Sub-lethal effects of six neonicotinoids on avoidance behavior and reproduction of earthworms (Eisenia fetida)

Ecotoxicology and Environmental Safety
Jing GeXiangyang Yu

Abstract

Avoidance behavior of earthworms (Eisenia fetida) against six neonicotinoids (NEOs) (acetamiprid, dinotefuram, clothianidin, thiacloprid, nitenpyram, imidacloprid) was studied following the protocol of ISO. The results showed obvious avoidance behavior of E. fetida against the tested insecticides, and the medium effective concentration for avoidance behavior (EC50) of the six pesticides was 0.14, 0.55, 0.91, 7.87, 1.32 and 0.77 mg/kg, respectively. Compared to the acute toxicity, avoidance behavior was more sensitive as an indicator of soil contamination with NEOs. Chronic toxicity of above six NEOs to E. fetida was also evaluated; cocoon production, hatchability, cocoon weight and adult weight were all affected in the test. Cocoon production and hatchability were more sensitive than cocoon weight and adult weight. The reproduction of earthworms were significantly reduced with a 56 d half-maximal effective hatchability concentration (EC50) of 0.37, 0.74, 1.30, 3.57, 1.20 and 0.70 mg/kg (acetamiprid, dinotefuram, clothianidin, thiacloprid, nitenpyram, imidacloprid), respectively. Most of the tested NEOs were highly toxic to E. fetida. Avoidance behavior and reproduction damage of E. fetida was observed at very low concentrations...Continue Reading

Citations

Nov 15, 2019·Environmental Toxicology and Chemistry·Cláudia de Lima E SilvaCornelis A M van Gestel
May 28, 2019·Environmental Science and Pollution Research International·Yuhong GaoXuemei Li
Jun 19, 2019·Environmental Toxicology and Chemistry·Ellyn E RitchieJuliska I Princz
Sep 12, 2020·Environmental Pollution·Sidney Fernandes Sales JuniorEnrico Mendes Saggioro
Dec 2, 2020·Environmental Pollution·Felipe Ogliari BandeiraDilmar Baretta
Aug 24, 2019·Ecotoxicology and Environmental Safety·Enrico Mendes SaggioroFábio Veríssimo Correia
Jan 30, 2021·Environmental Science and Pollution Research International·Murilo Martins BernardinoRafael Marques Pereira Leal
Feb 13, 2021·Journal of Environmental Management·Sidney Fernandes Sales JuniorEnrico Mendes Saggioro
Feb 8, 2019·Chemosphere·Fernanda Benedet de SantoJúlia Carina Niemeyer

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