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Marine Biology

, Volume 41, Issue 1, pp 71–77 | Cite as

Effect of temperature on the proliferation of Gymnodinium breve and Gomphosphaeria aponina

  • D. L. Eng-Wilmot
  • W. S. Hitchcock
  • D. F. Martin
Article

Abstract

The effect of temperature on the growth and proliferation of two marine microorganisms, the toxigenic dinoflagellate Gymnodinium breve, and a potential bio-control organism, the blue-green alga Gomphosphaeria aponina, was determined by culturing the organisms in thermal gradients established by heating and cooling the opposite ends of an aluminum bar that had been adapted to hold culture tubes. Gradients were linear and stable for the duration of each trial. There was no relationship between variations in light and growth of the organisms. Gymnodinium breve showed optimum growth at 22°C, and proliferated over a range of temperatures (17° to 30°C). Below 17°C cultures of G. breve declined in growth, and at 4°C the organisms died within 5 h. Above 31°C there was rapid decline in viability of cells, and at 33.5°C the organism died within 24 h. Gomphosphaeria aponina showed optimum growth between 24° and 29°C, with a maximum at 27°C. Growth at temperatures greater than 31°C was minimal, but the organism survived. Limitation may be due to repression of the bio-synthesis of an iron-transport compound.

Keywords

Aluminum Dinoflagellate Thermal Gradient Optimum Growth Rapid Decline 
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 1977

Authors and Affiliations

  • D. L. Eng-Wilmot
    • 1
  • W. S. Hitchcock
    • 1
  • D. F. Martin
    • 1
  1. 1.Department of ChemistryUniversity of South FloridaTampaUSA

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