Synthetic pyrethroid resistance in Rhipicephalus (Boophilus) microplus ticks from north-western Himalayas, India
R Godara1, R Katoch2, Shafiya I Rafiqi2
1Division of Veterinary Parasitology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology, R.S. Pura,, Jammu, 181102, India. godara1972@gmail.com.
Tropical Animal Health and Production
|January 16, 2019
Summary
This study evaluated synthetic pyrethroid resistance in Rhipicephalus (Boophilus) microplus ticks from India
Area of Science:
- Veterinary Entomology
- Acarology
- Chemical Ecology
Background:
- Rhipicephalus (Boophilus) microplus is a significant cattle tick pest.
- Synthetic pyrethroids are widely used for tick control.
- Acaricide resistance in ticks poses a major threat to livestock health and productivity.
Purpose of the Study:
- To assess the resistance status of Rhipicephalus (Boophilus) microplus ticks to deltamethrin and cypermethrin.
- To investigate the geographical distribution of pyrethroid resistance in ticks from the north-western Himalayan region of India.
- To provide data for effective acaricidal resistance management strategies.
Main Methods:
- Adult Immersion Test (AIT) was employed for resistance evaluation.
- Ticks were collected from nine districts across three agro-climatic zones.
- Resistance Factors (RFs) were calculated for deltamethrin and cypermethrin.
Main Results:
- Resistance to deltamethrin was observed in multiple isolates, ranging from Level I to Level IV.
- Resistance to cypermethrin was detected in several isolates (Levels I and II).
- Higher tick resistance density was noted in the low-altitude sub-tropical zone, correlating with intensive animal husbandry and pyrethroid use.
Conclusions:
- The study confirms the presence of significant pyrethroid resistance in Rhipicephalus (Boophilus) microplus in the north-western Himalayan region.
- Findings highlight the need for monitoring and strategic implementation of acaricides.
- This data is crucial for developing sustainable tick control programs in remote areas.
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