Paraphysomonas imperforata (Protista, Chrysomonadida) under different turbulence levels: feeding, physiology and energetics

lngestion rates of Paraphysornonas imperforata Lucas feedlng on bacteria were studied under a range of turbulence ~ntensities. Turbulence had no effect on per cell ingestion rates of flagellates either upon initial exposure to turbulent conditions or after 12 h under the turbulence treatment. Flagellates increased in numbers and decreased in size at all turbulence intensities as well as in nonturbulence treatments, probably as an adaptation to an environment with lower food concentration than the stock cultures. Flagellates under high turbulence (ca 15 cm2 S-" were significantly smaller and inore abundant after 12 h than in the non-turbulence treatment. Total grazing on the bactenal population is thus implied to be hlgher under high turbulence Flagellate gross growth efficienc~es were not statistically different between the turbulence treatments and their non-turbulent controls. When the responses to turbulence are compared to those for calanoid copepods some similarities can be seen (decrease in size and faster development times).

• Publication year

  1996

• Venue

  Oceanographic Literature Review

• Publication date

  1996-04-25

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.3354/MEPS134235
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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