Evaluating some Safe Compounds’ Fatal Concentrations Against Culex pipiens molestus Forskal Mosquito Larvae in their Third Instar

Abstract

Abstract The toxicity of various compounds was investigated in this study using Culex p. larvae in their third instar. A mosquito’s third instar larvae were fatally affected by a concentration of 40 ppm of thymol on the fifth day of the experiment, with a 100% rate of fatalities However, the second day of treatment, 100% of the larvae died from Ethyl salicylate (80 ppm). The dose of Sulphamic acid (500 ppm) administered on the sixth day of treatment killed almost all of the treated larvae. The larvae died completely on the fifth day of the study due to the 800 ppm concentration of Dihydroxy toluene (DHT). A concentration of 1000 parts per million (Sulfanilamide) resulted in a full death of the larvae on the seventh day of the study. The inhibition of egg-laying action of compounds solutions. the concentrations used to kill third-instar mosquito larvae had the effect of completely preventing egg-laying at all concentrations. To obtain the concentrations at which female mosquitoes could lay eggs, the concentrations utilized in the experiment to kill the third instar of mosquitoes were lowered.