[Strategic control of Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae) on horses, Minas Gerais, Brazil – Part I].

The research aims to evaluate the effectiveness of a strategic program designed to control the Amblyomma cajennense tick infestation in horses. The strategy involved two series of seven-day interval acaricide treatments using a cypermethrin-based spray, resulting in a significant decrease in adult tick infestation.

Strategic Control Program

• The research specifically centers on the control and reduction of Amblyomma cajennense, a tick species, infesting horses in a field in Minas Gerais, Brazil.
• Strategic control was exerted through the administration of acaricide treatments divided into two series. Acaricides are substances that kill ticks and mites.
• The first series of treatments started in April 2004, and the second series started in July 2004 – the treatments were spaced at seven-day intervals.
• Each treatment involved the application of a spray containing 0.015% cypermethrin, a pyrethroid chemical known for its insecticidal properties.

Evaluation of Program Efficiency

• The results revealed a considerable decrease in adult tick infestation post-treatment.
• Between October 2004 and March 2005, there was a 44.85% reduction in the tick population, and in February and March 2005, the reduction was 59.74%.
• The authors concluded that the strategic control program was effective in managing and reducing tick infestation in horses.

Consideration of Practical Challenges

• Importantly, the study also pointed out certain administrative and operational procedures that could affect the practical application of this technology and should therefore be taken into account.
• This could include factors like the cost of the chemical sprays, the logistics of regular application across large herds of horses, and the viability of the seven-day treatment interval in various real-world contexts.