Effects of polyethylene and polyvinyl alcohol on growth and protease activity of Acanthopagrus schlegelii juveniles

Bin Chen; Qianqian Wu; Jun Wang; Sha-Yen Cheng; Fengjiao Liu; Kai Chen; Minggang Cai

doi:10.1016/j.marpolbul.2023.115454

Effects of polyethylene and polyvinyl alcohol on growth and protease activity of Acanthopagrus schlegelii juveniles

Mar Pollut Bull. 2023 Oct:195:115454. doi: 10.1016/j.marpolbul.2023.115454. Epub 2023 Sep 12.

Authors

Bin Chen¹, Qianqian Wu², Jun Wang³, Sha-Yen Cheng⁴, Fengjiao Liu⁵, Kai Chen⁶, Minggang Cai⁷

Affiliations

¹ Key Laboratory of Estuarine Ecological Security and Environmental Health, Education Department of Fujian, Tan Kah Kee College, Xiamen University, Zhangzhou 363105, China; Department of Environmental Science and Engineering, Tan Kah Kee College, Xiamen University, Zhangzhou 363105, China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China.
² College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.
³ Department of Biological Technology, Xiamen Ocean Vocational College, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.
⁴ College of Ocean Science and Resource, National Taiwan Ocean University, Keelung 20224, Taiwan.
⁵ College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China.
⁶ Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China. Electronic address: kchen@xmu.edu.cn.
⁷ Key Laboratory of Estuarine Ecological Security and Environmental Health, Education Department of Fujian, Tan Kah Kee College, Xiamen University, Zhangzhou 363105, China; Department of Biological Technology, Xiamen Ocean Vocational College, Xiamen 361102, China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China. Electronic address: mgcai@xmu.edu.cn.

PMID: 37703631
DOI: 10.1016/j.marpolbul.2023.115454

Abstract

Many plastic products are used in aquaculture. Studying the toxicological effects of plastics differing in water solubility on marine organisms can provide valuable information. In this study, different amounts of polyvinyl alcohol (PVA) and polyethylene (PE) films were embedded in the feed and fed to Acanthopagrus schlegelii. After 1, 2, 4, and 8 weeks, the changes in percentage weight gain (PWG), feed efficiency (FE), pepsin activity (PA), and trypsin activity (TA) were observed. Either fed to PE or PVA, PWG, and FE of the experimental group were lower than those of the control group after eight weeks. Plastics level recovered from digestive tracts, feces, and water were higher in the PE groups than in the PVA groups. PA rose with increased feeding of plastics, but TA showed the opposite trend. TA activity decreased with increased feeding of plastics. Further analysis showed that TA was positively correlated with PWG.

Keywords: Acanthopagrus schlegelii; Pepsin activity; Percentage weight gain; Polyethylene; Polyvinyl alcohol; Trypsin activity.