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Article

Variability in Paralytic Shellfish Toxin Profiles and Dinoflagellate Diversity in Mussels and Seawater Collected during Spring in Korean Coastal Seawater

1
Ocean Climate Response and Ecosystem Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea
2
Department of Convergence Study on the Ocean Science and Technology, Ocean Science and Technology School, Korea Maritime and Ocean University, Busan 49112, Republic of Korea
3
Environmental Measurement & Analysis Center, National Institute of Environmental Research, Incheon 22689, Republic of Korea
4
Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
5
Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul 04763, Republic of Korea
6
Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
7
School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, Republic of Korea
8
Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
9
Department of Oceanography, Kunsan National University, Kunsan 54150, Republic of Korea
10
NEB Company, Bucheon 14523, Republic of Korea
*
Author to whom correspondence should be addressed.
Toxins 2024, 16(8), 338; https://doi.org/10.3390/toxins16080338
Submission received: 27 June 2024 / Revised: 29 July 2024 / Accepted: 29 July 2024 / Published: 31 July 2024
(This article belongs to the Section Marine and Freshwater Toxins)

Abstract

Paralytic shellfish toxins (PSTs) are potent neurotoxins produced by certain microalgae, particularly dinoflagellates, and they can accumulate in shellfish in coastal seawater and thus pose significant health risks to humans. To explore the relationship between toxicity and PST profiles in seawater and mussels, the spatiotemporal variations in PST concentrations and profiles were investigated along the southern coast of Korea under peak PST levels during spring. Seawater and mussel samples were collected biweekly from multiple stations, and the toxin concentrations in the samples were measured. Moreover, the dinoflagellate community composition was analyzed using next-generation sequencing to identify potential PST-producing species. The PST concentrations and toxin profiles showed substantial spatiotemporal variability, with GTX1 and GTX4 representing the dominant toxins in both samples, and C1/2 tending to be higher in seawater. Alexandrium species were identified as the primary sources of PSTs. Environmental factors such as water temperature and salinity influenced PST production. This study demonstrates that variability in the amount and composition of PSTs is due to intricate ecological interactions. To mitigate shellfish poisoning, continuous monitoring must be conducted to gain a deeper understanding of these interactions.
Keywords: paralytic shellfish poisoning (PSP); paralytic shellfish toxins (PST); dinoflagellate diversity; microalgae; Alexandrium species; mussel paralytic shellfish poisoning (PSP); paralytic shellfish toxins (PST); dinoflagellate diversity; microalgae; Alexandrium species; mussel

Share and Cite

MDPI and ACS Style

Choi, D.H.; Yang, W.; Kim, Y.-E.; Park, B.S.; Sung, J.; Choi, J.; Rho, J.-R.; Han, Y.S.; Lee, Y. Variability in Paralytic Shellfish Toxin Profiles and Dinoflagellate Diversity in Mussels and Seawater Collected during Spring in Korean Coastal Seawater. Toxins 2024, 16, 338. https://doi.org/10.3390/toxins16080338

AMA Style

Choi DH, Yang W, Kim Y-E, Park BS, Sung J, Choi J, Rho J-R, Han YS, Lee Y. Variability in Paralytic Shellfish Toxin Profiles and Dinoflagellate Diversity in Mussels and Seawater Collected during Spring in Korean Coastal Seawater. Toxins. 2024; 16(8):338. https://doi.org/10.3390/toxins16080338

Chicago/Turabian Style

Choi, Dong Han, Wonseok Yang, Young-Eun Kim, Bum Soo Park, Jiyeon Sung, Jaeho Choi, Jung-Rae Rho, Young Seok Han, and Yeonjung Lee. 2024. "Variability in Paralytic Shellfish Toxin Profiles and Dinoflagellate Diversity in Mussels and Seawater Collected during Spring in Korean Coastal Seawater" Toxins 16, no. 8: 338. https://doi.org/10.3390/toxins16080338

APA Style

Choi, D. H., Yang, W., Kim, Y.-E., Park, B. S., Sung, J., Choi, J., Rho, J.-R., Han, Y. S., & Lee, Y. (2024). Variability in Paralytic Shellfish Toxin Profiles and Dinoflagellate Diversity in Mussels and Seawater Collected during Spring in Korean Coastal Seawater. Toxins, 16(8), 338. https://doi.org/10.3390/toxins16080338

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