Acute and acclimated digestive responses of the cockle Cerastoderma edule (L.) to changes in the food quality and quantity. II. Enzymatic, cellular and tissular responses of the digestive gland

1. Ibarrola, I.
2. Etxeberria, M.
3. Iglesias, J.I.P.
4. Urrutia, M.B.
5. Angulo, E.