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Development and metamorphosis of the larvae of Ascidia malaca in different experimental conditions.
- Source :
-
Rivista di istochimica, normale e patologica [Riv Istochim Norm Patol] 1976; Vol. 20 (4), pp. 167-75. - Publication Year :
- 1976
-
Abstract
- In larvae of Ascidia malaca that have developed in sea-water without sulphate ions, the cells of the caphalo-ventral region are devoid of sulphated mucopolysaccharides, and the chordal and muscular cells of the tail turn out to be altered; after metamorphosis no adhesive ampullae appear. The addition of cysteine to water lacking sulphate ions leads to a normal synthesis of sulphated mucopolysaccharides in the cells of the cephalo-ventral region, and to a normal secretion of matrix by the chordal cells; but the larvae do not regain the ability to swim. The addition of N-dichloroacetyl-DL-phenylalanine to sea-water does not alter the synthesis of sulphated mucopolysaccharides in the cells of the cephalo-ventral region, but, probably by acting as a competitive inhibitor of phenylalanine, it causes alterations in the muscular cells of the tail.
Details
- Language :
- English
- ISSN :
- 0485-2400
- Volume :
- 20
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Rivista di istochimica, normale e patologica
- Publication Type :
- Academic Journal
- Accession number :
- 139672