Comparative size-specific grazing rates in field populations of ciliates and dinoflagellates

S. Neuer, T. J. Cowles

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Specific feeding rates of ciliates and thecate and gymnodinoid dinoflagellates on the natural food spectrum were compared, applying a dual-label isotope method in coastal waters off Oregon, USA. Ciliates had the highest size-specific clearance rates on heterotrophic food sources with an average of 3.9×105 body volumes (BV)h-1. Gymnodinoid dinoflagellates strongly selected for photographic food sources and showed the highest size-specific clearance rates on phototrophs with an average of 2.2×105 BV h-1). The range of clearance rates on photosynthetic organisms in gymnodinoids overlapped with that in the ciliates. Data indicate that in gymnodinoid dinoflagellates, small cells have higher size-specific clearance rates than larger cells. -from Authors

Original languageEnglish (US)
Pages (from-to)259-267
Number of pages9
JournalMarine Ecology Progress Series
Volume125
Issue number1-3
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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