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-2 s -1  .  A. sanguinea   ,  ,              .  : , Akashiwo sanguinea, , ,  Abstract : The effects of temperature, salinity and irradiance on the growth of the dinoflagellate Akashiwo sanguinea isolated from Jaran Bay were examined in the laboratory. Maximum specific growth rate(0.28 day -1 ) was observed with combination of 25 and 30 psu. Optimal growth ( 80 % of maximum specific growth rate) was obtained at 25 with salinities of 15 35 psu. This results indicated that A. sanguinea is a stenothermal of the high water temperature and euryhaline species. The irradiance-growth curve was described as μ=0.31(I-16.87)/(I+51.19). The compensation photon flux density (I0) and half-saturation photon flux density (KI) were 16.87 μmol m -2 s -1 and 84.93 μmol m -2 s -1 , respectively. In conclustion, A. sanguinea has advantage physiological characteristics for the species succession at the coastal areas in summer with sufficient irradiance, high water temperature and large salinity gradient.

Growth Response of the Dinoflagellate Akashiwo sanguinea in Relation to Temperature, Salinity and Irradiance, and its Advantage in Species Succession