Community-level effects of a neonicotinoid pesticide on the metabolism of freshwater microorganisms

IF 4.1 2区环境科学与生态学 Q1 MARINE & FRESHWATER BIOLOGY

Aquatic Toxicology Pub Date : 2025-03-04 DOI:10.1016/j.aquatox.2025.107311

Alessandra CERA , Sakie KODAMA , Leanne K. FAULKS , Hiroshi HAKOYAMA

引用次数: 0

Abstract

This study provides an ecotoxicological assessment of the effects of the neonicotinoid dinotefuran on freshwater microorganisms. Epilithic biofilm was sampled from a small stream and exposed to dinotefuran for 14 days in Biolog EcoPlates. In general, we found that a concentration of 0.100 mg l^-1 of dinotefuran induced the microorganism community to catabolise carbon sources faster. However, catabolic activity varied depending on the type of carbon source. Catabolism increased for Putrescine (+4673 %), Serine (+376 %), Galacturonic Acid (+206 %), Pyruvic Acid Methyl Ester (+177 %), and Gamma Amino Butyric Acid (+113 %); and decreased for Arginine (-59 %), Asparagine (-26 %), and Mannitol (-21 %). This is the first study in which EcoPlates have been used to investigate the effects of dinotefuran on freshwater epilithic biofilm at an environmentally realistic concentration.

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新烟碱类农药对淡水微生物代谢的影响

本研究对新烟碱类杀虫剂对淡水微生物的影响进行了生态毒理学评价。从一个小溪流中取样，并在Biolog EcoPlates中暴露于呋虫胺14天。总的来说，我们发现浓度为0.100 mg l-1的呋虫胺诱导微生物群落更快地分解碳源。然而，分解代谢活性因碳源的类型而异。腐胺（+ 4673%）、丝氨酸（+ 376%）、半乳糖醛酸（+ 206%）、丙酮酸甲酯（+ 177%）和氨基丁酸（+ 113%）的分解代谢增加；精氨酸（- 59%）、天冬酰胺（- 26%）和甘露醇（- 21%）含量下降。这是EcoPlates首次在环境实际浓度下用于研究呋虫胺对淡水附着生物膜的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aquatic Toxicology 环境科学-毒理学

CiteScore

7.10

自引率

4.40%

发文量

250

审稿时长

56 days

期刊介绍： Aquatic Toxicology publishes significant contributions that increase the understanding of the impact of harmful substances (including natural and synthetic chemicals) on aquatic organisms and ecosystems. Aquatic Toxicology considers both laboratory and field studies with a focus on marine/ freshwater environments. We strive to attract high quality original scientific papers, critical reviews and expert opinion papers in the following areas: Effects of harmful substances on molecular, cellular, sub-organismal, organismal, population, community, and ecosystem level; Toxic Mechanisms; Genetic disturbances, transgenerational effects, behavioral and adaptive responses; Impacts of harmful substances on structure, function of and services provided by aquatic ecosystems; Mixture toxicity assessment; Statistical approaches to predict exposure to and hazards of contaminants The journal also considers manuscripts in other areas, such as the development of innovative concepts, approaches, and methodologies, which promote the wider application of toxicological datasets to the protection of aquatic environments and inform ecological risk assessments and decision making by relevant authorities.