Experimental replicates consisted of one H. sanguineus and ten amphipods
per bowl, equivalent to ~310 amphipods and 31 crabs per m2.
A total of 40 replicates with sediment and 40 replicates without sediment
were conducted for each size class of crab. Only crabs with intact
chelae were used in experiments, and each crab was used only once.
Both crabs and amphipods were held without food for 24 h prior to
experiments.