Evaluation of the Efficacy of Acaricides Used to Control the Cattle Tick, Rhipicephalus microplus, in Dairy Herds Raised in the Brazilian Southwestern Amazon

Table 2

Analysis of variance of the effects of the location (L) and of the acaricides (A) on the susceptibility to acaricides in Rhipicephalus microplus populations collected in the state of Rondônia, Brazil.

Source of variation	D.F.	S.S. (Type III)	M.S.	F
Acaricide (A)	10	71.2554	7.1257	834.55**
Location (L)	4	0.0252	0.0063	0.74^ns
A × L	40	0.3341	0.0084	0.98^ns
Coefficient of variation	7.05

D.F.: Degrees of freedom; S.S. (Type III): Type III sum of squares; M.S.: Mean square error; F: F-test estimates; **: Significant at 1% probability;   ^ns: Not significant.