Evaluation of ecotoxicological effects associated with coastal sediments of the Yellow Sea large marine ecosystem using the marine copepod Tigriopus japonicus. (August 2022)

• Record Type: Journal Article
• Authors: Park, Shin Yeong; Lee, Junghyun; Hong, Seongjin; Kim, Taewoo; Yoon, Seo Joon; Lee, Changkeun; Kwon, Bong-Oh; Hu, Wenyou; Wang, Tieyu; Khim, Jong Seong
• Is Part Of: Marine pollution bulletin. Volume 181(2022)
• Publication Date: 2022-08
• Subjects: Copepod -- In vivo bioassay -- Sediment -- PAHs -- Asia; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2022.113937
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: A copepod bioassay with Tigriopus japonicus was applied to evaluate the relative ecotoxicity of sediments in the Yellow and Bohai seas, and contributions of individual PAHs to copepod toxicity were evaluated. Mean toxicity was greatest in the Yellow Sea of China, followed by the Bohai Sea and Yellow Sea of Korea. Elevated concentrations of sedimentary PAHs, alkylphenols, and styrene oligomers back-supported the significant toxicities observed in bioassay. Copepod toxicity in relation to PAHs indicated the greatest contribution by indeno[1, 2, 3 -c, d ]pyrene. However, lacked contribution by PAHs, viz., 2.4 and 3.0 % for the total immobilization and mortality, respectively, indicated a large proportion of unknown toxicants being widely distributed along the Yellow Sea Large Marine Ecosystem (YSLME) coastline. Overall, the present study provides useful baseline information for evaluating the potential sedimentary toxicants, with emphasizing further investigation to identify the unknown toxicants at an LME scale, and elsewhere. Graphical abstract: Unlabelled Image Highlights: Copepod bioassay was applied to assess sediment toxicity in Yellow and Bohai seas. Great ecotoxicity was found in Huludao and Nantong in China and Lake Sihwa in Korea. Copepod toxicity to HMW PAHs was greater than those of LMW PAHs. The contribution of PAHs to the total copepod toxicity in sediments of all sites was low. IcdP, BghiP, BbF, and BkF were identified as major copepod toxicants in sediments.