persica Baghdadi et al 2012

Comm. Appl. Biol. Sci, Ghent University, 774, 2012 637 diets at level 1 table 2a and 2b. Longevity of larvae had maximum duration 27±0.33 days when fed by honeybee lyophilized powder and minimum 17.9± 0.3 days was recorded for B. tabaci. 25±0.27 days recorded from M. persicae. Alikhan and Wan 2004 reported 18.6 days for larval duration C. pallens feeding on B. tabaci. Food preference of 3 rd instars green lacewing larvae between live preys was investigated. Results showed 70±1.7 and 27.6±2.86 for M.persicae and B.tabaci respectively. When fertility of adults emerging from those larvae which fed on different diets was com- pared, those females who were fed on B.tabaci had a higher fertility rate, so we could con- sider, that for rearing in experimental purpose, it to be a more suitable host for lacewing larvae than other preys. This study showed, that using larvae of green lacewing C. lucasina, is a very good way to control B. tabaci, although we used laboratory conditions, but potentially, it could be used in greenhouses and even in crop fields to control this pest. Table 1a . Mean and standard error of consumption of different larval instars C.lucasina on live prey larval instar B. tabaci

M. persica

Instar1 66.2±4.78 26.2±1.24 Instar2 132±10.44 70.6±7.53 Instar3 246±5.33 185±6.94 sum of mean x±SE 444.2±6.8 281.8±5.2 Table 1b . Analysis of variance of consumption rate of different larval instar C.lucasina when were fed on live food source of variation df mean of squares F. value larval instars 2 74566.9 403.536 type of prey 1 21978.133 118.94 t.prey×l.instar 2 376.633 2.027n.s experimental error 24 184.783 Table 2a . Mean and standard error of longevity of different larval instars of C.lucasina in feeding on different diets. Longevity of different stage of C. lucasina B.tabaci M. persicae Honeybee lyophilized powder Larval Instar1 2.7±0.12 4.3±0.19 4.8±0.35 Larval Instar2 3.3±0.19 4.5±0.22 5±0.31 Larval Instar3 7± 0.31 7.2±0.37 3.1±0.24 Pupa 8.8±0.68 9±0.31 10.2±0.35 Sum of mean 17.9±0.3 25±0.27 27±0.33 Table 2b . Analysis of variance of longevity of C.lucasina Source of variation df mean of squares F value Longevity 3 91.593 227.79 Type of prey 2 28.587 71.098 Lonprey 6 3.61 8.977 Exp.error 48 0.402 Significant difference at level 1 c.v═10.89 638 Table3a . Analysis of variation of prey type on fecundity of C. lucasina Source of variation df mean of squares F value type of prey 2 1288.8 52.718 exp. error 12 195.167 Significant difference at level 1, c.v. 5.42 Table3b . Mean and standard error of deposited egg of C. lucasina in feeding on different diets. Mean of eggfemale 20 days

B. tabaci M.persicae