A comprehensive study on the ecotoxicity of ivermectin to earthworms (Eisenia fetida)

• Published in: Ecotoxicology and environmental safety Vol. 268; p. 115709
• Main Authors: Ma, Zhanfei, Zhu, Weifeng, Kang, Jungang, Ma, Xiaoyong, Jiang, Guojun
• Format: Journal Article
• Language: English
• Published: Elsevier 01.12.2023
• Subjects: Earthworm; Gene expression; Growth; Ivermectin; Oxidase stress indexes; Reproduction
• ISSN: 0147-6513; 1090-2414
• DOI: 10.1016/j.ecoenv.2023.115709

Ivermectin (IVM) is a dewormer commonly utilized in animal farming. Nevertheless, there is a deficiency of research on the bioecotoxicity of IVM in soil. In this study, earthworms were utilized as test animals to investigate the ecotoxicological impacts of IVM. The experiment lasted 28 days and involved adding varied doses of IVM to a culture substrate of soil mixed with cow dung and feeding it to earthworms. The experiment entailed recording earthworm weight, number of earthworm cocoons, histological damage, oxidative stress indicators, and gene expression levels. The analysis results showed that earthworm growth and reproduction were hampered by IVM. Moreover, pathological damage to the earthworms increased with increasing IVM concentration, which caused increased oxidative damage to the earthworms. These findings offer a summary of the impact of IVM on earthworms and a reference point for future research examining the ecological implications of IVM.