The survival of snails hatched from eggs exposed
to B. pilosa extract was signifficantly lower (24 h:
H=11.8127; p=0.0027; 48 h: H=15.4655; p=0.0004).
The survival on groups exposed for 24 h was
signifficantly higher in comparison to the groups
exposed for 48 h (H=8.1699; p=0.0047) once that
for these groups all the snails were dead at the end
of 45 days of observation (Figure 2). The survival of
control groups did not vary on both exposure intervals
(H=8.3333; p=0.2612). It was not observed the reach
of sexual maturity in exposed and control groups for
both exposure intervals during the observation period.