Effects of temperature, salinity, and irradiance on the growth of the dinoflagellate Akashiwo sanguinea [An article from: Journal of Experimental Marine Biology and Ecology]

This digital document is a journal article from Journal of Experimental Marine Biology and Ecology, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The effects of temperature, salinity, and irradiance on the growth of the dinoflagellate Akashiwo sanguinea were examined in the laboratory. The irradiance at the light compensation point (I"0) was 14.40 @mmol m^-^2 s^-^1 and the irradiance at growth saturation (I"s) was 114 @mmol m^-^2 s^-^1. We exposed A. sanguinea to 48 combinations of temperature (5-30 ^oC) and salinity (5-40) under saturating irradiance; it exhibited its maximum growth rate of 1.13 divisions/day at a combination of 25 ^oC and salinity of 20. A. sanguinea was able to grow at temperatures from 10 to 30 ^oC and salinities from 10 to 40. This study revealed that A. sanguinea was a eurythermal and euryhaline organism; in Japan it should have formed blooms in early summer, when salinity was relatively low. In addition, it was noteworthy that A. sanguinea had markedly cold-durability, retaining the motile form of vegetative cells for more than 50 days at 5 ^oC and at salinities of 25-30.