1. Chronic exposure to high-density polyethylene microplastic through feeding alters the nutrient metabolism of juvenile yellow perch (Perca flavescens)
- Author
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Lu, Xing, Deng, Dong-Fang, Huang, Fei, Casu, Fabio, Kraco, Emma, Newton, Ryan J, Zohn, Merry, Teh, Swee J, Watson, Aaron M, Shepherd, Brian, Ma, Ying, Dawood, Mahmound AO, and Mendoza, Lorena M Rios
- Subjects
Agricultural ,Veterinary and Food Sciences ,Fisheries Sciences ,Nutrition ,Digestive Diseases ,Liver Disease ,Metabolic and endocrine ,Oral and gastrointestinal ,Dietary exposure ,Intestinal microbiota ,Liver metabolomics ,Microplastics ,Nutrient composition ,Yellow perch ,Animal production ,Food sciences ,Zoology - Abstract
Microplastics are emergent contaminants threatening aquatic organisms including aquacultured fish. This study investigated the effects of high-density polyethylene (HDPE, 100 to 125 μm) on yellow perch (Perca flavescens) based on integrative evaluation including growth performance, nutritional status, nutrient metabolism, fish health, and gut microbial community. Five test diets (0, 1, 2, 4, or 8 g HDPE/100 g diet) containing 41% protein and 10.5% lipid were fed to juvenile perch (average body weight, 25.9 ± 0.2 g; n = 15) at a feeding rate of 1.5% to 2.0% body weight daily. The feeding trial was conducted in a flow-through water system for 9 wk with 3 tanks per treatment and 15 yellow perch per tank. No mortality or HDPE accumulation in the fish was found in any treatments. Weight gain and condition factor of fish were not significantly impacted by HDPE (P > 0.05). Compared to the control group, fish fed the 8% HDPE diet had significantly decreased levels of protein and ash (P
- Published
- 2022