بررسي آزمايشگاهي بيولوژي سوسك برگخوار نارون

On The Biology of Elm Leaf Beetle, Xanthogaleruca luteola (Col.: Chrysomelidae)in Laboratory Conditions

The elm leaf beetle is one of the important pests of elm trees. This insect has three instars. Under laboratory condition (25±1 ° c, 60±5 RH and 14:10 L:D) means of incubation period, developmental time of 1st 2nd and 3rd larval instars, and total larval duration are 5.23 ± 0.05, 4.34±0.19, 4.37±0.01 and 13.49 ± 1.56 days, respectively. Means of prepupal and pupal periods are 2.06± 0.03 and 4.71±0.03 days, respectively. Means of preoviposition and oviposition period, and fecundity rate in mated and virgin females are 7.62±0.4 and 8.9±0.72, 13A2±2.27 and 10.45±1.25 days. and 174.3±48.3 and 1 13.1±24.1 eggs, respectively. Mating did not have significant effect the preoviposition duration in mated female, but was effective on the length of oviposition period and fecundity rate. The female longevity in paired and single rearing were 25.68±3.2 and 24.2±1.58 days respectively. Mean of daily feeding in larval instars are 7.56± 0.41, 18.78±3.5 and 89.11±7.03mm^2 of elm leaf and for male and female adults are 60.84±6.3 and 95.92±15.16 mm^2 respectively.