Larvicidal Effects of Metabolites Extracted from and Species against the Forth Larval Stage of (Diptera: Culicidae).

BACKGROUND

Larvicidal agents can be produced using microbial resources, which are environmentally friendly, biodegradable, and economical. The study's goal was to evaluate the larvicidal activity of metabolites isolated from (, and ) and () bacterial species against .

METHODS

Four metabolites isolated from and strains were exanimated for larvicidal activity. The experiments were performed for 24, 48, and 72 hours. 300, 350, 400, 450, 500, 550, and 600 μl of metabolites were added to 100 cc of dechlorinated water. Fourth-stage larvae were placed in dechlorinated water as a control. LC and LC were calculated using toxicity data and analyzed.

RESULTS

All metabolites had a statistically significant influence on mosquito larvae (P< 0.05). At 24, 48, and 72 hours, the LC for N2 () was 417, 386, and 370 ppm, respectively, and the LC was 650, 595, and 561 ppm. Moreover, LC for N4 () was 389, 376, and 347 and LC were 591, 565, and 533 and LC for N5 () was 390, 357, and 341 ppm and LC were 589, 532 ppm. In addition, LC for S921 () was 484, 416, and 382 ppm, and LC was 701, 612, and 574 ppm.

CONCLUSION

The four bacterial metabolites tested in our study were found to have a notable effect on the mortality rate of larvae, indicating their potential as natural larvicides. This is an effective technique for controlling that has no detrimental environmental impact.