Effects of temperature, salinity, and irradiance on the growth of the dinoflagellate Akashiwo sanguinea

Tadashi Matsubara, Sou Nagasoe, Yasuhiro Yamasaki, Tomoyuki Shikata, Yohei Shimasaki, Yuji Oshima, Tsuneo Honjo

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72 Citations (Scopus)

Abstract

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 (I0) was 14.40 μmol m- 2 s- 1 and the irradiance at growth saturation (Is) was 114 μmol m- 2 s- 1. We exposed A. sanguinea to 48 combinations of temperature (5-30 °C) and salinity (5-40) under saturating irradiance; it exhibited its maximum growth rate of 1.13 divisions/day at a combination of 25 °C and salinity of 20. A. sanguinea was able to grow at temperatures from 10 to 30 °C 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 °C and at salinities of 25-30.

Original languageEnglish
Pages (from-to)226-230
Number of pages5
JournalJournal of Experimental Marine Biology and Ecology
Volume342
Issue number2
DOIs
Publication statusPublished - Apr 16 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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