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Assessment of pesticide toxicity on earthworms using multiple biomarkers: a review

期刊

ENVIRONMENTAL CHEMISTRY LETTERS
卷 20, 期 4, 页码 2573-2596

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s10311-022-01386-0

关键词

Pesticide consumption; Earthworm; Sub-lethal effects; Catalase; Enzymes; Genotoxicity

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Pesticides have adverse effects on soil quality and biodiversity, particularly harming earthworms. This review examines the acute and sub-lethal effects of pesticides on earthworms, and discusses the importance of using these effects as biomarkers to assess the risk for non-target organisms.
Two million tonnes of pesticides are currently used globally to improve crop production, yet these pesticides induce adverse effects on soil quality and biodiversity. Moreover, less than 1% of pesticides reach the target pests, while the rest contaminate the surrounding environment. In particular, earthworms are exposed to pesticides and are thus an ideal biological model for ecotoxicological research. Here, we review acute and sub-lethal effects of pesticides on earthworms. We found that pesticides alter growth, reproduction, behaviour, essential enzymes, and DNA of earthworms, even at low pesticide concentrations. These sub-lethal biomarkers allow to evaluate the overall response of an earthworm to pesticides, and to identify the risk for other non-target organisms.

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