Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/6249
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dc.contributor.authorGrodowitz, Michael Jayen_US
dc.contributor.authorCofrancesco, Alfred F., Jr.en_US
dc.contributor.authorFreedman, Jan E.en_US
dc.contributor.authorCenter, Ted D.en_US
dc.creatorUnited States. Agricultural Research Serviceen_US
dc.creatorAquatic Plant Control Research Program (U.S.)en_US
dc.creatorU.S. Army Engineer Waterways Experiment Stationen_US
dc.date.accessioned2016-03-23T19:47:31Zen_US
dc.date.available2016-03-23T19:47:31Zen_US
dc.date.issued1997-09en_US
dc.identifier.govdocMiscellaneous Paper A-97-5en_US
dc.identifier.urihttp://hdl.handle.net/11681/6249en_US
dc.descriptionMiscellaneous Paperen_US
dc.description.abstractThe Australian leaf-mining fly, Hydrellia balciunasi, was first released as a biological control agent for the management of the submersed aquatic plant Hydrilla verticillata in August 1989 in southern Florida. Since then, 284,684 individuals have been released at seven Florida and four Texas sites. Despite this effort, populations have persisted at just two Texas sites: Sheldon Reservoir near Houston and Lake Raven in Huntsville State Park. Hydrellia balciunasi levels have remained relatively low at these sites, averaging, at best, less than 1,000 immatures/kilogram wet plant weight All other collections were substantially lower. Reasons for poor establishment are unknown but probably relate to a complex of factors, including competition with another introduced leaf-mining species, parasitism by native wasps, poor host quality, genetic differences between Australian and United States hydrilla resulting in mismatched physiological strains of agent and host plant, and possibly inbreeding depression in laboratory colonies used for releases.en_US
dc.description.sponsorshipAquatic Plant Control Research Program (U.S.)en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineersen_US
dc.format.extent15 pages/1.07 MBen_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherU.S. Army Engineer Waterways Experiment Stationen_US
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1043950en_US
dc.relation.ispartofseriesMiscellaneous Paper (Aquatic Plant Control Research Program (U.S.)) ; no.Miscellaneous Paper A-97-5en_US
dc.rightsApproved for public release; distribution is unlimiteden_US
dc.sourceThis Digital Resource was created from scans of the Print Resourceen_US
dc.subjectAquatic plantsen_US
dc.subjectInsect releasesen_US
dc.subjectAquatic weedsen_US
dc.subjectInsectsen_US
dc.subjectClassical biological controlen_US
dc.subjectBiocontrolen_US
dc.subjectSubmersed weedsen_US
dc.subjectAquatic Plant Control Research Program (U.S.)en_US
dc.titleRelease and establishment of Hydrellia balciunasi (Diptera: Ephydridae) for the biological control of the submersed aquatic plant Hydrilla verticillata (Hydrocharitaceae) in the United Statesen_US
dc.typeReporten_US
Appears in Collections:Miscellaneous Paper

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