Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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First Report for Appearance and Distribution Patterns of the Epiphytic Dinoflagellates in the Korean Peninsula

우리나라 전국연안해역에서 저서 와편모조류의 출현 및 분포현황에 대한 첫 보고

  • Baek, Seung Ho (Korea Institute of Ocean Science and Technology/South Sea Institute)
  • 백승호 (한국해양과학기술원 남해특성연구부)
  • Received : 2012.11.07
  • Accepted : 2012.12.03
  • Published : 2012.12.31
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Abstract

Genus of Gambierdiscus, Ostrepsis, Prorocentrum, Coolia and Amphidinium are epiphytic ciguatoxin-producing armored dinoflagellate, often attached on macroalgae. These organisms are the primary causative agent of ciguatera fish poisoning which occurs in tropical and subtropical regions. However, regardless of the fact that population of epiphytic dinoflagellates have expanded to such temperate areas from sub-trophic and trophic areas, monitoring of the epiphytic dinoflagellates was greatly lacked in coastal water of Korean Peninsula. This study was performed in the Korean Peninsula in November, 2011. Cell densities of Gambierdiscus spp. on macroalgae ranged from zero to 10 cells $g^{-1}$ and the maximum density was recorded at St.18 (Pohang guryongpo). The abundance of Ostreopsis spp. was highest on macro-algaes Chondrus ocellatus, Lomentaria catenata and Plocamium telfairiae (140 cells $g^{-1}$). The maximum abundance of Prorocentrum, Coolia and Amphidinium were 52, 3 and 1 cells $g^{-1}$, respectively. Of these, Prorocentrum lima was observed at most stations of East Sea. Therefore, our results suggest that the epiphytic armored dinoflagellates may have adapted to Korean coastal water of temperate areas (i.e., East Sea) and those abundances may be related to the macroalgal species.

우리나라 전국연안에서 해조류에 부착한 저서성 부착 맹독와편모조류의 분포특성을 파악하기 위해서 2011년 11월 25일에서 30일 사이 조사하였다. 해조류에 부착하는 맹독와편모조류 Gambierdiscus spp.는 전국 27개 정점 중 5개 정점[St. 6 (전남고흥군), St. 9 (경남남해군), St. 18 (경북 포항시 구룡포), St. 20 (경북 영덕), St. 26 (강원도 양양)]에서 출현하였다. Ostreopsis spp.는 3개 정점의 해조류[St. 11 (잎꼬시래기, 붉은까막살, 애기풀가사리), St. 18 (진두발, 마디잘록이, 참곱슬이), St. 21 (붉은까막살, 마디잘록이, 큰잎모자반)]에서 출현하였으며, 그중, 정점 18에서는 극히 높은 개체수(140 cells $g^{-1}$)가 관찰되었다. Prorocentrum lima는 서해와 남해안에서는 거의 출현하지 않았으나, 동해해역 대부분의 정점에서 높은 밀도로 출현하였다. Coolia spp.는 서해와 남해안에서는 전혀 출현하지 않았으나, 동해해역 일부 정점에서 극히 낮은 밀도로 출현하였다. 결과적으로 아열대성 저서 와편모조류는 우리나라 대부분의 연안해역 (동해를 중심으로)에 정착하고 있다는 것을 확인 할 수 있었고, 그들의 개체수 밀도는 해조류의 기질과 관련이 있을 것이다.

Keywords

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