Larvicidal Trap Using Anonas (Annona reticulata) Leaves

Abstract

INTRODUCTION

Mosquitoes have been one of the highest causes of deaths per year. Despite of size, diseases mosquitoes carry can be fatal for the human body. The aim of the study is to lessen the mosquitoes in our community by making a larvicidal trap using Anonas (Anonna Reticulata) leaves extract.

METHODS

The A. Reticulata was osterized along with the 3000 mL of dechlorinated water in order to get the crude extract. The researchers used black cup and 6 x 1.5 inches of lawanit (piece of wood) in constructing the larvicidal trap. The crude extract was then dilutedin water to obtain different concentrations of: 100%, 50%, and 0% for each black cup. After the construction, the 10 mosquito larvae were put in each cup. The mosquito larvae mortality was observed in 3 days.

RESULTS

The researchers used T-test of independent samples to determine the significant difference of A. Reticulata and the negative control. Null hypothesis was rejected since the computed t-value of 7.00 is greater than the critical value of 4.30. The researchers also used One Way Analysis of Variance (ANOVA) and Scheffe's test to see the significant differences among the concentrations of the extract. The computed f-value was 19.5 against a critical value of 5.14. Meanwhile, in the Scheffe's test, it showed that there was a significant difference between 100% and0%; 50% and 0% but no significant difference between 100% and 50%.

DISCUSSIONS

In the results, it showed that the A. Reticulata extract was effective since it showed that there was a significant difference between the extract and the negative control. This depicts that the A. Reticulata extract is effective and can be used as a larvicidal trap. However, it is said that there is no significant difference between the 100% and 50% concentrations of A. Reticulata extract. This means that using 50% of concentration as larvicidal trap is the same as using 100% concentration of the extract. This also means that using 50% can be more efficient rather than using 100% because the usage of the extract will be less and can be used for the future larvicidal traps. All of these conclusions show that the A. Reticulata leaves extract is indeed effectiveas a larvicide.