Risk characteristics of shellfish toxins in Mytilus unguiculatus around the Zhoushan Islands, East China Sea

Guanchao Zheng; Hanyu Che; Haiyan Wu; Ling Cheng; Yuxiang Deng; Mengmeng Guo; Jixing Peng; Lijuan Liu; Zhijun Tan

doi:10.1016/j.marpolbul.2023.115955

Risk characteristics of shellfish toxins in Mytilus unguiculatus around the Zhoushan Islands, East China Sea

Mar Pollut Bull. 2024 Feb:199:115955. doi: 10.1016/j.marpolbul.2023.115955. Epub 2023 Dec 22.

Authors

Guanchao Zheng¹, Hanyu Che², Haiyan Wu¹, Ling Cheng³, Yuxiang Deng¹, Mengmeng Guo¹, Jixing Peng¹, Lijuan Liu³, Zhijun Tan⁴

Affiliations

¹ Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
² College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
³ Shandong Marine Resources and Environment Research Institute, Shandong Key Laboratory of Marine Ecological Restoration, Yantai 264006, China.
⁴ Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China. Electronic address: tanzj@ysfri.ac.cn.

PMID: 38141582
DOI: 10.1016/j.marpolbul.2023.115955

Abstract

The Zhoushan Islands, are an important area for Mytilus unguiculatus aquaculture, and are threatened by potentially harmful algal blooms. However, a full understanding of the risks posed by their toxin residues is still lacking. M. unguiculatus samples were collected from the area between 2020 and 2021 and analyzed for their toxin profiles to assess the contamination status of shellfish toxins. The main toxins detected were the paralytic shellfish toxins (PSTs), gymnodimine (GYM), and domoic acid (DA). Nine PSTs components were detected, the dominant ones being C1, C2, and GTX5, with an overall detection rate of 85.7 %. The detection rate of DA was 55.05 %, and GYM was detected in all samples. The toxin levels in the samples were significantly lower than the European Union regulatory limits, but toxin contamination was generally universal.

Keywords: LC-MS/MS; Mytilus unguiculatus; Shellfish toxins; Temporal distribution; Zhoushan.

MeSH terms

Animals
Dinoflagellida* / chemistry
Harmful Algal Bloom
Heterocyclic Compounds, 3-Ring*
Hydrocarbons, Cyclic*
Imines*
Marine Toxins
Mytilus*
Shellfish / analysis
Shellfish Poisoning*

Substances

Marine Toxins
gymnodimine
Heterocyclic Compounds, 3-Ring
Hydrocarbons, Cyclic
Imines