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The Korean Society of Phycology (한국조류학회(藻類))
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Temporal changes in the abundance of the fish-killing dinoflagellate Karlodinium veneficum (Dinophyceae) in Tongyeong, Korea

  • Park, Tae-Gyu (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Ok, Yu-Ran (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Park, Young-Tae (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute (NFRDI)) ;
  • Lee, Chang-Kyu (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute (NFRDI))
  • Received : 2011.06.25
  • Accepted : 2011.08.23
  • Published : 2011.09.15
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Abstract

The toxic dinoflagellate Karlodinium veneficum has been implicated in numerous fish kill events around the world. Since this species commonly co-occurs with other morphologically similar dinoflagellates, field monitoring of this species in natural waters via light microscopy only has been problematic. In this study, we investigated temporal changes in K. veneficum's abundance in the waters of Obido, Tongyeong, using a species-specific real-time polymerase chain reaction (PCR) assay. The field survey, from April to December 2010, revealed K. veneficum occurred at low densities (12 to 425 cells $L^{-1}$) during this time and that cell numbers peaked in June (early summer in Korea), indicating this species generally occurs in the warmer season (mostly at $16.9-22.3^{\circ}C$ and 33.4-34.5‰) in the Obido area.

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References

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