125, 1000 ppm), observed during 72 hours. at (500 1,000 ppm). observation completed when all larvae died. positive control used negative natural water. repeated 4 times. results show that are 66,426.02 749,001.41 All die days been givenan experiment shows influences length life cycle Ae. aegypti before reaching adult.