Effects of polluted and non-polluted suspended sediments on the oxygen consumption rate of olive flounder, Paralichthys olivaceus. (May 2020)

• Record Type: Journal Article
• Authors: Chu, Seung Oh; Lee, Changkeun; Noh, Junsung; Song, Sung Joon; Hong, Seongjin; Ryu, Jongseong; Lee, Jung-Suk; Nam, Jungho; Kwon, Bong-Oh; Khim, Jong Seong
• Is Part Of: Marine pollution bulletin. Volume 154(2020)
• Publication Date: 2020-05
• Subjects: Suspended sediment -- Heavy metal -- Marine benthic organism -- Oxygen consumption rate -- Sediment toxicity test; 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.2020.111113
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: The potential ecological impacts of elevated suspended sediments (SS) in coastal areas due to human activities remain unclear. In particular, physiological response of benthic fish to SS exposure in polluted environment has not been documented. We determined sub-lethal toxicity of polluted and non-polluted SS to olive flounder. Test organism was exposed to varying concentrations of SS (0–4000 mg L −1 ) and real-time oxygen consumption rate (OCR) was measured for 12 h. The early-juvenile was sensitive to SS, particularly at >500 mg L −1, but late-juvenile was tolerant up to 4000 mg SS L −1 . Metal polluted SS (HQmetal > 1) increased OCR in general, particularly at >1000 SS mg L −1 . Combined effect of copper and SS exposure on fish was either synergistic or antagonistic. Overall, potential adverse effect of polluted SS on fish greatly varied at different life stage and/or by metal pollution gradients. Graphical abstract: Unlabelled Image Highlights: Suspended sediment adversely impacted fish in time- and concentration-dependent manner. Small fish showed sensitive response to elevated SS, but large one responded rather tolerantly. SS polluted with elevated heavy metals increased acute fish toxicity synergistically. Adverse effect on fish by mixture of dissolved copper and non-polluted SS was not additive.