Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China; Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China.
Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China; Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China.
Mar Pollut Bull. 2020 Sep;158:111313. doi: 10.1016/j.marpolbul.2020.111313. Epub 2020 Jun 17.
More frequent events and geographic expansion of benthic harmful algal blooms have been reported in recent years. An unexpected bloom of benthic P. concavum occurred in Xincun Bay, Hainan Island, the South China Sea was monitored in August 2018. Species identification, toxin analysis and toxicity test were conducted in the study. Quantitative study revealed that P. concavum had a high cell density on the surface of substrates and in water column. The bloom forming species was identified based on the morphology and phylogeny. Toxin analysis indicated that there were no detectable DSP toxins either in algae or in shellfish samples. The result of toxicity test revealed that the extracts of P. concavum caused the mortality of brine shrimp larvae (Artemia salina). The results from this study may provide more insight into the rising threats of harmful dinoflagellate blooms to marine benthic ecosystems.
近年来，报道了底栖有害藻类水华事件的频率增加和地理范围扩大。2018 年 8 月，南海海南岛新村湾监测到底栖 P. concavum 的异常水华。本研究进行了物种鉴定、毒素分析和毒性试验。定量研究表明，P. concavum 在基质表面和水柱中有很高的细胞密度。根据形态和系统发育，确定了形成水华的物种。毒素分析表明，藻类和贝类样本中均未检测到可检出的 DSP 毒素。毒性试验结果表明，P. concavum 的提取物导致卤虫（Artemia salina）幼虫死亡。本研究结果可能更深入地了解有害甲藻水华对海洋底栖生态系统的威胁不断增加。
