بررسی تغییرات جمعیت مگس جالیز (Dacus ciliatus Loew (Dip., Tephritidae روی خربزه در دزفول

Dacus ciliatus Loew is one of the most important pests of cucurbit crops in Khuzestan province. This pest was injured until 100% of fruits. In order to study cucurbit fly Population dynamics in a melon field at the Safiabad Agricultural Research Center, were sampled randomly. Sample units were included of 60 fruits from 30 plants were taken for each sampling date during 8 weeks. Sticky yellow traps were used to count the full insects on the feild. Results indicated that the higher population of adult flies attracted to traps was observed on 28 October with an average temperature of 27.61 0C and a relative humidity of 25%. Melon contamination with fly began in late August and lasted until the end of the season (early November). For each fruit in the whole cultivation period, 12.1± 0.18 eggs, 0.97± 0.19 first instar larvae 0.94 ± 0.14 Second instar larvae and 0.77±0.13 third instar larvae was counted. The number of generations of cucurbit crops flies during melon cultivation in Dezful was determined to be 3 generations from late August to early November.