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A neonicotinoid insecticide reduces fueling and delays migration in songbirds

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dc.contributor.authorEng, Margaret
dc.contributor.authorStutchbury, Bridget
dc.contributor.authorMorrissey, Christy
dc.date.accessioned2020-03-05T17:31:02Z
dc.date.available2020-03-05T17:31:02Z
dc.date.issued9/13/2019
dc.description.abstractNeonicotinoids are neurotoxic insecticides widely used as seed treatments, but little is known of their effects on migrating birds that forage in agricultural areas. We tracked the migratory movements of imidacloprid-exposed songbirds at a landscape scale using a combination of experimental dosing and automated radio telemetry. Ingestion of field-realistic quantities of imidacloprid (1.2 or 3.9 milligrams per kilogram body mass) by white-crowned sparrows (Zonotrichia leucophrys) during migratory stopover caused a rapid reduction in food consumption, mass, and fat and significantly affected their probability of departure. Birds in the high-dose treatment stayed a median of 3.5 days longer at the site of capture after exposure as compared with controls, likely to regain fuel stores or recover from intoxication. Migration delays can carry over to affect survival and reproduction; thus, these results confirm a link between sublethal pesticide exposure and adverse outcomes for migratory bird populations.en_US
dc.description.sponsorshipNSERC Discovery, Kenneth M Molson Foundation, NSERC RTI, Mitacs Accelerateen_US
dc.description.versionPeer Revieweden_US
dc.identifier.citationEng, M. L.; Stutchbury, B. J. M.; Morrissey, C. A. (2019). A neonicotinoid insecticide reduces fueling and delays migration in songbirds. Science, 365(6458), 1177-1180. DOI: 10.1126/science.aaw9419en_US
dc.identifier.doi10.1126/science.aaw9419
dc.identifier.issn0036-8075
dc.identifier.issn1095-9203
dc.identifier.pmid31515394
dc.identifier.urihttp://hdl.handle.net/10388/12692
dc.language.isoenen_US
dc.publisherAmerican Association for the Advancement of Scienceen_US
dc.subjectpesticidesen_US
dc.subjectavian migrationen_US
dc.subjectautomated telemetryen_US
dc.subjectecotoxicologyen_US
dc.titleA neonicotinoid insecticide reduces fueling and delays migration in songbirdsen_US
dc.typePreprinten_US

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