Trace metal bioaccumulation in oysters (Crassostrea gigas) from Liaodong Bay (Bohai Sea, China)

• Published in: Environmental Science and Pollution Research
• Main Authors: Liu, Yonghua, Xu, Jiayu, Wang, Yong, Yang, Song
• Other Authors: the Natural Fund Guidance Program of Liaoning Provincial of China, the Key Research and Development Guidance Program of Liaoning Province of China, the College students' innovation and entrepreneurship training program of Liaoning Provincial of China
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Science and Business Media LLC 2021
• Subjects: Health, Toxicology and Mutagenesis; Pollution; Environmental Chemistry; General Medicine; Crassostrea gigas
• Online Access: http://dx.doi.org/10.1007/s11356-020-11968-6; https://link.springer.com/content/pdf/10.1007/s11356-020-11968-6.pdf; https://link.springer.com/article/10.1007/s11356-020-11968-6/fulltext.html

Abstract Cd, Cr, Cu, Pb, and Zn concentrations were measured in oysters ( C. gigas ), plankton, and seawater during spring, summer, and autumn in Liaodong Bay (Bohai Sea, China) to elucidate the effects of season, region, and oyster size on metal bioaccumulation in oysters. Metal concentrations were quantified via atomic absorption spectrophotometry. Our study determined that metal concentrations in oysters, plankton, and seawater were the highest in summer, whereas the lowest levels occurred in autumn. Regarding oyster sizes, the highest Pb levels occurred in C3-sized oysters (> 5-cm length), whereas the highest Cd, Cr, Cu, and Zn levels occurred in C2 (3–5-cm length) oysters. In contrast, the lowest Cu and Pb levels occurred in C1 (< 3-cm length) oysters, whereas the lowest mean Cd, Cr, and Zn concentrations were observed in C3 oysters. Significant differences in trace metal concentrations in the three sample types were observed in all sampling sites.