Figure 2. Acetylcholinesterase (AChE) activity in the brain and muscle of silver catfish (Rhamdia quelen) juveniles anesthetized with thymol and carvacrol (50 and 100 mg/L) and S-(+)-linalool (153 mg/L). Data are reported as means±SD (n=6). ASCh: acetylthiocholine. *P<0.05, compared to the control (water) group in the same tissue (one-way ANOVA and Tukey's test or Kruskal-Wallis ANOVA by ranks).
