The pallial glands and rock boring in Lithophaga lithophaga (Lamellibranchia, Mytilidae)

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Abstract

The secretion of the pallial glands is generally held responsible for rock boring in Lithophaga lithophaga (L.). The glands do not secrete acid; the pH of the secretion was found to be about 6.5. Histochemical tests showed that the secretion is a neutral mucoprotein with calcium-binding ability. This finding indicates, that complexing of calcium by the secretion of the pallial glands is the mechanism of chemical boring into calcareous rock in L. lithophaga.

Ancillary