Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong SAR, China.
Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong SAR, China.
Sci Total Environ. 2022 Jun 25;827:154281. doi: 10.1016/j.scitotenv.2022.154281. Epub 2022 Mar 2.
Microplastics are ubiquitous in the aquatic environment. However, the occurrence of microplastics in farmed fish is under-researched. Herein, microplastic abundance in the stomach and intestine of marine-cultured hybrid groupers (Epinephelus fuscoguttatus × Epinephelus lanceolatus) in the Pearl River Estuary (PRE) was examined. Microplastics were detected in all fish samples, with an average abundance of 35.36 n/individual or 0.62 n/g. The fish intestine contained more microplastics (23.91 n/individual, i.e., 1.10 n/g) than the stomach (12.80 n/individual, i.e., 0.37 n/g). In addition, the ingested microplastics were predominantly fibre-shaped (70.1%), and nearly 70% were smaller than 1 mm in diameter. Potential factors affecting the ingestion of microplastics by farmed hybrid groupers include fish diet and the availability of microplastics in their feeding habitat.
微塑料在水生环境中无处不在。然而，养殖鱼类中微塑料的存在却鲜有研究。本研究检测了珠江口养殖杂交石斑鱼（褐点石斑鱼×青石斑鱼）胃和肠道中的微塑料丰度。所有鱼样本中均检测到微塑料，平均丰度为 35.36 个/个体或 0.62 个/克。鱼肠道中的微塑料（23.91 个/个体，即 1.10 个/克）多于胃（12.80 个/个体，即 0.37 个/克）。此外，摄入的微塑料主要为纤维状（70.1%），近 70%的微塑料直径小于 1 毫米。影响养殖杂交石斑鱼摄入微塑料的潜在因素包括鱼类饮食和其摄食栖息地中微塑料的可获得性。
