Effects of temperature, salinity and irradiance on the growth of the toxic dinoflagellate
Gymnodinium catenatum (Dinophyceae) isolated from Hiroshima Bay, Japan |
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| Authors: | TAMIJI YAMAMOTO SEOK JIN OH AND YUKIHIRO KATAOKA |
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| Institution: | Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan |
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| Abstract: | ABSTRACT: Temperature and salinity ranges in which Gymnodinium catenatum (Hiroshima Bay strain) showed specific growth rates higher than 0.2/day were approximately 20–30°C and 20–32. The specific growth rate (μ), expressed as a polynomial equation as functions of temperature ( T ; °C) and salinity ( S ) were μ = (?6.84 × 10?4 T 2 + 0.0354 T – 0.213) × (?1.03 × 10?3 S 2 + 0.0579 S – 0.548)/0.31; the maximum growth rate (0.31/day) was obtained at 25°C and 30. From a comparison with field data recording temperature, salinity and light intensity, this species may be expected to bloom from summer to autumn in Hiroshima Bay. |
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| Keywords: | growth Gymnodinium catenatum irradiance salinity temperature |
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