期刊
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷 40, 期 1, 页码 163-172出版社
SCIENCE PRESS
DOI: 10.1007/s00343-021-0465-7
关键词
microplastics; bivalves; Jiaozhou Bay; risk assessment
资金
- International Science Partnership Program of the Chinese Academy of Sciences [121311KYSB20190029, 133137KYSB20200002]
- National Natural Science Foundation of China [U2006206]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA19060204, XDA23050303]
- Project from Shandong Academy for Environmental Planning: Research on the Prevention and Control of Marine Microplastic Pollution in Key Industries in Shandong Province
The study investigated microplastic pollution in wild and farmed oysters and clams in the Jiaozhou Bay, China, for the first time, finding that the abundance of microplastics in shellfish was at a moderate level. The average consumption of microplastics through the Chinese diet was estimated to be 1.27x10(3) items per capita per year, with clams showing significantly higher levels of microplastic abundance compared to oysters.
As an emerging pollutant, the presence of microplastics in marine organisms has been concerned increasingly. Shellfish, which are both economically and ecologically important, are of particular concern. In this study, we investigated the microplastic pollution in wild and farmed oysters (Crassostrea gigas) and clams (Ruditapes philippinarum) in the Jiaozhou Bay, China, for the first time. We found the microplastic pollution in shellfish in Jiaozhou Bay was at a moderate level. The abundance of microplastics in shellfish ranged from 0.16 to 12.09 items/g (wet weight, ww) or 1 to 9 items/ind. The average abundance of the ingested microplastics was 1.21 items/g (or 2.17 items/ind.) in all shellfish, 1.51 items/g (or 2.00 items/ind.) in clams and 0.92 items/g (or 2.34 items/ind.) in oysters. The abundance of microplastics in clams was significantly higher than that in oysters. Most microplastics (92.97%) were fibers, followed by fragments. The predominant color of the microplastics was black (42.97%), followed by blue, transparent, and red. Cellophane and polyethylene terephthalate (PET) dominated the microplastic composition. According to shellfish consumption, it can be inferred that the average microplastic consumption through Chinese diet is 1.27x10(3) items per capita per year.
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