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Experimental evidence for neonicotinoid driven decline in aquatic emerging insects

There is an ongoing unprecedented loss in insects, both in terms of richness and biomass. The usage of pesticides, especially neonicotinoid insecticides, has been widely suggested to be a contributor to this decline. However, the risks of neonicotinoids to natural insect populations have remained la...

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Autores principales: Barmentlo, S. Henrik, Schrama, Maarten, de Snoo, Geert R., van Bodegom, Peter M., van Nieuwenhuijzen, André, Vijver, Martina G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8612350/
https://www.ncbi.nlm.nih.gov/pubmed/34697235
http://dx.doi.org/10.1073/pnas.2105692118
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author Barmentlo, S. Henrik
Schrama, Maarten
de Snoo, Geert R.
van Bodegom, Peter M.
van Nieuwenhuijzen, André
Vijver, Martina G.
author_facet Barmentlo, S. Henrik
Schrama, Maarten
de Snoo, Geert R.
van Bodegom, Peter M.
van Nieuwenhuijzen, André
Vijver, Martina G.
author_sort Barmentlo, S. Henrik
collection PubMed
description There is an ongoing unprecedented loss in insects, both in terms of richness and biomass. The usage of pesticides, especially neonicotinoid insecticides, has been widely suggested to be a contributor to this decline. However, the risks of neonicotinoids to natural insect populations have remained largely unknown due to a lack of field-realistic experiments. Here, we used an outdoor experiment to determine effects of field-realistic concentrations of the commonly applied neonicotinoid thiacloprid on the emergence of naturally assembled aquatic insect populations. Following application, all major orders of emerging aquatic insects (Coleoptera, Diptera, Ephemeroptera, Odonata, and Trichoptera) declined strongly in both abundance and biomass. At the highest concentration (10 µg/L), emergence of most orders was nearly absent. Diversity of the most species-rich family, Chironomidae, decreased by 50% at more commonly observed concentrations (1 µg/L) and was generally reduced to a single species at the highest concentration. Our experimental findings thereby showcase a causal link of neonicotinoids and the ongoing insect decline. Given the urgency of the insect decline, our results highlight the need to reconsider the mass usage of neonicotinoids to preserve freshwater insects as well as the life and services depending on them.
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spelling pubmed-86123502021-12-08 Experimental evidence for neonicotinoid driven decline in aquatic emerging insects Barmentlo, S. Henrik Schrama, Maarten de Snoo, Geert R. van Bodegom, Peter M. van Nieuwenhuijzen, André Vijver, Martina G. Proc Natl Acad Sci U S A Biological Sciences There is an ongoing unprecedented loss in insects, both in terms of richness and biomass. The usage of pesticides, especially neonicotinoid insecticides, has been widely suggested to be a contributor to this decline. However, the risks of neonicotinoids to natural insect populations have remained largely unknown due to a lack of field-realistic experiments. Here, we used an outdoor experiment to determine effects of field-realistic concentrations of the commonly applied neonicotinoid thiacloprid on the emergence of naturally assembled aquatic insect populations. Following application, all major orders of emerging aquatic insects (Coleoptera, Diptera, Ephemeroptera, Odonata, and Trichoptera) declined strongly in both abundance and biomass. At the highest concentration (10 µg/L), emergence of most orders was nearly absent. Diversity of the most species-rich family, Chironomidae, decreased by 50% at more commonly observed concentrations (1 µg/L) and was generally reduced to a single species at the highest concentration. Our experimental findings thereby showcase a causal link of neonicotinoids and the ongoing insect decline. Given the urgency of the insect decline, our results highlight the need to reconsider the mass usage of neonicotinoids to preserve freshwater insects as well as the life and services depending on them. National Academy of Sciences 2021-10-25 2021-11-02 /pmc/articles/PMC8612350/ /pubmed/34697235 http://dx.doi.org/10.1073/pnas.2105692118 Text en Copyright © 2021 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) .
spellingShingle Biological Sciences
Barmentlo, S. Henrik
Schrama, Maarten
de Snoo, Geert R.
van Bodegom, Peter M.
van Nieuwenhuijzen, André
Vijver, Martina G.
Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title_full Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title_fullStr Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title_full_unstemmed Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title_short Experimental evidence for neonicotinoid driven decline in aquatic emerging insects
title_sort experimental evidence for neonicotinoid driven decline in aquatic emerging insects
topic Biological Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8612350/
https://www.ncbi.nlm.nih.gov/pubmed/34697235
http://dx.doi.org/10.1073/pnas.2105692118
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