Locomotor output of 21
dpf yellow perch during the VMR assay. (A)
During the last light period of the VMR assay, larvae exposed to 30
nM MeHg swam significantly more often than those exposed to 100 nM
MeHg (n = 36 larvae, ***P < 0.001).
(B) Throughout the duration of the entire 50 min assay, the locomotor
activity of larvae exposed to 30 nM MeHg was higher than that of control
(n = 36 larvae, P < 0.001), and
larvae exposed to 100 nM MeHg swam significantly less often than control
(n = 36 larvae, P < 0.001). There
was no difference between the 300 nM MeHg-exposed and control groups
(n = 36 larvae, P = 0.959). Values
are expressed as mean ± SE.