Utilisation of seaweed carbon by three surface-associated heterotrophic protists, Stereomyxa ramosa, Nitzschia alba and Labyrinthula sp.

E Armstrong, A Rogerson, J W Leftley

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In view of the abundance of protists associated with seaweeds and the diversity of nutritional strategies displayed by protists in general, the ability of 3 closely associated protists to utilise seaweed carbon was investigated. Stereomyxa ramosa, Nitzschia alba and Labyrinthula sp. were cultured with seaweed polysaccharides as well as seaweed itself. N. alba and Labyrinthula sp. were found to utilise seaweed polysaccharides in axenic culture. All 3 protists were capable of penetrating intact but 'damaged' (autoclaved) seaweed particularly when bacteria were present. The possibility that these and other heterotrophic protists are directly removing macroalgal carbon in the field is discussed.
Original languageEnglish
Pages (from-to)49-57
Number of pages9
JournalAQUAT MICROB ECOL
Volume21
Issue number1
Publication statusPublished - 2000

Keywords

  • Ecology
  • MACROALGAE
  • MARINE AMEBA TRICHOSPHAERIUM
  • FRAGMENTATION
  • EELGRASS
  • Marine & Freshwater Biology
  • Microbiology
  • WASTING DISEASE
  • LAMINARIA-PALLIDA
  • KELP ECKLONIA-MAXIMA

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