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MAZINAIGANPAGE12INVASIVTribesbattleinvasiOdanahWis.Thedegradationofnativeplantcommunitiesandwildlifehabitatbyinvasivespeciesisagrowingproblem.GLIFWChasdevelopedaneffectiveinva-sivespeciesprogramthatincorporateseducationinventorycontrolandcooperationtomanageinvasivespecies.Educationaleffortsinformthepublicaboutthethreatsposedbyinvasivespeciesandthesimplestepsneededtolimittheirspreadandpreventnewintroductions.GLIFWCprovidesinformationonlifehistoriesidentificationimpactsandcontroloptionsforseveralspeciesofspecialconcernviaitswebsiteathttpinvasives.glifwc.org.Regularinventoriesforbothaquaticandterrestrialinvasivespeciesprovidedataforplanningandprioritizingmanagementactivities.Integratedpestmanage-mentstressesinvasiveplantsusingmultiplemethodstoincreasethelikelihoodofsuccessfulcontrol.GLIFWCcrewsusechemicalandbiologicalcontrolsaloneandincombinationtoachieveeffectivecontrolofpurpleloosestrifeaninvasiveplantthatthreatenswetlandhabitatsthroughoutthecededterritories.Becauseinvasivespeciesdonotrecognizelandownershipboundariesandthechallengesofinvasivespeciesmanagementaretoogreatforanyoneagencytomanagealonecoordinationwithcooperatingstatefederalandtriballandmanagersaswellasnon-governmentalorganizationsandprivatelandownersisessentialtoachievesuc-cessfulmanagement.GLIFWCparticipatesinseveralcooperativeeffortstoreducetheimpactsofinvasivespecies.TheNorthwoodsCooperativeWeedManagementAreaNCWMAwasestablishedtohelpfacilitatecooperationandcoordinationofregionalmanagementactivities.ParticipantsintheNCWMAincludeGLIFWCandseveralstatefederaltribalandprivatelandownersintheregion.Poolingresourcesandworkingtogetheracrossjurisdictionalboundariesismoreefficientandeffectiveforcontrollinginvasivespecies.GLIFWChelpsfacilitateinter-agencycoordinationbycompilingandsharingregionalinvasivespeciesdataviaitswebsiteathttpmaps.glifwc.org.GLIFWCtargetseducationcontrolandcooperationtomanageinvasivespeciesBySueEricksonStaffWriterThebattleagainsttheinvasivesealam-preyinLakeSuperiortakesplaceannuallyinstreamsfromSkaneeMichigantoAmniconFallsWisconsin.GLIFWCsGreatLakesSectioninpartnershipwiththeUSFishandWildlifeServiceBadRiverNaturalResourcesDepartmentandtheKeweenawBayNaturalResourcesDepartmentassessessevenstreamsinanefforttocontroltheevasivesealampreys.Sealampreysbegintheirlifecycleinaclearcleanstreameachasoneofthousandsofeggslaidintogravelnestsonthestreambottom.Herelittlelampreys-orlarvae-hatchdrifttobackwaterareasinthestreamandburrowintothestreambottom.Larvaeharm-lesslyfilterwaterforfoodandgrow.Oncethelarvaegrowtohalfafootlongorsotheytransformfromaharmlessfilterfeederintoaparasitewitharaspingtonguesurroundedbyrowsofsharpteethseephotototheright.TheparasiticsealampreyscanonlyfeedonfishandthatisaproblemParasiticsealampreysgrowfromsixinchestonearlytwofeetlongorfourtimestheiroriginalsizeineighteenmonths.Inthistimetheykillnearlyfortypoundsoffishbyattachingtothemandsuckingouttheirbodyfluidsatruevampireofthefishworld.IntheproductiveAtlanticOceantheiroriginalhometheireffectisminimalbutinthelessproductivewatersofLakeSuperiortheireffectcanbedevastatingiftheyareleftuncontrolled.ThatiswherethepartnershipcoordinatedthroughtheGreatLakesFisheryCommissionGLFCcomesintoplay.ThemosteffectivecontrolcomesintheformofachemicallampricidewhichisappliedtostreamsbytheGLFCcontrolagentstokilllarvalsealampreys.Howeverlampricideisnot100effectivesoadditionalcontrolstrategiesarebeingexamined.TheseincludedownstreamtrappingwheresealampreysarecapturedastheytransformanddriftdownthestreamtoLakeSuperiorseeupperphotonestdestructionwheresealampreysarephysicallyremovedfromtheirnestsandthenestsaredestroyedandadultremovalwheresealampreysareremovedastheymigratebackupthestreamstospawn.Inadditiontoremovingadultsealampreyssomearemarkedandreleasedforamark-recapturepopulationestimate.Thisestimateisusedasameasureoftheeffec-tivenessofthecontrolprogramandthedamagetothefisherythatcanbeattributedtosealampreys.Ifthecontrolprogramiseffectivethenumbersofadultsealampreyshouldremainbelow56000duringthepastfiveyearstheaveragenumberofadultspawningsealampreyswas43400.GLIFWCperformsannualsurveysofcededterritorylakescheckingforthepresenceofaquaticinvasivespeciessuchazebramusselsspinywatereasandEurasianwatermilfoil.WhensamplingthelocationismarkedbyGPSandnoted.Latersamplesareshippedtoalaboratoryforidenticationofinvasivespeciesinthesample.AboveSamQuagonamemberofGLIFWCsaquaticinvasivespeciescrewpreparestodropaveligernetcheckingforthepresenceofzebramusselveligers.PhotobyDaraOlsonGLIFWCpartnersonsealampreycontrolAfterice-outafykenetwassetintheLittleCarpRivernearBaragaMichiganwiththeopeningfacingupstreamtocapturelarvalandtransformedsealampreysastheydrifteddowntherivertoLakeSuperior.About1200sealampreyswerecapturedin2012.PhotoM.MattesByBillMattesGLIFWCGreatLakesSectionLeaderThemouthofaparasiticsealampreyhasaraspingtonguesurroundedbyrowsofteethwhichareusedtoattachtoashandgougeaholethroughitseshsothattheparasitecanfeedontheshsbodyfluids.PhotoB.MattesAdditionalinformationoninvasivespeciescanbefoundathttpinvasives.glifwc.org.