Fig. 3From: Testing for the induction of anti-herbivory defences in four Portuguese macroalgae by direct and water-borne cues of grazing amphipodsMean (+SE) amphipod-consumption on Fucus vesiculosus during 4-day long feeding assays (n = 7) at the end of the treatment and recovery phase (see “Materials and methods” for details) for a live algae and b agar-based food containing lipophilic Fucus-extracts. Treatments sharing the same letter are not significantly different. Black bars control, open bars directly amphipod attacked, white dotted bars waterborne cues from nearby-grazed conspecifics, black dotted bars waterborne cues from non-grazing amphipodsBack to article page