Özet:

The rate of infestation, some biological characteristics, and population fluctuation of Silba adipata McAlpine (Diptera: Lonchaeidae) in fig orchards in Aydın province were studied. The trials were conducted in Ficus carica cv. Sarılop, F.carica cv. Bursa siyahı and F.carica cv. caprificus orchards. Bait traps containing a mixture of hexanol, ammonium sulfate and fig milk (fig tree extract) were used in trials. It was determined that all districts of Aydın province were infested with S. adipata. In the years 2011, 2012 and 2013, the infestation rates in fruits of the Sarılop variety (the sum of the fruit on the tree and on the ground) were determined as 3.53%, 2.06% and 3.40 %, respectively. The rates of infestation among the furits fallen on the ground were between 20-40% in Sarılop in three study years. In Bursa siyahı, the rate of infested fruits among fallen ones was 64%. Sexual index in Sarılop orchards was found to be 0.7. The adults and eggs of the pest were seen between May-December in the orchards. The highest adult population was detected in the Sarılop orchards in July and September, and in the caprifig orchard in September and October. The most numerous eggs in a fig fruit (egg/fruit) were obtained from mammoni fruits (84 eggs), followed by the maincrop fruits (67eggs), mamme fruits (12 eggs) and profichi fruits (5 eggs), respectively. No egg was found in breba and lastcrop fruits. The maximum total number of eggs obtained during the study years was also obtained from mammoni fruits, followed by maincrop, mamme and profichi fruits. The most numerous eggs were determined in maincrops in July and September; in breba in September; in profichi in May and June, in mamme fruits in May. The larvae and pupae were developed in 8.18±1.35 days and 7.84±0.13 days, respectively.