Seasonal change of microplastics uptake in the Pacific oysters Crassostrea gigas cultured in the Yellow Sea and Bohai Sea, China

Yunchao Du; Jianmin Zhao; Jia Teng; Jingying Ren; Pengfei Zheng; Xiaopeng Zhu; Yongliang Liu; Xiyan Sun; Shihui Yuan; Qing Wang

doi:10.1016/j.marpolbul.2022.114341

Seasonal change of microplastics uptake in the Pacific oysters Crassostrea gigas cultured in the Yellow Sea and Bohai Sea, China

Mar Pollut Bull. 2022 Dec;185(Pt B):114341. doi: 10.1016/j.marpolbul.2022.114341. Epub 2022 Nov 10.

Authors

Yunchao Du¹, Jianmin Zhao², Jia Teng¹, Jingying Ren¹, Pengfei Zheng¹, Xiaopeng Zhu¹, Yongliang Liu³, Xiyan Sun³, Shihui Yuan⁴, Qing Wang⁵

Affiliations

¹ Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
² Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
³ Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
⁴ School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209 16, PR China.
⁵ Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China. Electronic address: [email protected].

PMID: 36372051
DOI: 10.1016/j.marpolbul.2022.114341

Abstract

This study investigated seasonal microplastics (MPs) pollution characteristics in oysters and surrounding surface seawater from five aquaculture farms located at the Yellow Sea and Bohai Sea. MPs abundances in oysters were 2.40 ± 0.14 (winter) to 3.28 ± 0.19 (autumn) items/individual, and 0.22 ± 0.02 (spring) to 0.45 ± 0.06 (summer) items/g (ww). In surface seawater, average seasonal MPs abundances were 3.41 ± 1.06-8.86 ± 2.48 items/L. Fibers were dominant shape, and cellophane and polyethylene terephthalate (PET) were dominant polymers in oysters and surface seawater. Positive correlation was found between oysters' MPs abundance (items/individual) and environmental factors (NO₂-N (r = 0.466), and temperature (r = 0.485)) by Spearman correlation analysis in four seasons. Main environmental factor affecting seasonal MPs abundance of oysters and surface seawater was NH₃-N and SiO₃-Si in summer and winter respectively. In conclusion, seasonal change of MPs uptake in cultured oysters was relatively small.

Keywords: Crassostrea gigas; Environmental factors; Microplastics; Raft culture; Seasonal change; Spatial distribution.

MeSH terms

Animals
China
Crassostrea*
Environmental Monitoring
Microplastics
Plastics
Seasons
Water Pollutants, Chemical* / analysis

Substances

Microplastics
Plastics
Water Pollutants, Chemical