Uso inadequado de carrapaticidas e desenvolvimento de resistências em Rhipicephalus microplus

Cattle production is a highly relevant sector of Brazilian agribusiness, standing out for its significant contribution to meat and milk production and its direct impact on the national economy. However, the presence of ectoparasites, particularly the tick Rhipicephalus microplus, represents one of the main sanitary challenges in production systems, leading to considerable productive and economic losses. This study aimed to analyze, through a literature review, the relationship between the improper use of acaricides and the development of resistance in tick populations. The research was based on scientific articles and technical publications addressing tick biology, its importance in cattle production, commonly used acaricides, and factors associated with their inadequate use. The findings indicate that practices such as underdosing, incorrect application, and lack of technical guidance favor the survival of more tolerant individuals, gradually contributing to the selection of resistant populations. It was also observed that control based exclusively on chemical products tends to lose effectiveness over time, especially when not combined with integrated management strategies. It is concluded that resistance development is closely linked to farm management practices, highlighting the importance of rational acaricide use and integrated control approaches to improve productivity and sustainability.