Assessment of Antitick and Repellent Activity of Azadirachta indica Oil against Adults and Larvae Stages of Rhipicephalus microplus

Table 2

Mortality slope, , LC₅₀, LC₉₅ values with 95% CI of R. microplus against Azadirachta indica oil and technical-grade fipronil by adult immersion test (AIT) and larval packet test (LPT).

Acaricides	Bioassay	Slope ± SE		LC50 (95% CI)	LC95 (95% CI)
A. Indica oil	AIT	1.248 ± 0.2523; RI = −10.78 ± 2.619; % IO = 14.71 ± 0.940	0.89; 0.84; 0.98	2.70 (2.23–3.26)	55.75 (37.21–83.52)
Fipronil		3.479 ± 0.4454	0.97	1.03 (0.96–1.10)	3.10 (2.70–3.55)
A. Indica oil	LPT	2.049 ± 0.2863	0.95	1.27 (1.13–1.42)	8.04 (6.32–10.22)
Fipronil		2.719 ± 0.7459	0.87	1.12 (1.03–1.22)	4.51 (3.77–5.39)