These results are comparable to those obtained for other marine invertebrates,
such as the Eastern oyster (C. virginica Hegaret et al., 2004) and the Pacific oyster
(C. gigas ;Zhang et al., 2006).Tanner et al. (2006)
investigated the effect of hypoxia hypercapnia and pH on PO activity in the Atlantic blue crab,
Callinectes sapidus.
Phenoloxidase activity declined significantly with decreases in pH and oxygen