ThisisfromaworkmadebyIngemarFriesin1989.
Sixty-fourhoneybeecoloniesinfectedvithVarroainsixdifferentapiarieswereexposedtosevendifferenttreatmentsinaccordancewiththetable.
IMP=IllertisserMilbenplattencontaining14,2gwaterfreeFA.20g,30g,=dosageoffreeFAappliedonfibrematerialinan85%watersolution.Intervalsindays,andnumberoftreatments.
Treatment | Numberofcolonies | Agent | Dose,grams | Intervalandnumberoftreatment | Placeofapplication | Distanceformcombs,mm |
A | 20 | IMP | 56,8 | 1×4 | Undercombs | 70 |
B | 9 | IMP | 56,8 | 4×4 | Undercombs | 70 |
C | 7 | IMP | 56,8 | 1×4 | Abovecombs | 10 |
D | 10 | IMP | 42,6 | 1×3 | Undercombs | 10 |
E | 5 | 20ml | 81,3 | 1×4 | Undercombs | 70 |
F | 5 | 30ml | 121,9 | 1×4 | Undercombs | 70 |
G | 8 | 20ml | 81,3 | 1×4 | Undercombs | 10 |
Thecoloniesweretreated,withbroodpresent,earlyinthemorninginlateAugustwithtempsvaryingfrom+14to+18C.Theresultsfromtreatmentwereestimatedbycountingthemitedownfallwithin12daysaftertreatment.12dayswereusedsincesealedbroodwillhatchwithinthatperoidandtheeffectofFAonmitesinsidethebroodcellswillbeincluded.InlateOctober,inbroodlesscondition,allcoloniesweretreatedwithPerizinandthemitedownfallcounted.Thetotalmitepopulationwasestimatedaftera95%efficiencyofPerizintreatment.
Treatment | DownfallFA | DownfallPerizin | Effect% |
A | 965.8±201,7 | 463.6±130.3 | 63.9±6.1 |
B | 596.9±111.3 | 421.2±125.6 | 61.4±6.9 |
C | 2149.1±440.9 | 217.9±57.7 | 90.2±3.0 |
D | 392.8±43.3 | 22.4±4.7 | 94.5±1.0 |
E | 364.2±190.6 | 43.2±21.1 | 84.7±5.6 |
F | 1098.0±592.0 | 11.0±4.1 | 96.6±1.6 |
G | 2028.4±491.0 | 64.1±17.4 | 96.3±1.1 |
TreatmentAandBdidnotdiffersignificantly,butbothwerelesseffectivethanallothertreatments.Nosignificantdifferenceswereseenbetweentreatingfromabove(C)orfrombelow(D),orbetweentreatingcolonieseveryday(A)oreveryfourthday(B)usingthesamedosesanddistanceinbothcomparisons.湖北天马养蜂场,加我们的微信一起学养蜂。
Asimpleanalysisshowsthatboththedosesandthedistanceofapplicationfromthecombssignificantlyinfluencedtheresults.
Possibleeffectsfromtreatmentonqueenlosseswerestudiedin91separatecoloniesthatwereonalongtimeexperimentwithFA.Inthe91colonieswherethepresenceofthequeenwasinvestigatedafter4treatmentswithIMP,5colonieshadlosttheirqueen(5,5%),probablyduetothetreatment.