Proceedings of the Korean Environmental Sciences Society Conference (한국환경과학회:학술대회논문집)
- 2005.05a
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- Pages.241-244
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- 2005
First report of blooms of Gonyaulax poly-gramma (Gonyaulacales, Dinophyceae) in the Yeosu waters of the South Sea of Korea
Abstract
The aim of this study was to determine the first outbreaks of nontoxic Gonyaulax polygramma Stein in Yeosu waters in place of harmful Cochlodinium polykrikoides Margalef, which has occurred annually in the same coastal region since 1995. The observation of cellular arrangement and structure by electron microscopy showed that G. polygramma isolated from Yeosu waters had a few spines connecting with mem-branes and prominent longitudinal ridges on the cell surface, with a cingular dis-placement 1.5 times their cell width. Furthermore, the location of the nucleus wasposterior of large oval formation according to electron microscopy. On 6 August, 2004,the first bloom of G. pozygramma occurred, the date of own its disappearance was with a maximum cell density of 8,000 cells ml
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