Toxicity of imidacloprid to the terrestrial isopod Porcellio scaber (Isopoda, Crustacea)

Chemosphere
Damjana DrobnePolonca Trebse

Abstract

Imidacloprid is a neonicotinoid insecticide with neurotoxic action that, as a possible alternative for commonly used organophosphorus pesticides, has gained registration in about 120 countries for use in over 140 agricultural crops. Only few data are available on its toxicity for soil invertebrates. We therefore assessed the effects of imidacloprid on survival, weight gain, feeding rate, total protein content, glutathione S-transferase activity (GST), and digestive gland epithelial thickness in juveniles and adults of the terrestrial isopod Porcellio scaber. After two weeks of feeding on imidacloprid-dosed food, weight gain (NOEC 5 microg/g dry food) and feeding rate (NOEC 10 microg/g) in juveniles, and feeding rate (NOEC<10 microg/g) and digestive gland epithelial thickness (NOEC<10 microg/g) in adults were most affected. In juveniles induction of GST activity and increase of total protein content per wet animal weight was detected at 5 microg/g dry food, whereas in adults a reduction of GST was observed at 25 microg/g (NOEC 10 microg/g). An estimate of actual intake rates suggests that imidacloprid affects isopods at similar exposure concentrations as insects. The toxicity of imidacloprid was similar to that of the organophos...Continue Reading

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Citations

Aug 23, 2011·Ecotoxicology·Carla Filipa CalhôaSusana Loureiro
Jun 13, 2013·Ecotoxicology and Environmental Safety·M A Radwan, M S Mohamed
Nov 23, 2013·Chemosphere·Mojca Mattiazzi UšajUroš Petrovič
Aug 29, 2014·Ecotoxicology and Environmental Safety·Maria D PavlakiSusana Loureiro
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Jun 15, 2016·Environmental Toxicology and Pharmacology·Xiaohua XiaZhongjie Chang
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Dec 20, 2018·ZooKeys·Cornelis A M van GestelPrimož Idar

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