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Use of frozen and refrigerated Tetraselmis suecica for quick restoration of intensive mass culture of brachionus plicatilis (Müller).

Author(s) : PAPANDROULAKIS N., DIVANACH P., HATZIATHANASIOU A., CHINI-ZITTELLI G., BENGOA-RUIGOMEZ M. V., KENTOURI M.

Summary

B. plicatilis rotifers were fed different concentrations of refrigerated (live) or frozen Tetraselmis suecica biomass, and their reproductive performances were compared to those obtained with the conventional yeast-Selco culture method. Live microalgae were more efficient than frozen, and the higher the concentrations, the shorter the lag phase, and the quicker and higher the initial production. The best results with 1 and 1.5 million live cells/ml reached the critical concentration of exploitation in two days and then allowed a crop of six to seven times the initial population until day 5. In comparision, the control with yeast and Selco only began to be productive on day 6 and did not allow a crop higher than 1.2 times the initial population until day 14. After five days of the initial conditions of boostering, production began to be less efficient due to a beginning of ciliate contamination and clumping of residual phytoplankton. The results are discussed from the technical, biological and economic points of view.

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Pages: 1996-2

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Details

  • Original title: Use of frozen and refrigerated Tetraselmis suecica for quick restoration of intensive mass culture of brachionus plicatilis (Müller).
  • Record ID : 1997-0948
  • Languages: English
  • Source: Refrigeration and Aquaculture.
  • Publication date: 1996/03/20
  • Document available for consultation in the library of the IIR headquarters only.

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