Environmentally relevant concentrations of microplastics influence the locomotor activity of aquatic biota

JOURNAL OF HAZARDOUS MATERIALS

卷:414

Article

Sun, Tao^1,2,5  Zhan, Junfei^1,2,5  Li, Fei^1,2,4  Ji, Chenglong^1,2,3,4  Wu, Huifeng^1,2,3,4 

[1] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China

[2] YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China

[3] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China

[4] Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词: Microplastics;    Aquatic biota;    Locomotor activity;    Environmentally relevant concentrations;    Meta-analysis;   

DOI  :  10.1016/j.jhazmat.2021.125581

来源: Elsevier

【 摘 要 】

The occurrence of microplastics (MPs) in various marine and freshwater matrices has attracted great attention. However, the effect of MPs in natural environment on the locomotor performance of aquatic biota is still controversial. Therefore, this meta-analysis was conducted, involving 116 effect sizes from 2347 samples, to quantitatively evaluate the alteration in locomotor behavior of aquatic organisms induced by MPs at environmentally relevant concentrations (<= 1 mg/L, median = 0.125 mg/L). It was shown that MP exposure significantly inhibited the average speed and moved distance of aquatic organisms by 5% and 8% (p < 0.05), respectively, compared with the control, resulting in an obvious reduction of locomotor ability by 6% (p 0.05). Egger's test indicated that the results were stable without publication bias (p 0.05). The complex influence of MPs on the locomotor ability were characterized through random-effects meta-regression analyses, presenting size-, time-, concentration-dependent manners and multi-factors interactions. In addition, several physiological changes, including energy reserve reduction, metabolism disorder, gut microbiota dysbiosis, inflammation response, neurotoxic response, and oxidative stress, of aquatic organisms triggered by MP exposure at environmentally relevant concentrations were also provided, which might account for the MPs-induced locomotor activity decline.

【 授权许可】

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