Effects of nutrients on growth of the red-tide dinoflagellate Gyrodinium instriatum Freudenthal et Lee and a possible link to blooms of this species

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

Research output: Contribution to journalArticle

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Abstract

We investigated the impact of different nitrogen (N) and phosphorus (P) compounds and concentrations on the growth of Gyrodinium instriatum Freudenthal et Lee in laboratory experiments, and possible links to blooms of this species at Hakozaki Fishing Port, Fukuoka, Japan. G. instriatum utilized only inorganic N compounds as N sources for growth. In contrast, G. instriatum utilized many inorganic and organic phosphorus compounds. We used the Monod equation to describe the growth rate of G. instriatum in N- or P-limited batch cultures as a function of ambient nutrient concentrations. Kinetic growth parameters for maximum specific growth rate (μmax) and half-saturation nutrient concentration (KS) were 0.57 divisions d-1 and 14.2 μmol l-1, respectively, under N-limitation and 0.65 divisions d-1 and 1.75 μmol l-1, respectively, under P-limitation. Compared with these KS values, all in situ average dissolved inorganic nitrogen (DIN) concentrations in Hakozaki Fishing Port were higher than KS for N, but all in situ average dissolved inorganic phosphorus (DIP) concentrations were lower than KS for P, whether a red tide occurred or not bloom. Moreover, average DIP concentration in April (a month critical to red-tide genesis) of 2004 (a non-red-tide year) was less than half those in 2002 and 2003 (red-tide years). Thus, differences in DIP concentrations may be an important factor controlling blooms of G. instriatum in Hakozaki Fishing Port.

Original languageEnglish
Pages (from-to)225-238
Number of pages14
JournalHydrobiologia
Volume651
Issue number1
DOIs
Publication statusPublished - Sep 2010

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dissolved inorganic phosphorus
red tide
inorganic phosphorus
algal blooms
dinoflagellate
algal bloom
fishing
nutrient
nutrients
nutrient content
organic phosphorus
dissolved inorganic nitrogen
organophosphorus compounds
specific growth rate
tides
tide
saturation
Japan
phosphorus
kinetics

All Science Journal Classification (ASJC) codes

  • Aquatic Science

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Effects of nutrients on growth of the red-tide dinoflagellate Gyrodinium instriatum Freudenthal et Lee and a possible link to blooms of this species. / Nagasoe, Sou; Shikata, Tomoyuki; Yamasaki, Yasuhiro; Matsubara, Tadashi; Shimasaki, Yohei; Oshima, Yuji; Honjo, Tsuneo.

In: Hydrobiologia, Vol. 651, No. 1, 09.2010, p. 225-238.

Research output: Contribution to journalArticle

Nagasoe, Sou ; Shikata, Tomoyuki ; Yamasaki, Yasuhiro ; Matsubara, Tadashi ; Shimasaki, Yohei ; Oshima, Yuji ; Honjo, Tsuneo. / Effects of nutrients on growth of the red-tide dinoflagellate Gyrodinium instriatum Freudenthal et Lee and a possible link to blooms of this species. In: Hydrobiologia. 2010 ; Vol. 651, No. 1. pp. 225-238.
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