Document Type

Article

Publication Version

Version of Record

Publication Date

4-2015

Departmental Paper Identifier

NRM-139

Keywords

Asclepias, Danaus plexippus, neonicotinoid, non-target, seed treatment

Abstract

Monarch butterflies (Danaus plexippus) frequently consume milkweed in and near agroecosystems and consequently may be exposed to pesticides like neonicotinoids. We conducted a dose response study to determine lethal and sublethal doses of clothianidin using a 36-h exposure scenario. We then quantified clothianidin levels found in milkweed leaves adjacent to maize fields. Toxicity assays revealed LC10, LC50, and LC90 values of 7.72, 15.63, and 30.70 ppb, respectively. Sublethal effects (larval size) were observed at 1 ppb. Contaminated milkweed plants had an average of 1.14 ±0.10 ppb clothianidin, with a maximum of 4 ppb in a single plant. This research suggests that clothianidin could function as a stressor to monarch populations.

Publication Title

The Science of Nature

Volume

102

Pages

4

Format

application/pdf

Language

en

DOI of Published Version

10.1007/s00114-015-1270-y

Publisher

Springer-Verlag

Rights

Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted within the U.S.

Comments

This work was published in The Science of Nature 102:19, DOI: 10.1007/s00114-015-1270-y

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