Abstract

The common green lacewing, Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) is best-known as biocontrol agent. The suitability diet was important in mass-rearing and releasing field. C.carnea has a serious role at IPM cultures apposite of aphid and whitefly pest. For this purpose, Schizaphis graminum (Rondani) (Hemiptera: Aphididae), Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) biotype-B 3 rd nymphs stage and Semi artificial diet as prey for Life table parameters was evaluated. All experiments were conducted at 25 ± 5 0 C, 60± 5% RH and photoperiod of 16:8 (L:D).This study, the collected data was analyzed by using Jack Knife model and SAS (9.1) soft ware and experimental design was formatted Completely Randomized Design (CRD) and comparison among means followed by Tukey’s HSD post hoc test. The highest Lx (number of individuals alive between age x and x+1) and the lowest dx (numbers dying during the age interval x) were 0.99 and 0.005 (%) that belonged semi artificial diet. Reproductive and stable population parameters such as Net Fertility rate, Net reproductive rate (R0), Gross reproductive rate (GRR), Intrinsic of increase (rm), Mean generation time (Tc) and Doubling time (DT) in aphid, whitefly and semi artificial diets were 244.9±4.1, 170.2±3.4, 364.6±2; 175.43±4.33, 156±5.4, 267±4.8; 0.143±0.005, 0.124±0.004, 0.185±0.002; 34.93±0.47, 38±0.74, 29.79±0.57 and 4.83±0.08, 5.58±0.06 and 3.74±0.05, respectively. According to these results, semi artificial diet was appropriate diet. Keyword: Chrysoperla carnea, life table parameters, Schizaphis graminum, Bemisia tabaci, Semi artificial diet.

Highlights

  • The greenbug is thought to be palearctic in origin and is found in North, Central and South America, Europe, Africa, the Middle East and Asia (Blackman and Eastop, 2000)

  • Our results showed that semi artificial diet was appropriate diet for development of C. carnea, whereas 3rd instar B. tabaci was not (Zhang, 2010).The survival of C. carnea immature obtained of this study (0.92 % on aphid and 0.86 % on whitefly) was comparable to 78% on A. craccivora at 25 0C and 82.8% at 270C on A. gossypii Glover (Zhang et al, 2010; Lee et al 2000)

  • Our data showed that C. carnea larvae that fed on 3rd instar of B. tabaci reared on tomato 28% of pupae was abnormal and died before reaching the adult stage but different of many author such as Legaspi, Nordlund, and Legaspi, 1996 reported that C. rufilabris larvae feeding on B. tabaci reared on poinsettia and lima bean lived only to the third instar and died before reaching the pupal stage; larvae provided whitefly from cucumbers and cantaloupes reached the adult stage

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Summary

Introduction

The greenbug is thought to be palearctic in origin and is found in North, Central and South America, Europe, Africa, the Middle East and Asia (Blackman and Eastop, 2000). Bemisia rarely reaches outbreak population levels in natural environments or in agricultural situations where no insecticides are applied In these situations, natural biological control keeps Bemisia below economically injurious levels. Eretmocerus species cause mortality to whiteflies by host-feeding, in addition to parasitism. Chrysoperla carnea (Stephens) is an important predator in agriculture The value of this predator as a biological control agent arises from its widespread occurrence and broad range of prey and from the fact that each of its three larval stadia are voracious polyphagous feeders, capable of consuming their own body mass in prey each day. El-Serafi (2000) effect of four aphid species on Certain Biological characteristics and life table parameters of C. carnea and Chrysopa septempunctata (Wesmael) studied under laboratory Conditions. Atlihan et al, (2004) reported that the more aphids (Hyalopterus pruni Geoffroy) consumed by C. carnea immature stages the higher the R0 and rm of the resulting adult females

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