Impacts of neonicotinoid seed treatments on the wild bee community in agricultural field margins

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dc.contributor.authorMain, Anson R.en
dc.contributor.authorWebb, Elisabeth B.en
dc.contributor.authorGoyne, Keith W.en
dc.contributor.authorAbney, Roberten
dc.contributor.authorMengel, Doreenen
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.date.accessioned2021-07-20T18:48:06Zen
dc.date.available2021-07-20T18:48:06Zen
dc.date.issued2021-09-10en
dc.description.abstractWild bees support global agroecosystems via pollination of agricultural crops and maintaining diverse plant communities. However, with an increased reliance on pesticides to enhance crop production, wild bee communities may inadvertently be affected through exposure to chemical residues. Laboratory and semi-field studies have demonstrated lethal and sublethal effects of neonicotinoids on limited genera (e.g., Apis, Bombus, Megachile), yet full field studies evaluating impacts to wild bee communities remain limited. Here, we conducted a two-year field study to assess whether neonicotinoid seed treatment and presence in environmental media (e.g., soil, flowers) influenced bee nest and diet guild abundance and richness. In 2017 and 2018, we planted 23 Missouri agricultural fields to soybeans (Glycine max) using one of three seed treatments: untreated (no insecticide), treated (imidadoprid), or previously-treated (untreated, but neonicotinoid use prior to 2017). During both years, wild bees were collected in study field margins monthly (May to September) in tandem with soil and flowers from fields and field margins that were analyzed for neonicotinoid residues. Insecticide presence in soils and flowers varied over the study with neonicotinoids infrequently detected in both years within margin flowers (0%), soybean flowers (<1%), margin soils (<8%), and field soils (similar to 39%). Wild bee abundance and species richness were not significantly different among field treatments. In contrast, neonicotinoid presence in field soils was associated with significantly lower richness (ground- and aboveground-nesting, diet generalists) of wild bee guilds. Our findings support that soil remains an underexplored route of exposure and long-term persistence of neonicotinoids in field soils may lead to reduced diversity in regional bee communities. Future reduction or elimination of neonicotinoid seed treatment use on areas managed for wildlife may facilitate conservation goals to sustain viable, diverse wild bee populations. Published by Elsevier B.V.en
dc.description.notesThank you to M. Arduser, T. Christensen, O. Hannig, K. Kuechle, R. Owen, and J. Piercefield for assistance in field data collection or bee identification. We appreciate the support and involvement of MDC Area Managers, biologists, and staff. Special thanks to A. HarmonThreatt and two anonymous reviewers for their insightful comments to help strengthen the manuscript. This work was funded through a cooperative agreement with the Missouri Department of Conservation (MDC) . Partial support was also provided to KG by USDA-NIFA through Hatch funding (MO-HANR0007) and MultiState Working Group W3045 (MOMSNR0002) . The Missouri Cooperative Fish and Wildlife Research Unit is jointly sponsored by MDC, the University of Missouri, the U.S. Fish and Wildlife Service, the U.S. Geological Survey, and the Wildlife Management Institute. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.en
dc.description.sponsorshipMissouri Department of Conservation (MDC); USDA-NIFAUnited States Department of Agriculture (USDA) [MO-HANR0007]; MultiState Working Group W3045 [MOMSNR0002]; MDC; University of Missouri; U.S. Fish and Wildlife ServiceUS Fish & Wildlife Service; U.S. Geological SurveyUnited States Geological Survey; Wildlife Management Instituteen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2021.147299en
dc.identifier.eissn1879-1026en
dc.identifier.issn0048-9697en
dc.identifier.other147299en
dc.identifier.pmid33971605en
dc.identifier.urihttp://hdl.handle.net/10919/104227en
dc.identifier.volume786en
dc.language.isoenen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectAbundanceen
dc.subjectAgroecosystemsen
dc.subjectBee functional guildsen
dc.subjectNeonicotinoid insecticidesen
dc.subjectPollinatorsen
dc.subjectRichnessen
dc.titleImpacts of neonicotinoid seed treatments on the wild bee community in agricultural field marginsen
dc.title.serialScience of the Total Environmenten
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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