Abstract
Predatory potential of Chrysoperla carnea (Stephens) was studied on different larval instars of Phyllocnistis citrella (i.e. second, third and mixture of all larval instars) under laboratory conditions (26± 2oC, 65±5% R.H, 16:8 L: D photo period). Results revealed that feeding and rearing on different larval instars of P. citrella affected predator biology with different degrees. It had no significant effect on incubation period of C. carnea eggs females, pupation period, adult longevity and pre-and post - oviposition periods. On the other hand, it had significant effect on C. carnea larval period and its survival, female fecundity and eggs fertility. In general, third instar larvae of P. citrella was the most preferred prey for C. carnea. The results illustrate the potential importance of prey resources (life stage) on C. carnea population growth and indicate that C. carnea has considerable potential for the biological control of P. citrella.
Highlights
The citrus leafminer (CLM), Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) originated from South East Asia and has become a global pest of citrus, in many parts of the world. (Heppner and Dixon, 1995; Pena et al, 1996; Legaspi et al, 1999; Diez et al, 2006)
C. carnea feeding on different larval instars of P. citrella was not significant
Larval and pupal period The results indicated that larval developmental period of C. carnea feeding on different larval instars of P. citrella was significantly different
Summary
Effect of different larval instars of Phyllocnistis citrella Stainton on some biological aspects of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) under laboratory conditions. Plant Protection Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
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