Also,
lethality and CE activity were registered after exposure to the pesticide
and during 21 days of the recovery period. A concentration
of 20 g L−1 azinphos-methyl caused approximately 90% of inhibition
of ChEs after acute exposure (Bianco et al., 2013). Also, it
corresponds to a concentration found in freshwater (Loewy et al.,
2011) so, in the present work, recovery at an environmental concentration,
which produced high inhibition of ChEs, was evaluated.