해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제28권6호
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  • Pages.866-873
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  • 2022
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
권호 표지
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유독 와편모조류 Alexandrium pacificum의 생장과 마비성 패독 생산에 미치는 수온과 염분의 영향

Effects of Temperature and Salinity on the Growth and Paralytic Shellfish Toxin (PST) Production by Toxic Dinoflagellate Alexandrium pacificum

  • ;
  • 오석진 (부경대학교 지구환경시스템과학부 해양학전공) ;
  • 김석윤 (부경대학교 지구환경시스템과학부 해양학전공)
  • Li, PeiJin (Major of Oceanography, Division of Earth and Environmental System Sciences, Pukyong National University) ;
  • Oh, Seok Jin (Major of Oceanography, Division of Earth and Environmental System Sciences, Pukyong National University) ;
  • Kim, Seok-Yun (Major of Oceanography, Division of Earth and Environmental System Sciences, Pukyong National University)
  • 투고 : 2022.08.31
  • 심사 : 2022.10.28
  • 발행 : 2022.10.31
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초록

배양실험을 바탕으로 다양한 수온과 염분 조건에서 유독 와편모조류 Alexandrium pacificum (LIMS-PS-2611)의 생장속도와 마비성 패독(PST)의 변화를 조사하였다. A. pacificum는 수온 25℃, 염분 30 psu 조건에서 최대생장속도를 보였으며, 최대생장속도의 70% 이상은 수온 20~25℃, 염분 25~35 psu 구간에서 나타났다. A. pacificum 체내의 PST 주요성분은 N-sulfocarbamoyl계의 C1+2와 GTX5이었으며, 미량성분은 carbamate계의 neoSTX이었다. 수온과 염분에 따른 독함량의 변화를 보면, A. pacificum는 수온 20℃, 염분 30 psu의 조건에서는 비교적 낮은 독 함량을 보였다. 염분의 증가에 따라 독 함량이 증가하는 경향을 나타냈다. 그러나 최대생장속도를 보였던 수온과 염분 조건에서는 낮은 독 함량을 보였다. 따라서 6월 수온이 20-25℃ 범위일 때 발생하는 이매패류 독화현상은 A. pacificum에 의한 영향일 가능성이 있다.

Growth rate and production of the paralytic shellfish poisoning toxin (PST) of a toxic dinoflagellate Alexandrium pacificum (LIMS-PS-2611) isolated from the southern sea of Korea, were examined under various temperatures and salinity conditions. The maximum growth rate (0.28 day-1) was observed under 25℃ and 30 psu. Optimal growth (≥ 70% of maximum growth rate) was obtained between 20~25℃ and 25~35 psu. Among the PSTs of A. pacificum, the principal toxins were C1+2 and GTX5 in N-sulfocarbamoyl toxin group, and minor components were characterized as neoSTXs in the carbamate toxin group. Maximum toxin content was observed under 20℃ and 30 psu, and the toxin content increased with the increase of salinity. Low toxin contents were measured under the temperature and salinity conditions of the maximum growth rate. Therefore, the PSP of bivalve, which occurs at a temperature range of 20-25℃ in June, might have been derived from A. pacificum.

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과제정보

이 논문은 부경대학교 자율창의학술연구비(2021년)에 의하여 연구되었다.

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