相关实验视频

Updated: May 23, 2025

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Published on: September 4, 2016

食模式效应:对来自南极和南极水域的四种无脊椎动物的颗粒摄入的影响

Claudia Andrade¹, Taryn Sepúlveda², Bárbara Pinto²

¹Laboratorio de Ecología Funcional, Instituto de La Patagonia, Universidad de Magallanes, Av. Pdte. Manuel Bulnes #01890, Punta Arenas, Chile. claudia.andrade@umag.cl.

Environmental science and pollution research international

|March 12, 2025

概括

微塑料 (MP) 污染对海洋盆地生物产生影响. 捕食者摄入的MP多于食尸动物,这对食物网的能量流动有影响.

科学领域:

海洋生物学海洋生物学
环境科学环境科学
生态毒理学生态毒理学

背景情况:

微塑料 (MP) 污染是一个普遍存在的全球问题,对海洋生态系统构成重大威胁.
越来越多地记录了土生物摄入微塑料的情况,引发了人们对其生态影响的担忧.

研究的目的:

调查选定盆地甲动物和类动物中的微塑料的流行和特征.
分析物种的食策略 (放牧动物与食尸动物) 与微塑料摄入之间的关系.
评估热带水平对微塑料丰富度和大小的影响.

主要方法:

对甲动物 (Lithodes santolla,Grimothea gregaria) 和脚动物 (Nacella deaurata,N. concinna) 的胃内含量分析.
使用富里埃变换红外光谱法 (FTIR) 识别和描述摄入的粒子.
关于微塑料的数量,大小和成分的统计分析,与物种的生态特征相关.

主要成果:

微纤维 (纤维素/光纤) 构成了大部分被摄入的颗粒 (60%).
盆地牧草动物的微塑料发病率和个体数量较高,但与食尸动物相比,它们摄入的微塑料颗粒较小.
第三级消费者每人微塑料的丰富度较低,但摄入的微塑料颗粒较大.

结论:

微塑料的摄入模式根据养策略和盆地社区内的食量水平而有很大差异.
这些发现表明,微塑料污染可能会破坏海洋底层食物网中的能量流和有机物质的可用性.
具有特定功能特征的物种可能更容易受到摄入微塑料的生态后果的影响.

关键词:

地生物体地生物体纤维素纤维素是一种纤维素.美国的FTIR是FTIR.微纤维是一种微纤维.微塑料的污染微塑料的污染热带水平热带水平热带水平

更多相关视频

Design and Use of an Apparatus for Quantifying Bivalve Suspension Feeding at Sea

Design and Use of an Apparatus for Quantifying Bivalve Suspension Feeding at Sea

Published on: September 5, 2018

Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers

Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers

Published on: October 5, 2017

相关概念视频

Optimal Foraging

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.

Trophic Efficiency

Trophic Efficiency

Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.