Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea
The diversity and spatial-temporal distribution of phytoplankton HAB species, contamination status of oyster toxin, and their sources were investigated in Jiangmen oyster farming area based on morphological observation and liquid chromatography-tandem mass spectrometry analysis. The results revealed...
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Elsevier
2025-02-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651325001708 |
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| author | Jian Zou Yayuan Xiao Jiaqi Su Yang Liu Peng Wu Teng Wang Lin Lin Chunhou Li Yu Liu Yong Liu |
| author_facet | Jian Zou Yayuan Xiao Jiaqi Su Yang Liu Peng Wu Teng Wang Lin Lin Chunhou Li Yu Liu Yong Liu |
| author_sort | Jian Zou |
| collection | DOAJ |
| description | The diversity and spatial-temporal distribution of phytoplankton HAB species, contamination status of oyster toxin, and their sources were investigated in Jiangmen oyster farming area based on morphological observation and liquid chromatography-tandem mass spectrometry analysis. The results revealed there were 28 HAB species, including 19 harmless HAB species, two toxic species (Akashiwo sanguinea and Karenia brevis), and seven toxin-producing microalgae (Alexandrium pacificum, Dinophysis caudata, D. miles, D. fortii, Gonyaulax spinifera, Gymnodinium catenatum, and K. mikimotoi). The mean abundance of total HAB species generally showed a trend of increasing from winter to autumn. The total average abundances of toxic HAB species were 269, 265, 321 and 2.6 × 103 cells L−1 in winter, spring, summer and autumn, respectively. Redundancy analysis showed temperature, dissolved oxygen, silicate and phosphate were the key factors related with variations of HAB species. Only spring oyster samples were detected paralytic shellfish toxins (PSTs) (1/15), and the composition included gonyautoxins (GTX1&2) and decarbamoyl gonyautoxin 2 (dcGTX2), with a total toxicity level of 9.96 µg STXeq kg−1. N-sulfocarbamyl (C1) and decarbamoyl gonyautoxin 3 (dcGTX3) were observed in the net-concentrated phytoplankton samples. It is inferred that these five types of PSTs derived from A. pacificum. The cultured oysters were observed five types of low-concentration lipophilic marine toxins (LMTs) including okadaic acid (OA), dinophysis-1 (DTX1), pectenotoxin-2 (PTX2), gymnodimine (GYM), and homo-yessotoxin (homo-YTX). Though the levels of PSTs and LMTs in the cultured oysters were low, the presence highlights a potential threat to the safety of oyster products from HAB species. |
| format | Article |
| id | doaj-art-ac92d06ada10453faf54850c4c1eeb92 |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
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| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-ac92d06ada10453faf54850c4c1eeb922025-02-05T04:31:04ZengElsevierEcotoxicology and Environmental Safety0147-65132025-02-01291117834Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China SeaJian Zou0Yayuan Xiao1Jiaqi Su2Yang Liu3Peng Wu4Teng Wang5Lin Lin6Chunhou Li7Yu Liu8Yong Liu9Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangzhou 510300, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangzhou 510300, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR ChinaSouth China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangzhou 510300, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangzhou 510300, PR China; Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province/ Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province/ Sanya Tropical Fisheries Research Institute, Sanya, Hainan 572018, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province/ Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province/ Sanya Tropical Fisheries Research Institute, Sanya, Hainan 572018, PR ChinaKey Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China; Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangzhou 510300, PR China; Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province/ Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province/ Sanya Tropical Fisheries Research Institute, Sanya, Hainan 572018, PR China; Corresponding author at: Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, PR China.The diversity and spatial-temporal distribution of phytoplankton HAB species, contamination status of oyster toxin, and their sources were investigated in Jiangmen oyster farming area based on morphological observation and liquid chromatography-tandem mass spectrometry analysis. The results revealed there were 28 HAB species, including 19 harmless HAB species, two toxic species (Akashiwo sanguinea and Karenia brevis), and seven toxin-producing microalgae (Alexandrium pacificum, Dinophysis caudata, D. miles, D. fortii, Gonyaulax spinifera, Gymnodinium catenatum, and K. mikimotoi). The mean abundance of total HAB species generally showed a trend of increasing from winter to autumn. The total average abundances of toxic HAB species were 269, 265, 321 and 2.6 × 103 cells L−1 in winter, spring, summer and autumn, respectively. Redundancy analysis showed temperature, dissolved oxygen, silicate and phosphate were the key factors related with variations of HAB species. Only spring oyster samples were detected paralytic shellfish toxins (PSTs) (1/15), and the composition included gonyautoxins (GTX1&2) and decarbamoyl gonyautoxin 2 (dcGTX2), with a total toxicity level of 9.96 µg STXeq kg−1. N-sulfocarbamyl (C1) and decarbamoyl gonyautoxin 3 (dcGTX3) were observed in the net-concentrated phytoplankton samples. It is inferred that these five types of PSTs derived from A. pacificum. The cultured oysters were observed five types of low-concentration lipophilic marine toxins (LMTs) including okadaic acid (OA), dinophysis-1 (DTX1), pectenotoxin-2 (PTX2), gymnodimine (GYM), and homo-yessotoxin (homo-YTX). Though the levels of PSTs and LMTs in the cultured oysters were low, the presence highlights a potential threat to the safety of oyster products from HAB species.http://www.sciencedirect.com/science/article/pii/S0147651325001708HAB species of phytoplanktonAlexandrium pacificumParalytic shellfish poisoningDiarrhetic shellfish poisoningJiangmen oyster farming area |
| spellingShingle | Jian Zou Yayuan Xiao Jiaqi Su Yang Liu Peng Wu Teng Wang Lin Lin Chunhou Li Yu Liu Yong Liu Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea Ecotoxicology and Environmental Safety HAB species of phytoplankton Alexandrium pacificum Paralytic shellfish poisoning Diarrhetic shellfish poisoning Jiangmen oyster farming area |
| title | Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea |
| title_full | Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea |
| title_fullStr | Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea |
| title_full_unstemmed | Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea |
| title_short | Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea |
| title_sort | spatial temporal distribution of phytoplankton hab species and contamination status of oyster toxins under intensive oyster farming in jiangmen coasts the south china sea |
| topic | HAB species of phytoplankton Alexandrium pacificum Paralytic shellfish poisoning Diarrhetic shellfish poisoning Jiangmen oyster farming area |
| url | http://www.sciencedirect.com/science/article/pii/S0147651325001708 |
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