Contamination after Induction.

<p>Mean consumption (±SE) of Grazed and Non-grazed <i>Silvetia compressa</i> by <i>Tegula funebralis</i> in choice bioassays under Ambient and Elevated copper exposures. Induction occurred in the absence of elevated copper levels. Grazed seaweeds are denoted by black bars and Non-grazed seaweeds by white. Asterisks (*) above horizontal bars designate statistical difference of repeated measures test (p<0.05). Asterisks (*) found above paired Ambient bars designate statistical difference between Grazed and Non-grazed tissues (p<0.05).