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Marine Biology

, Volume 80, Issue 1, pp 103–107 | Cite as

Seasonal changes in the chemical composition of Sargassum muticum

  • J. Gorham
  • S. A. Lewey
Article

Abstract

The alga Sargassum muticum (Yendo) Fensholt, a member of the Phaeophyceae, exhibits a growth cycle at Bembridge, Isle of Wight (UK), in which large annual fronds develop from much smaller perennating structures. Seasonal changes between April 1977 and June 1978 in the chemical composition of the alga were recorded. The content of inorganic ions, alginate and the dry weight: fresh weight ratio were relatively constant. Mannitol, laminaran and polyphenolic compounds were at their maxima in early summer (June/July), when the plant was undergoing rapid extension growth. In contrast, the protein content was highest in winter and early spring. It was concluded that the elongation phase which occurred in the spring was not supported by the use of stored polysaccharide reserves, since the amounts present were insufficient for this purpose and increased during the period of most rapid growth.

Keywords

Polysaccharide Protein Content Alginate Mannitol Rapid Growth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • J. Gorham
    • 1
  • S. A. Lewey
    • 1
  1. 1.Department of Biological SciencesPortsmouth PolytechnicPortsmouthEngland

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