Studies on shell regeneration-I. Matrix and mineral composition of the normal and regenerated shell of Pomacea paludosa

V. R. Meenakshi, P. L. Blackwelder, P. E. Hare, Karl M. Wilbur, Norimitsu Watabe

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

1. 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. 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. 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.

Original languageEnglish (US)
Pages (from-to)347-351
Number of pages5
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume50
Issue number2
DOIs
StatePublished - Feb 1 1975
Externally publishedYes

Keywords

  • amino acids
  • aragonite
  • calcite
  • gastropod shell
  • Pomacea paludosa
  • shell mineralogy
  • shell regeneration

ASJC Scopus subject areas

  • Physiology

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