Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/33795
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dc.contributor.authorHäfliger, Patrick.-
dc.contributor.authorEllison, Carol.-
dc.contributor.authorHinz, Hariet L.-
dc.date.accessioned2019-08-16T18:54:09Z-
dc.date.available2019-08-16T18:54:09Z-
dc.date.issued2019-08-
dc.identifier.govdocERDC/EL CR-19-2-
dc.identifier.urihttps://hdl.handle.net/11681/33795-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/33795-
dc.descriptionContract Report-
dc.description.abstractThe noctuid moths Archanara geminipuncta and A. neurica were selected as the most promising candidates for biological control of common reed. Complete development was possible on the native North American subspecies P. australis americanus. However, open-field oviposition tests showed a strong preference of female moths for both European and introduced P. australis. An egg overwintering experiment also showed that neither of the two moth species will survive at latitudes which correspond to regions where the subspecies P. australis berlandieri is occurring. The authors contributed to a petition for field release, which will be submitted by North American partners during 2018. The semi-aquatic weevil Bagous nodulosus is one of the most promising potential agents for biological control of flowering rush. The authors established a rearing colony and began sequential no-choice oviposition tests, which confirmed the narrow host range of the weevil. In a preliminary impact experiment, a reduction of 33% above-ground biomass was found due to adult feeding. The authors also began work with the agromyzid fly Phytoliriomyza ornata and the white smut Doassansia niesslii. The teleomorphic state of this pathogen is able to infect flowering rush under water, which will be advantageous for controlling completely submerged populations of the plant.en_US
dc.description.sponsorshipAquatic Plant Control Research Program (U.S.)en_US
dc.description.tableofcontentsAbstract ..................................................................................................................................................... ii Figures and Tables ....................................................................................................................................... iv Preface........................................................................................................................................................ v 1 Biological Control of Common Reed, Phragmites australis ....................................................................... 1 1.1 Background ....................................................................................................................... 1 1.2 Rearing and shipments of A. geminipuncta and A. neurica ...................................................... 3 1.3 Egg overwintering experiment with A. geminipuncta and A. neurica .......................................... 4 2 Investigation into Biological Control of Flowering Rush, Butomus umbellatus ............................................. 6 2.1 Introduction ....................................................................................................................... 6 2.2 Surveys and collections ....................................................................................................... 7 2.3 Bagous nodulosus Gyllenhal (Coleoptera, Curculionidae) ....................................................... 8 2.3.1 Biology .................................................................................................................................... 8 2.3.2 Rearing .................................................................................................................................... 9 2.3.3 Host-specificity tests ............................................................................................................... 10 2.3.4 Impact experiment .................................................................................................................. 13 2.4 Bagous validus Rosenhauer (Coleoptera, Curculionidae) ...................................................... 15 2.4.1 Field collections and rearing attempts ....................................................................................... 15 2.4.2 Observations at field sites ........................................................................................................ 16 2.4.3 Discussion ............................................................................................................................. 17 2.5 Phytoliriomyza ornata (Meigen) (Diptera, Agromyzidae) ........................................................ 17 2.6 Hydrellia concolor (Stenhammer) (Diptera, Ephydridae) ........................................................ 19 2.7 Doassansia niesslii De Toni (Basidiomycota) ....................................................................... 20 2.7.1 Field work .............................................................................................................................. 21 2.7.2 General isolation and inoculation methodology .......................................................................... 22 2.7.3 Butomus umbellatus biotype susceptibility to D. niesslii ex Bremen, Germany ............................... 23 2.7.4 Host-specificity testing ............................................................................................................ 24 2.7.5 Discussions and conclusions .................................................................................................... 24 References ............................................................................................................................................... 26 Report Documentation Page-
dc.format.extent37 pages / 3.108 Mb-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherEnvironmental Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesContract Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/EL CR-19-2-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectAquatic plants--Biological controlen_US
dc.subjectPhragmites australisen_US
dc.subjectButomus umbellatusen_US
dc.subjectEnvironmental managementen_US
dc.titleInvestigations into biological control for common reed and flowering rushen_US
dc.typeReporten_US
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