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Phenology and Dispersal of the Wheat Stem Sawfly (Hymenoptera: Cephidae) Into Winter Wheat Fields in Nebraska

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dc.contributor.authorMcCullough, Christopher T.en
dc.contributor.authorHein, Gary L.en
dc.contributor.authorBradshaw, Jeffrey D.en
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2020-12-16T13:29:40Zen
dc.date.available2020-12-16T13:29:40Zen
dc.date.issued2020-08en
dc.description.abstractHistorically, the wheat stem sawfly, Cephus cinctus Norton was a pest in spring wheat-growing regions of the northern Great Plains. However, in the 1980s, it was found infesting winter wheat fields in Montana. Infestations were first detected in western Nebraska in the 1990s, and have since spread throughout the Nebraska Panhandle. Larval damage occurs from stem-mining, but stem girdling that results in lodged stems that are not harvested results in the greatest yield losses.The biology and phenology of the wheat stem sawfly are well described in the northern portion of its range, but they are lacking in Colorado, southeast Wyoming, and Nebraska. In this study, the phenology and dispersal of the wheat stem sawfly in Nebraska winter wheat fields is described using sweep net and larval sampling. During this 2-yr study, adult activity began on May 23 and ended on June 21. Adult sex ratios were 2.32 males per female in 2014 and 0.46 males per female in 2015. Both sexes demonstrated an edge effect within the wheat fields, with greater densities near the field edge.The edge effect was stronger for male wheat stem sawfly than females. Wheat stem sawfly larval density also had an edge effect, regardless of the density of female wheat stem sawfly present. This information will be useful for developing management plans for the wheat stem sawfly in Nebraska and neighboring regions.en
dc.description.notesWe thank Susan, Rick, Marissa, Tevyn, Julie, Jeanna, Andrew, and Sini for their help in setting up the sampling sites and collecting wheat stems. We also thank our grower cooperators (Chris, Bob, and Don) for allowing us to use their fields for the study. This material is based upon work supported by the Nebraska Wheat Board, under award number 11968: Monitoring the Pest Status of the Wheat Stem Sawfly in Western Nebraska through Novel Detection Methods and Development of a Screening Protocol for Wheat Resistance. We thank the two anonymous reviewers for their feedback that improved the manuscript.en
dc.description.sponsorshipNebraska Wheat Board [11968]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1093/jee/toaa093en
dc.identifier.eissn1938-291Xen
dc.identifier.issn0022-0493en
dc.identifier.issue4en
dc.identifier.pmid32449775en
dc.identifier.urihttp://hdl.handle.net/10919/101502en
dc.identifier.volume113en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectecologyen
dc.subjectpest managementen
dc.subjectmovementen
dc.subjectNebraskaen
dc.subjectwheaten
dc.titlePhenology and Dispersal of the Wheat Stem Sawfly (Hymenoptera: Cephidae) Into Winter Wheat Fields in Nebraskaen
dc.title.serialJournal of Economic Entomologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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