Title

Studies on Shell Regeneration—I. Matrix and Mineral Composition of the Normal and Regenerated Shell of Pomacea paludosa

Document Type

Article

Publication Date

2-1-1975

Publication Title

Comparative Biochemistry and Physiology - A: Comparative Physiology

Keywords

Pomacea paludosa, Gastropod shell, Shell regeneration, Shell mineralogy, Calcite, Aragonite, Amino acids

ISSN

0300-9629

Volume

50

Issue/No.

2

First Page

347

Last Page

351

Abstract

1. The normal shell of Pomacea paludosa was all aragonite whereas regenerated shell was found to be calcite and aragonite. The calcite content was high (55–60%) in earlier stages of regeneration but was present only in traces after 15 days.

2. In normal shell, the periostracum had a higher glycine and lower acidic amino acid content as compared with the matrix of the calcified layer.

3. The regenerated shell had no periostracum-type protein, a very low glycine and a high acidic amino acid content. The ratio of acidic to basic amino acid residues decreased progressively with the increase of time of regeneration.

Comments

©1975 Published by Elsevier Inc.

DOI

10.1016/0300-9629(75)90024-9

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Peer Reviewed

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