“…The observed reduction in Cd absorption by P. pugio (i.e., AE-Cd% < TAM-Cd%) exposed to a higher concentration of dietary Cd (i.e., A. franciscana exposed to 1 lM Cd) may be related to digestive physiology (e.g., saturation of metal-binding sites) and/or toxicity (e.g., inhibition of digestive enzymes) and requires further study (Chen & Mayer, 1998;Chen, Mayer, Weston, Bock, & Jumars, 2002;Reinfelder, Fisher, Luoma, Nichols, & Wang, 1998).…”