Combined Effects of Temperature and Toxic Algal Abundance on Paralytic Shellfish Toxic Accumulation, Tissue Distribution and Elimination Dynamics in Mussels Mytilus coruscus

文献类型： 外文期刊

第一作者： Tang, Yunyu

作者： Tang, Yunyu;Zhang, Haiyan;Wang, Yu;Fan, Chengqi;Shen, Xiaosheng

作者机构： Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Jungong 300, Shanghai 200090, Peoples R China

关键词： harmful algal blooms; paralytic shellfish toxins; pharmacokinetics; environmental changes; A; catenella

期刊名称：TOXINS （ 2020影响因子：4.546； 五年影响因子：4.8 ）

ISSN：

年卷期： 2021 年 13 卷 6 期

页码：

收录情况： SCI

摘要： This study assessed the impact of increasing seawater surface temperature (SST) and toxic algal abundance (TAA) on the accumulation, tissue distribution and elimination dynamics of paralytic shellfish toxins (PSTs) in mussels. Mytilus coruscus were fed with the PSTs-producing dinoflagellate A. catenella under four simulated environment conditions. The maximum PSTs concentration was determined to be 3548 mu g STX eq.kg(-1), which was four times higher than the EU regulatory limit. The increasing SST caused a significant decline in PSTs levels in mussels with rapid elimination rates, whereas high TAA increased the PSTs concentration. As a result, the PSTs toxicity levels decreased under the combined condition. Additionally, toxin burdens were assessed within shellfish tissues, with the highest levels quantified in the hepatopancreas. It is noteworthy that the toxin burden shifted towards the mantle from gill, muscle and gonad at the 17th day. Moreover, variability of PSTs was measured, and was associated with changes in each environmental factor. Hence, this study primarily illustrates the combined effects of SST and TAA on PSTs toxicity, showing that increasing environmental temperature is of benefit to lower PSTs toxicity with rapid elimination rates.

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