Bloom development of toxic dinoflagellate Alexandrium catenella (Group I) in Jinhae-Masan Bay, Korea: Germination strategy of resting cysts in relation to temperature and salinity
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Title
- Bloom development of toxic dinoflagellate Alexandrium catenella (Group I) in Jinhae-Masan Bay, Korea: Germination strategy of resting cysts in relation to temperature and salinity
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Author(s)
- Shin, Hyeon Ho; Son, Moon Ho; Park, Bum Soo; Han, Kyung Ha; Youn, Joo Yeon; Kwak, Kyeong Yoon; Lee, Ji Hoon; Shin, A Young; Byun, Eunjung; Yoo, Yeong Du; Seo, Min Ho; Shin, Kyoung Soon; Li, Zhun
- KIOST Author(s)
- Youn, Joo Yeon(윤주연); Kwak, Kyeong Yoon(곽경윤); Lee, Ji Hoon(이지훈); Shin, Kyoung Soon(신경순)
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Alternative Author(s)
- 신현호; 윤주연; 곽경윤; 이지훈; 신아영; 변은정; 신경순
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Publication Year
- 2023-06
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Abstract
- To better understand the role of resting cysts in the outbreak of paralytic shellfish poisoning and bloom dynamics in Jinhae-Masan Bay, Korea, this study investigated the germination features of ellipsoidal Alexandrium cysts isolated from sediments collected in winter and summer under different combinations of temperature and salinity. Morphology and phylogeny of germling cells revealed that the ellipsoidal Alexandrium cysts belong to Alexandrium catenella (Group I). The cysts could germinate across a wide range of temperature (5–25 °C) with germination success within 5 days, indicating that continuous seeding for the maintenance of vegetative cells in the water column may occur through the year without an endogenous clock to regulate germination timing. In addition, the cyst germination of A. catenella (Group I) was not controlled by seasonal salinity changes. Based on the results, this study provides a schematic scenario of the bloom development of A. catenella (Group I) in Jinhae-Masan Bay, Korea.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/44221
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DOI
- 10.1016/j.marpolbul.2023.114995
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Bibliographic Citation
- Marine Pollution Bulletin, v.191, 2023
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Publisher
- Pergamon Press Ltd.
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Keywords
- PSPEllipsoidal cystSeed populationDormancy periodAdaptation
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Type
- Article
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Language
- English
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Document Type
- Article
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