در شرايط آزمايشگايه CHRYSOPERLA CARNEASTEPH. )NEUR. CHRYSOPIDAE( تاثير تغذيه از گونه هاي مختلف شته در نشوونما و باروري بالتوري سبز

Effects of Feeding on Three Species of Aphids by Green Lacewing Chrysoperla carnea Steph. (Neur., Chrysopidae) on itʹs Development and Fertility under Laboratory Conditions

The effects of feeding on aphids by green lacewing (GLW) on its fertility and the length of different immature stages were studied by using three different aphid species, namely rosy apple aphids (Dysaphis plantaginea Pass.), green peach aphid (Myzus persicae), and locust aphid (Aphis cracivora). Adult green lacewings were collected from the field in Khalatpushan Research Station and fed on 10% sucrose solution. By collecting of green lacewing eggs, one generation of GLW was reared on green apple aphid. Eggs from their offspring were used in the experiments. The lacewing larvae were reared in common ice-cups at 25± 1°C and 75± 5 R.H. in an incubator. Emerged adults were fed on an artificial diet containing sugar, water and yeast extracts (1:I :I by weight) during ovipostuon period.Differences between each of the larval instars and among prey species and also their intraction were significant (p=1%). Duration of larval and pupal stages was the longest in rosy apple aphid feeders while that of the locust aphid feerders was the lowest. Also the fertility of three mentioned dietary groups was significantly different (p= I%) and the highest fertility resulted in feeding on the green peach aphid. It was concluded that a suitable prey may increase the developmental rate and / or fertility of a predator. Results indicated that favorable prey decreases developmental time of predator and increases adult fertility as well as its prey consumpion rate.