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2008년 한국 남해안에서 분리한 유해 와편모조류 Cochlodinium polykrikoides Margelef의 성장에 미치는 수온, 염분 그리고 광조건의 영향

Effects of Water Temperature, Salinity and Irradiance on the Growth of Harmful Dinoflagellate Cochlodinium polykrikoides Margelef isolated from South Sea of Korea in 2008

  • 오석진 (부경대학교 해양과학공동연구소) ;
  • 김창훈 (부경대학교 해양바이오신소재학과) ;
  • 권형규 (부경대학교 해양학과) ;
  • 양한섭 (부경대학교 해양학과)
  • Oh, Seok-Jin (Korea Inter-University Institute of Ocean Science, Pukyong National University) ;
  • Kim, Chang-Hoon (Department of Marine Bio-Materials & Aquaculture, Pukyong National University) ;
  • Kwon, Hyeong-Kyu (Department of Oceanography, Pukyong National University) ;
  • Yang, Han-Soeb (Department of Oceanography, Pukyong National University)
  • 투고 : 2010.08.11
  • 심사 : 2010.12.06
  • 발행 : 2010.12.31

초록

The effects of temperature, salinity and irradiance on the growth of the harmful red tide dinoflagellate Cochlodinium polykrikoides Margelef isolated from the South Sea of Korea were examined in the laboratory. Growth was examined under the following combinations of temperature and salinity: 15, 20, 25 and $30^{\circ}C$, and 15, 20, 25, 30 and 35 psu at a constant irradiance of $180\;{\mu}mol/m^2/s$. No growth was observed with a temperature of $15^{\circ}C$ and a salinitiy of 15 psu. Moderate growth rates of more than 0.30 /day were obtained at $25^{\circ}C$ with salinities of 25.35 psu. These values are similar to in situ observations for this species. The maximum growth rate, 0.35 /day, was obtained at $25^{\circ}C$ and 30 psu. In light experiments, cell growth of C. polykrikoides was conducted with constant temperature ($20^{\circ}C$) and salinity (30 psu) under light photon flux densities (PFD) of 10, 25, 50, 70, 100, 150, 250 and $350\;{\mu}mol/m^2/s$. C. polykrikoides did not grow at $10\;{\mu}mol/m^2/s$. Cell growth was observed at irradiance values of $25\;{\mu}mol/m^2/s$ and above. The irradiance-growth curve was described as ${\mu}=0.30{\cdot}(I-15.27)/(I+27.22)$, (r=0.99). This suggests a compensation PFD of $15.27\;{\mu}mol/m^2/s$ and a maximum growth rate of 0.30 /day. In conclusion, C. polykrikoides prefers high salinity, temperature and irradiance in summer in Korea. These results provide important information for understanding the mechanism of C. polykrikoides blooms and developing technology to predict blooms of this organism in the field.

키워드

참고문헌

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피인용 문헌

  1. Growth Response of the Dinoflagellate Akashiwo sanguinea in Relation to Temperature, Salinity and Irradiance, and its Advantage in Species Succession vol.20, pp.1, 2014, https://doi.org/10.7837/kosomes.2014.20.1.001
  2. Optimal Growth Model of the Cochlodinium Polykrikoides vol.26, pp.4, 2014, https://doi.org/10.9765/KSCOE.2014.26.4.217
  3. Global parameter estimation of the Cochlodinium polykrikoides model using bioassay data vol.35, pp.2, 2016, https://doi.org/10.1007/s13131-016-0806-0
  4. Effects of Irradiance on the Growth of the Toxic Dinoflagellates Alexandrium tamarense and Alexandrium catenella vol.22, pp.12, 2013, https://doi.org/10.5322/JESI.2013.22.12.1571