蘋果綿蚜蚜小蜂重要生物學(xué)及發(fā)育始點和有效積溫研究.pdf

1、山東農(nóng)業(yè)大學(xué)碩士學(xué)位論文蘋果綿蚜蚜小蜂重要生物學(xué)及發(fā)育始點和有效積溫研究姓名：李剛申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)昆蟲與害蟲防治指導(dǎo)教師：鄭方強20090618蘋果綿蚜蚜小蜂重要生物學(xué)及發(fā)育始點和有效積溫的研究AbstractSomebasicbiologicalcharacteristics，thedevelopmentalzerosandtheeffectiveaccumulativetemperaturesoftheAphelinus

2、mali，animportantparasiticnaturalenemyofthewoollyappleaphid，Erisosmalanigerumwereresearched，TheseresearcheswilllayasolidtheoreticalfoundationforthepropagationandaugmentationoftheparasitoidThemainbiologicalcharacteristics，

3、includingparasitismrate，sexratioandeclosionrateoftheparasitoidwereinvestigatedintheappleorchardTheparasitismratepeakedat838％inSeptemberMoreoverthemeanparasitismrateoftheparasitoidremainedstableat50％orsoduringa11othersamp

4、lingperiodexceptinMayThesexratioWashigherduringtheperiodofthelastdaysofJulyandthefnstdaysofAugust，andthehighestsexratiowasabout75：1Duringtheotherperiodsthesexratiowas24：1Theeclosionratesoftheparasitoidvariedduringdiffere

5、ntmonths，wereverylowinthestartingandthelateperiodsoftheyear，oRenkeptstableatabove50％beforethemiddletendaysofSeptemberdeclinedaftermid—SeptemberandapproachedtoZeroinNovemberwiththeparasitoidenteringtheperiodofdiapauseThep

6、arasiticbehaviortheeclosionrhythmandtheeffectofspectrumandlightintensityonthephototaxisoftheparasitoidwereinvestigatedinlabTheparasiticbehaviorsoftheparasitoidmainlyincludethesuccessivesixprocesses：hostsearching，changing

7、thepositionofbodyovipositonprobing，ovipositing，ovipositionterminating，andtrimmingandrestingThelanosewaxonthebodysurfaceofwoollyappleaphidCanpromotetheparasitoidtosearchthehost，andremovingthewaxisalsoimportantstepforthepa

8、rasitoidtolayitseggTheparasitoidhadatendencytowardtheshortlightspectrums，mostlytowardthepurplewavelengthsThephototaxisoftheparasitoidWasacceleratedwiththeincreaseofthetightintensityTheeclosionoftheparasitoidpeakedat5：007

9、：00andtherhythmwasobviousTheresearchesshowedthatlightplayallimportantroleincontrollingsomebehaviorsoftheparasitoidDevelopmentaldurations，developmentalzerosandeffe_ctiveaccumulatedtemperatureoftheparasitoidwerecalculatedu