不同温度下微塑料对仿刺参肠道的毒性效应研究

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DOI：10.3969/j.issn.1004-6755.2026.04.001

中图分类号：S917.4 文献标志码：A 文章编号：1004—6755（2026）04—0001—04

Study on the toxic effects of microplastics on the intestine of Apostichopus japonicas at different temperatures*

JIANG Xinyu，JIA Wenguang，WU Yuran，YU Zhen， ZHANG Hongxia，LI Rui，XING Ronglian，CHEN Lihong （School ofLife Sciences，YantaiUniversity，Yantai 264oo5，China）

Abstract：The ecological risks of microplastics （MPs） pollution in aquaculture environments have garneredwidespread concern. However，under the context of global warming，the impact of temperature changes on the toxicity of MPs remains poorly understood. In this study， Apostichopus japonicus was exposed to polypropylene（PP） MPs at concentrations of 0，10，10o，and 1000μg/L for 28 days under different temperatures（16，21，and 26∘C ）.The toxic effects on the intestine were evaluated across multiple biological levels，including feeding and defecation rates， tissue structure，and enzyme activities. The results showed that at 26∘C ，MPs exposure significantly inhibited the feeding and defecation rates of A . japonicas，which may be mediated by temperature-induced acceleration of MPs uptake，leading to structural damage to intestinal tissue and a reduction in digestive enzyme activities. Furthermore，MPs induced oxidative stress in the organisms. Under elevated temperature，the significant inhibition of superoxide dismutase（SOD） and catalase（CAT） activities indicated that high temperature further increased the level of oxidative stress. In summary，rising temperatures exacerbate the toxicity of MPs to A. japonicas，highlighting that temperature changes should be taken into account when assessing the ecological risks of MPs.

Key words：microplastics; polypropylene; climate change; toxicity; Apostichopus japonica

微塑料（MPs）因其持久性及生物毒性已成为全球性的水环境污染问题，由于塑料渔具的广泛使用以及水体交换限制等因素，水产养殖环境中MPs丰度普遍高于邻近自然水体1]。（剩余4825字）