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

  • 제27권1호
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  • Pages.119-126
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  • 2021
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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유독와편모조류 Alexandrium catenella (Group I)의 마비성패독 생산에 미치는 수온과 염분의 영향

Influence of Water Temperature and Salinity on the Production of Paralytic Shellfish Poisoning by Toxic Dinoflagellate Alexandrium catenella (Group I)

  • Nam, Ki Taek (Department of Oceanography, Pukyong National University) ;
  • Oh, Seok Jin (Department of Oceanography, Pukyong National University)
  • 투고 : 2021.01.18
  • 심사 : 2021.02.25
  • 발행 : 2021.02.28
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초록

본 연구에서는 실내에서 다양한 수온과 염분 조건에서 유독와편모조류 Alexandrium catenella(Group I)의 생장과 함께 마비성패독의 함량을 조사하였다. A. catenella의 수온과 염분 최적생장은 각각 20~30℃과 20~30 psu였으며, 광온성과 광염성종으로 나타났다. A. catenella는 낮은 수온 구간(10℃와 15℃)에서 독함량과 독성이 높게 나타났으며, 염분에 따라서는 차이가 크지 않았다. 따라서 15℃이하의 수온에서 본 종주와 같은 생리적인 특성을 가진 유독와편모조류가 우점한다면, 이매패류는 빠르게 독화될 가능성이 있다. 향후 A. catenella의 출현에 따른 마비성패독 예찰·예보를 위해 다양한 환경변화에 따른 A. catenella의 다른 종주와 상업적인 이매패류 독화에 대한 연구가 더 필요한 것으로 판단된다.

In this study, the variability in paralytic shellfish poisoning (PSP) by the toxic dinoflagellate Alexandrium catenella (Group I) was analyzed under a variety of water temperatures and salinities. This dinoflagellate experienced optimum growth at temperatures and salinities of 20~30℃ and 20~30 psu, respectively. These findings indicate that A. catenella is an eurythermal and euryhaline organism. High toxin contents and toxicities were observed at low temperatures (10 and 15℃), where they were associated with low growth rates; salinity did not have any significant impact on toxicity parameters. Therefore, it is likely that A. catenaella contributes to the rapid intoxication of commercial bivalve when temperatures are ≤15℃. To better estimate PSP caused by A. catenalla, we suggest that the influence of various environmental factors controlling PSP should persist with other A. catenella stains and commercial bivalves.

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피인용 문헌

  1. Salinity Affects Saxitoxins (STXs) Toxicity in the Dinoflagellate Alexandrium pacificum, with Low Transcription of SXT-Biosynthesis Genes sxtA4 and sxtG vol.13, pp.10, 2021, https://doi.org/10.3390/toxins13100733