Esbiothrin-impregnated ropes as mosquito repellent.

Area of Science:

• Entomology
• Environmental Science
• Public Health

Background:

• Esbiothrin is an improved isomeric composition within the allethrin series, derived from chrysanthemic acid and allethrolone.
• Mosquito-borne diseases pose a significant threat to human and animal health, necessitating effective control methods.

Purpose of the Study:

• To evaluate the efficacy of esbiothrin-impregnated jute ropes as a mosquito repellent in human dwellings and cattlesheds.
• To assess the impact of esbiothrin smoke on mosquito entry and biting rates.

Main Methods:

• Jute ropes were impregnated with esbiothrin at specific dosages.
• The smoke from smouldering ropes was tested in open-door and windowed human dwellings and cattlesheds.
• Mosquito entry and biting rates were monitored for various mosquito species, including Anopheles culicifacies and Culex quinquefasciatus.
• Fire hazards were mitigated using an iron mesh around the smouldering ropes.

Main Results:

• Esbiothrin-impregnated ropes (500 ppm) prevented the entry of over 95% of Anopheles and 88-96% of Culex mosquitoes.
• A significant reduction in mosquito biting rates was observed, with no Anopheles bites recorded for human baits near the ropes.
• The repellent effect was noted in both human dwellings and cattlesheds.

Conclusions:

• Esbiothrin-impregnated jute ropes demonstrate high efficacy as a mosquito repellent in open environments.
• This method offers a practical and effective approach to reducing mosquito populations and their biting rates, contributing to public health.
• The use of an iron mesh ensures safety by preventing fire hazards associated with smouldering ropes.