Does climate change increase the risk of marine toxins? Insights from changing seawater conditions

Meng, Ruiyang; Du, Xingde; Ge, Kangfeng; Wu, Chunrui; Zhang, Zongxin; Liang, Xiao; Yang, Jun; Zhang, Huizhen

doi:10.1007/s00204-024-03784-5

Arch Toxicol

2024

DOI: 10.1007/s00204-024-03784-5

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Does climate change increase the risk of marine toxins? Insights from changing seawater conditions

Ruiyang Meng,

Xingde Du,

Kangfeng Ge

et al.

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2024

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Cited by 2 publications

References 193 publications

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Effects of Culture Systems and Nutrients on the Growth and Toxin Production of Karenia selliformis

Wu,

Wang,

Qiu

et al. 2024

Toxins

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Harmful algal blooms (HABs) formed by toxic microalgae have seriously threatened marine ecosystems and food safety and security in recent years. Among them, Karenia selliformis has attracted the attention of scientists and society due to its acute and rapid neurotoxicity in mice. Herein, the growth and gymnodimine A (GYM-A) production of K. selliformis were investigated in diverse culture systems with different surface-to-volume (S/V) ratios and nitrogen/phosphorus concentrations. The results showed that the specific growth rates (μ), maximal cell yields, and GYM-A production levels of K. selliformis increased with higher S/V, but no significant differences were observed under different culture volumes with the same S/V, which indicated that light penetration and gas exchange in the seawater culture systems actually influenced the growth and GYM-A production of K. selliformis. The maximum cell density and photosynthetic efficiency of K. selliformis decreased under nitrogen (N) and phosphorus (P) deficiency, suggesting that the growth of K. selliformis was significantly inhibited by the deficiency in N or P. Both N and P limitation conditions, especially P deficiency, promoted the cellular GYM-A quotas of K. selliformis. In this study, a scientific basis is provided for understanding the effects of culture systems and nutrient concentrations on the growth and toxin production of K. selliformis.

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Effects of Culture Systems and Nutrients on the Growth and Toxin Production of Karenia selliformis

Wu,

Wang,

Qiu

et al. 2024

Toxins

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Bioaccumulation of environmental pollutants and marine toxins in bivalve molluscs: a review

Ochoa-Esteso,

Roselló-Carrió,

Carrasco-Correa

et al. 2024

Explor Foods Foodomics

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Seafood is both nutritionally and economically significant, with bivalve molluscs being particularly valuable for monitoring environmental pollutants due to their filter-feeding nature and ability to bioaccumulate pollutants. While not often linked to food poisoning, these molluscs can occasionally introduce health risks, highlighting the need for vigilant monitoring. This review provides a thorough analysis of pollutants—including persistent and emerging pollutants, as well as marine toxins—found in bivalve molluscs between 2019 and 2024. Among the studied pollutants, plasticizers and alkaloids are the most frequently analyzed, with liquid and gas chromatography (GC) tandem mass spectrometry (MS) the predominant methods, although novel approaches to determine these compounds, such as sensors, have also emerged in recent years. However, many studies are focused on establishing pollutant content without addressing bioaccumulation (BA) factors, and a lack of standardization in species and sampling locations complicates comparisons between the different published works. Despite some studies linking human activity and algal blooms to BA dynamics, more comprehensive research is needed. Additionally, limited data on the depuration capacity of molluscs underscores the need for further investigation. Although pollutant levels generally remain within legal limits, many substances remain unregulated. Environmental factors also play a critical role in influencing BA, emphasizing the need for future studies to focus on BA factors to better understand these complex dynamics.

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Does climate change increase the risk of marine toxins? Insights from changing seawater conditions

Cited by 2 publications

References 193 publications

Effects of Culture Systems and Nutrients on the Growth and Toxin Production of Karenia selliformis

Effects of Culture Systems and Nutrients on the Growth and Toxin Production of Karenia selliformis

Bioaccumulation of environmental pollutants and marine toxins in bivalve molluscs: a review

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