农药和金属对热带物种褐花虱的慢性毒性研究。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Antonio José Gazonato Neto, Raquel Aparecida Moreira, Douglas de Pádua Andrade, Júlio César Dos Santos Lima, Adrislaine da Silva Mansano, Thandy Junio da Silva Pinto, Michiel Adriaan Daam, Odete Rocha
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引用次数: 0

摘要

对化学品(如金属和杀虫剂)的低级毒性评估通常集中在代表不同分类水平的几个标准测试物种上。最常用的无脊椎动物分类群是甲壳类动物和昆虫幼虫。近年来,寡毛纲的一些物种作为试验生物受到越来越多的关注,尽管迄今为止评估的分类群数量仍然有限。在之前的研究中,我们成功地使用了本地热带寡毛藻Allonais inaequalis来评估金属(镉、铜、汞和锰)和农药(双脲和呋喃)的急性毒性。因此,本研究的目的是评估该物种对慢性(12d)暴露于这些化合物的敏感性。慢性毒性顺序与急性毒性顺序相同:铜(死亡率12d-EC10 2.22µg Cu2+/L) >汞(22.29µg Hg2+/L) >镉(138.59µg Cd2+/L) >锰(5650µg Mn2+/L)和呋脲(46.32µg/L) >二脲(6751.42µg/L)。与急性毒性试验相比,慢性毒性试验没有显著增加。在暴露于金属和杀虫剂后,由于应对化学压力所需的能量重新分配,以体长衡量的生长受到阻碍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chronic Toxicity of Pesticides and Metals to the Tropical Species Allonais inaequalis (Oligochaeta: Naididae).

Lower-tier toxicity assessments of chemicals, such as metals and pesticides, are typically focused on a few standard test species representing different taxonomic levels. Invertebrate taxa most frequently used are the crustacean and insect larvae. In recent years, some species of Oligochaeta have received increasing attention as test organisms, although the number of taxa evaluated so far is still limited. In previous studies, we successfully used the indigenous tropical oligochaete Allonais inaequalis to assess the acute toxicity of metals (cadmium, copper, mercury, and manganese) and pesticides (diuron and carbofuran). The aim of the present study was therefore to assess the sensitivity of this species to chronic (12d) exposure to these compounds. The order of chronic toxicity was the same as that denoted in the acute tests: copper (mortality 12d-EC10 2.22 µg Cu2+/L) > mercury (22.29 µg Hg2+/L) > cadmium (138.59 µg Cd2+/L) > manganese (5650 µg Mn2+/L) and carbofuran (46.32 µg/L) > diuron (6751.42 µg/L). Chronic toxicity did not increase significantly compared to the acute toxicity tests. Growth, measured as body length, was hindered after exposure to the metal and pesticides due to an energy reallocation needed to cope with the chemical stress.

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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
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