Cargando…
Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees
In cases of acute intoxication, honeybees often lay in front of their hives for several days, exposed to sunlight and weather, before a beekeeper can take a sample. Beekeepers send samples to analytical laboratories, but sometimes no residues can be detected. Temperature and sun light could influenc...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5524747/ https://www.ncbi.nlm.nih.gov/pubmed/28740208 http://dx.doi.org/10.1038/s41598-017-06259-z |
_version_ | 1783252512384483328 |
---|---|
author | Schott, Matthias Bischoff, Gabriela Eichner, Gerrit Vilcinskas, Andreas Büchler, Ralph Meixner, Marina Doris Brandt, Annely |
author_facet | Schott, Matthias Bischoff, Gabriela Eichner, Gerrit Vilcinskas, Andreas Büchler, Ralph Meixner, Marina Doris Brandt, Annely |
author_sort | Schott, Matthias |
collection | PubMed |
description | In cases of acute intoxication, honeybees often lay in front of their hives for several days, exposed to sunlight and weather, before a beekeeper can take a sample. Beekeepers send samples to analytical laboratories, but sometimes no residues can be detected. Temperature and sun light could influence the decrease of pesticides in bee samples and thereby residues left for analysis. Moreover, samples are usually sent via normal postal services without cooling. We investigated the temporal dynamics of whole-body residues of imidacloprid in live or dead honeybees following a single-meal dietary exposure of 41 ng/bee under various environmental conditions, such as freezing, exposure to UV light or transfer of individuals through the mail system. Immobile, “dead” looking honeybees recovered from paralysis after 48 hours. The decrease of residues in living but paralysed bees was stopped by freezing (= killing). UV light significantly reduced residues, but the mode of transport did not affect residue levels. Group feeding increased the variance of residues, which is relevant for acute oral toxicity tests. In conclusion, elapsed time after poisoning is key for detection of neonicotinoids. Freezing before mailing significantly reduced the decrease of imidacloprid residues and may increase the accuracy of laboratory analysis for pesticides. |
format | Online Article Text |
id | pubmed-5524747 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55247472017-07-26 Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees Schott, Matthias Bischoff, Gabriela Eichner, Gerrit Vilcinskas, Andreas Büchler, Ralph Meixner, Marina Doris Brandt, Annely Sci Rep Article In cases of acute intoxication, honeybees often lay in front of their hives for several days, exposed to sunlight and weather, before a beekeeper can take a sample. Beekeepers send samples to analytical laboratories, but sometimes no residues can be detected. Temperature and sun light could influence the decrease of pesticides in bee samples and thereby residues left for analysis. Moreover, samples are usually sent via normal postal services without cooling. We investigated the temporal dynamics of whole-body residues of imidacloprid in live or dead honeybees following a single-meal dietary exposure of 41 ng/bee under various environmental conditions, such as freezing, exposure to UV light or transfer of individuals through the mail system. Immobile, “dead” looking honeybees recovered from paralysis after 48 hours. The decrease of residues in living but paralysed bees was stopped by freezing (= killing). UV light significantly reduced residues, but the mode of transport did not affect residue levels. Group feeding increased the variance of residues, which is relevant for acute oral toxicity tests. In conclusion, elapsed time after poisoning is key for detection of neonicotinoids. Freezing before mailing significantly reduced the decrease of imidacloprid residues and may increase the accuracy of laboratory analysis for pesticides. Nature Publishing Group UK 2017-07-24 /pmc/articles/PMC5524747/ /pubmed/28740208 http://dx.doi.org/10.1038/s41598-017-06259-z Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Schott, Matthias Bischoff, Gabriela Eichner, Gerrit Vilcinskas, Andreas Büchler, Ralph Meixner, Marina Doris Brandt, Annely Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title | Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title_full | Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title_fullStr | Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title_full_unstemmed | Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title_short | Temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
title_sort | temporal dynamics of whole body residues of the neonicotinoid insecticide imidacloprid in live or dead honeybees |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5524747/ https://www.ncbi.nlm.nih.gov/pubmed/28740208 http://dx.doi.org/10.1038/s41598-017-06259-z |
work_keys_str_mv | AT schottmatthias temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT bischoffgabriela temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT eichnergerrit temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT vilcinskasandreas temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT buchlerralph temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT meixnermarinadoris temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees AT brandtannely temporaldynamicsofwholebodyresiduesoftheneonicotinoidinsecticideimidaclopridinliveordeadhoneybees |