Table 2.

Results of two-way ANOVA analysis about the direct and interactive effects of independent factors (treatment and exposure period) on physiological and biochemical parameters

Parameter	Treatment		Exposure time		Interaction
	%	p	%	p	%	p
Hg content	80.21	< 0.0001	14.53	< 0.0001	5.16	< 0.0001
H2O2 level	71.96	< 0.0001	2.28	ns	3.07	ns
MDA content	69.97	< 0.0001	5.27	0.017	5.48	ns
Proline content	91.29	< 0.0001	2.31	0.0021	1.75	0.049
SOD level	73.79	< 0.0001	15.17	< 0.0001	6.69	0.0016
CAT level	62.30	< 0.0001	12.24	0.013	0.25	ns

ns: statistically not significant; %: percent of the total variation