1135 KB27 KB199320242016Azarm, AmrollahMohammadi, HojjatollahZamanpour, Mostafaštevilka:1letnik:24str. 15-26ISSN:1318-1998COBISSID:1644021URN:URN:NBN:SI:doc-859S1PMBenPrirodoslovni muzej SlovenijeSlovensko entomološko društvo Štefana MichielijaActa entomologica slovenica (Ljubljana)codling mothsCydia pomonellaIranjabolčni zavijačiLepidopterametuljimonitoringpopulation fluctuationTortricidaeYasoujDetermination of codling moth, Cydia pomonella (Lep.: Tortricidae), generation numbers and adult population fluctuation in Yasouj through two different methods|Population fluctuation of adult codling moth was studied in Yasouj through two methods, (1) sex pheromone-baited trapping and (2) collecting of larvae and maintaining them in natural conditions, to determine its appropriate spraying time. In the first method, three generations of adults emerged from mid-April to early June (45 days), late May to mid-July (60 days) and mid-July to mid-September (60 days). Their flight peaks occurred after mid-April, after mid-June and early August. At the time of flight peak, second and third generation adult populations were equal but twice as high as first generation adult population. In the second method, three generations of adults emerged during April (25 days), early June to mid-July (45 days) and mid-July to late August (45 days). Their flight peaks occurred in mid-April, mid-June and end July. Both methods were congruent for showing population fluctuation. Flying periods of the second and third generations were equal but longer than flying period of the first generation. Flying periods in the second method were shorter than flying periods in the first method. Flight peaks of both methods coincided but with slight delay for the first method. Some of first generation larvae remained dormant for one year and emerged as adults next year which shows that some individuals were monovoltine. Spraying time for the study area can be adjusted according to the findings of this study and the type of pesticide which have to be usedSpreminjanje velikosti populacije odraslih jabolčnih zavijačev v Yasouju smo ugotavljali z dvema metodama, (1) lovom na feromonske pasti in (2) zbiranjem ličink in njihovim gojenjem v naravnih razmerah, da bi določili pravilen čas škropljenja. Po prvi metodi so se tri generacije odraslih osebkov pojavljale od srede aprila do začetka junija (45 dni), od konca maja do srede julija (60 dni) in od srede julija do srede septembra (60 dni). Viški letanja metuljev so bili po sredini aprila, po sredini junija in v začetku avgusta. V času viškov sta bili druga in tretja generacija enaki, a dvakrat večji kot prva generacija metuljev. Po drugi metodi so se tri generacije odraslih osebkov pojavljale aprila (25 dni), od začetka junija do srede julija (45 dni) in od srede julija do konca avgusta (45 dni). Njihovi viški letanja so bili sredi aprila, sredi junija in konec julija. Obe metodi sta bili primerni za spremljanje spreminjanja populacije. Obdobji letanja druge in tretje generacije sta bili enaki, a daljši od obdobja letanja prve generacije. Obdobja letanja po drugi metodi so bila krajša kot po prvi metodi. Viški letanja po obeh metodah so se ujemali, vendar z rahlim zaostankom po prvi metodi. Nekaj ličink prve generacije je ostalo dormantnih celo leto in so se kot metulji pojavile naslednje leto, kar kaže, da je nekaj osebkov monovoltinih. Čas škropljenja v območju raziskav lahko prilagodimo glede na ugotovitve te raziskave in vrste pesticida, ki ga uporabljamoTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaPrirodoslovni muzej Slovenije