Assessing the toxicity of herbicide isoproturon on Aporrectodea caliginosa (Oligochaeta) and its fate in soil ecosystem
Assessing the toxicity of herbicide isoproturon on Aporrectodea caliginosa (Oligochaeta) and its fate in soil ecosystem
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DOI：
10.1002/tox.20437
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发表时间：
2009-08
影响因子：
4.5
通讯作者：
Y. Mosleh
中科院分区：
文献类型：
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作者：
Y. Mosleh
本研究旨在在实验室条件下测定土壤和成熟蚯蚓中异丙隆及其代谢物1-(4-异丙基苯基)-3-甲基脲、1-(4-异丙基苯基)脲和4-异丙基苯胺的残留量。将成熟蚯蚓（Aporectodea caliginosa）暴露于异丙隆浓度（2、4、6、8 和 10 mg kg−1 土壤）污染的土壤中不同时间（7、15、30 和 60 天）。土壤中异丙隆浓度的降低与其初始浓度成反比。在蚯蚓体内检测到的异丙隆浓度在前 15 天内达到最高浓度，此后逐渐下降。研究了异丙隆的急性毒性；评估了蠕虫的总可溶性蛋白质含量和糖原。这些参数的水平与土壤和蚯蚓中异丙隆的浓度有关。即使在土壤浓度为 1200 mg kg−1 的情况下，暴露 60 天后也没有观察到异丙隆的致死作用。在所有接受治疗的蠕虫中观察到总可溶性蛋白减少（最多 59.54%）。这项研究建议使用蚯蚓的总可溶性蛋白含量和糖原作为暴露于异丙隆的生物标志物。 © 2008 Wiley periodicals, Inc. Environ Toxicol，2009。
This study was conducted to determine the residues of isoproturon and its metabolites, 1‐(4‐isopropylphenyl)‐3‐methylurea, 1‐(4‐isopropylphenyl) urea, and 4‐isopropylanilin in soil and mature earthworms under laboratory conditions. Mature earthworms (Aporrectodea caliginosa) were exposed for various durations (7, 15, 30, and 60 days) to soils contaminated with isoproturon concentrations (2, 4, 6, 8, and 10 mg kg−1 soil). The decrease in isoproturon concentration in the soil was inversely correlated to it's initial concentration. The highest concentration detected for isoproturon in earthworms was observed during the first 15 days and decreased thereafter. Acute toxicity of isoproturon was investigated; total soluble protein content and glycogen of the worms were evaluated. Levels of these parameters were related to isoproturon concentration in soil and earthworms. No lethal effect of isoproturon was observed even at the concentration of 1200 mg kg−1 soil after 60 days of exposure. A reduction of total soluble protein was observed in all treated worms (maximum 59.54%). This study suggests the use of the total soluble protein content and glycogen of earthworms as biomarkers of exposure to isoproturon. © 2008 Wiley Periodicals, Inc. Environ Toxicol, 2009.