The survival of exposed groups was lower in
comparison to the control groups exposed for the same time period (24 h: H=5.4634, p=0.0209; H=
5.6709, p=0.0209). The exposure time influenced
the survival of exposed snails, and for the longer
exposure period the survival rates were lower
(H= 4.5733, p=0.0433). The exposure time do not
influenced the survival of control groups (H=0.35,
p=0.5541). These results are presented on Figure 3.