Resistance of Dengue Mosquito to Agrochemicals in Pakistan
Author Information
Author(s): Khan Hafiz Azhar Ali, Akram Waseem, Shehzad Khurram, Shaalan Essam A
Primary Institution: Department of Entomology, University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan
Hypothesis
Have Aedes albopictus populations in Pakistan developed resistance to agrochemicals due to exposure in agricultural settings?
Conclusion
This study reports a moderate to high level of resistance to agrochemicals in Pakistani field populations of Aedes albopictus for the first time.
Supporting Evidence
- Resistance ratios for chlorpyrifos were found to be between 157-266 fold compared to a susceptible strain.
- Resistance remained stable across three years, indicating ongoing selection pressure.
- Moderate to high levels of resistance were observed for multiple insecticides including pyrethroids and organophosphates.
Takeaway
The dengue mosquito in Pakistan is becoming resistant to the chemicals used to control it, which could make it harder to manage dengue fever outbreaks.
Methodology
Field populations of Aedes albopictus were collected from three regions in Punjab, Pakistan, and tested for resistance to various agrochemicals through bioassays.
Limitations
The geographic extent of resistance is unknown and further studies are needed to confirm the mechanisms of resistance.
Participant Demographics
Natural populations of Aedes albopictus collected from upper Punjab, Pakistan.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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