Crab feeding rates and preference on native and non-native oysters.

<p>Number (mean ± SE) of oysters consumed by crabs over 24 hours in the oyster preference experiment. Gray bars are <i>Crassostrea gigas</i>, Pacific oysters, and white bars are <i>Ostrea lurida</i>, Olympia oysters. Crabs were randomly assigned to one of three treatments (n = 12): (1) 25 <i>C. gigas</i> only, (2) 25 <i>O. lurida</i> only, or (3) the treatment labeled “Choice”, 25 <i>C. gigas</i> and 25 <i>O. lurida</i>.