Neonicotinoid mixture alters trophic interactions in a freshwater aquatic invertebrate community

0573593 - BC 2024 RIV NL eng J - Journal Article
Duchet, Claire - Hou, F. - Sinclair, C. A. - Tian, Z. - Kraft, A. - Kolář, Vojtěch - Kolodziej, E. P. - McIntyre, J. K. - Stark, J. D.
Neonicotinoid mixture alters trophic interactions in a freshwater aquatic invertebrate community.
Science of the Total Environment. Roč. 897, NOV 01 (2023), č. článku 165419. ISSN 0048-9697. E-ISSN 1879-1026
Grant - others:GA ČR(CZ) GA20-16111S
Institutional support: RVO:60077344
Keywords : neonicotinoid insecticides * mixture * aquatic invertebrates
OECD category: Ecology
Impact factor: 9.8, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0048969723040421/pdfft?md5=1fd30357fccafe86e1a1021f8e616397&pid=1-s2.0-S0048969723040421-main.pdf

Neonicotinoids are increasingly and widely used systemic insecticides in agriculture, residential applications, and elsewhere. These pesticides can sometimes occur in small water bodies in exceptionally high concentrations, leading to downstream non-target aquatic toxicity. Although insects appear to be the most sensitive group to neonicotinoids, other aquatic invertebrates may also be affected. Most existing studies focus on single-insecticide exposure and very little is known concerning the impact of neonicotinoid mixtures on aquatic invertebrates at the community level. To address this data gap and explore community-level effects, we performed an outdoor mesocosm experiment that tested the effect of a mixture of three common neonicotinoids (formulated imidacloprid, clothianidin and thiamethoxam) on an aquatic invertebrate community. Exposure to the neonicotinoid mixture induced a top-down cascading effect on insect predators and zooplankton, ultimately increasing phytoplankton. Our results highlight complexities of mixture toxicity occurring in the environment that may be underestimated with traditional mono-specific toxicological approaches.
Permanent Link: https://hdl.handle.net/11104/0349852