School of Marine Sciences, Zhuhai Key Laboratory of Marine Bioresources and Environment, Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Sun Yat-Sen University, Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China.
School of Ecology, Sun Yat-Sen University, Guangzhou 510275, China.
J Hazard Mater. 2023 Oct 5;459:132289. doi: 10.1016/j.jhazmat.2023.132289. Epub 2023 Aug 12.
The global surge in disinfection practices from the COVID-19 response has raised concerns about the marine exposure to the hazardous ingredients in disinfectant products, including triclosan (TCS) and triclocarban (TCC). However, there are very limited studies on the response of marine TCS and TCC (TCs) loading to the COVID-19 pandemic. Here we used cetaceans as bio-indicators for a long-term retrospective analysis of TCs loading to the South China Sea (SCS) between 2004 and 2022. Hepatic TCs was 100% detected in all nine cetacean species (n = 120). Interestingly, TCS concentrations decreased in Indo-Pacific humpback dolphins (IPHD) before the pandemic from 2010 to 2017. However, after 2019, TCS concentrations in IPHD significantly increased several-fold. Similarly, post-pandemic TCS concentrations in Indo-Pacific finless porpoises (IPFP) and two fish species were significantly higher than pre-pandemic levels. There were significant relationships between thyroid hormones (THs) and TCs in IPHD and IPFP, suggesting that increased TCs may worsen the interference of THs homeostasis and nutritional conditions in cetaceans. These findings demonstrate the profound impact of the surging use of TCs-containing products from the COVID-19 response on marine ecosystems.
由于 COVID-19 疫情防控措施中消毒剂的广泛使用，人们越来越担心海洋环境会接触到这些消毒产品中的有害成分，包括三氯生（TCS）和三氯卡班（TCC）。然而，目前关于海洋 TCS 和 TCC（TCs）负荷对 COVID-19 大流行响应的研究非常有限。在这里，我们使用鲸目动物作为生物指标，对 2004 年至 2022 年期间南海（SCS）TCs 负荷进行了长期的回顾性分析。在所研究的 9 种鲸目动物（n=120）中，均 100%检测到了肝脏 TCs。有趣的是，在疫情之前，从 2010 年到 2017 年，印度太平洋驼背豚（IPHD）体内 TCS 浓度降低了。然而，2019 年之后，IPHD 体内 TCS 浓度显著增加了数倍。同样，疫情后印度太平洋江豚（IPFP）和两种鱼类的 TCS 浓度明显高于疫情前水平。在 IPHD 和 IPFP 中，甲状腺激素（THs）与 TCs 之间存在显著的关系，这表明增加的 TCs 可能会恶化 THs 内稳态和鲸类营养状况的干扰。这些发现表明，COVID-19 疫情防控措施中消毒剂的大量使用，对海洋生态系统产生了深远的影响。
