微塑料通过肠道微生物群改变了过鱼的食物利用
Jun-Nan Huang1,2, Bin Wen1,2,3, Zhuo-Nan Wang4
1Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China.
Environmental science & technology
|June 16, 2025
概括
微塑料 (MPs) 通过改变肠道微生物来改变银鱼的食. 这增加了动物浮游生物的消费,但减少了植物浮游生物的摄入量,影响了水生生态系统.
科学领域:
- 环境科学 环境科学
- 水生生态学 水生生态学
- 微生物组研究 微生物组研究
背景情况:
- 微塑料 (MP) 是水生环境中普遍存在的污染物.
- 国会议员对过鱼的养行为的影响在很大程度上是未知的.
- 银鱼是一种浮游动物鱼,是许多水生食物网中的关键物种.
研究的目的:
- 调查微塑料暴露如何影响银鱼的养效率.
- 了解肠道微生物群在调解这些影响中的作用.
- 评估对水生生态系统的生态影响.
主要方法:
- 银鱼被暴露在微塑料中.
- 分析了养效率,肠道微生物群组成 (基因丰富度) 和肠道代谢量.
- 没有细菌的斑马鱼和白银鱼被用于便微生物群移植实验.
主要成果:
- 微塑料暴露增加了动物浮游生物利用效率 (28.45%至38.63-40.20%),并降低了植物浮游生物利用效率 (50.64%至40.47-43.32%).
- 微塑料改变了肠道微生物群,增加了蛋白酶基因丰富度,减少了碳水化合物酶基因丰富度.
- 代谢分析显示了氨基酸和有机酸的变化,与肠道微生物群功能和鱼类饮食有关.
结论:
- 微塑料通过调节它们的肠道微生物群,显著改变了白银鱼的食策略.
- 肠道微生物群在调解微塑料对鱼类食利用的影响方面发挥着至关重要的作用.
- 这些发现凸显了微塑料对浮游生物鱼类的生态风险以及水生生态系统潜在的级联效应.
更多相关视频
05:31Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
16.2K
06:46Accumulation and Distribution of Fluorescent Microplastics in the Early Life Stages of Zebrafish
Published on: July 4, 2021
4.9K
相关概念视频
01:30Marine Microbial Ecology
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
01:24Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...
01:30Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
01:21Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...