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Research Title The effectiveness of Bacillus thuringiensis israelensis in decreasing Aedes aegypti container index in Rawasari Area, Jakarta Pusat.
Focus Others (-)
Investigator Rheza Maulana Syahputra
NIM 0806358155
Adviser Saleha Sungkar
Category Epidemiology
Research Date (Start Date) 14 Januari 2010
Exam Date 07 Agustus 2013
Keywords Aedes aegypti, Larvae, Bacillus thuringiensis israelensis
Abstract

The incidence of dengue haemorrhagic fever (DHF) increases every year even though enormous measures to control the vector, Ae. aegypti, have been taken. Consequently, a vector-controlling method that is efficient, easy to use and less side effect is needed. Previous study stated that Bacillus thuringiensis israelensis (Bti) could be used to control Ae. Aegypti, however, the study only conducted in laboratory and semi-field setting. Thus, this study aims to know the effectiveness of liquid formulation Bti in decreasing Ae. Aegypti container index in the field setting (Rawasari Village, Jakarta Pusat). Survey was conducted in February and March 2010 in Rawasari Village, Jakarta Pusat. The Ae. Aegypti larvae from water container in 120 houses were taken using single larval method and were identified. Bti in the liquid formulation was introduced to all containers with the dosage of 4 mL/m2. One month later, the researcher re-evaluates the presence of Ae. aegypti in the water containers. The data was processed by using SPSS version 20 and tested by using McNemar test. Before the application of Bti, 21 of 261 containers were positively identified with Ae. aegypti larvae. After the application of Bti, the number of larva-positive container decreased to 15 containers. However, the difference is not statistically significant (McNemar p=0,230). Bti in the liquid form is not effective to decrease container index of Ae. aegypti. Further study needs to investigate the usage of Bti in slow release formulation to control Ae. aegypti.