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Insecticides and acaricides: resistance and environmental impact
1Agricultural Research Service, United States Department of Agriculture, Kerrville, Texas 78028.
Revue Scientifique Et Technique (International Office of Epizootics)
|December 1, 1994
Summary
Livestock ectoparasite control faces challenges due to widespread insecticide and acaricide resistance. New pest management strategies are needed to address resistance and environmental concerns.
Area of Science:
- Veterinary Entomology
- Agricultural Science
- Pest Management
Background:
- Insecticides and acaricides are primary tools for livestock ectoparasite control.
- Intensive use has led to significant resistance in key ectoparasite populations.
Purpose of the Study:
- To review the current status of ectoparasite resistance in livestock.
- To discuss the implications of resistance for pest management.
- To highlight environmental concerns associated with pesticide use.
Main Methods:
- Literature review of insecticide and acaricide resistance in livestock ectoparasites.
- Analysis of resistance patterns in key species like Haematobia irritans and Boophilus ticks.
- Discussion of emerging pest management strategies and environmental impacts.
Main Results:
- Widespread resistance to organochlorines, organophosphates, and pyrethroids in flies (Haematobia irritans irritans, H. irritans exigua, Lucilia cuprina).
- Significant acaricide resistance in one-host Boophilus ticks to organophosphates, carbamates, pyrethroids, and amidines.
- Less widespread resistance observed in multi-host ticks.
Conclusions:
- Existing chemical control methods are becoming less effective due to resistance.
- New chemicals offer alternatives but raise concerns about further resistance and residues.
- Integrated pest management strategies are crucial for sustainable ectoparasite control in livestock, considering environmental impacts.