Surveying effect kind of food on Biological parameters on Chrysoperla carnea (Neuroptera: Chrysopidae) under laboratory Conditions

Mahmoud Jokar,Mehdi Zarabi

doi:10.21608/eajbsa.2012.14913

Mahmoud Jokar, Mehdi Zarabi

Open Access

https://doi.org/10.21608/eajbsa.2012.14913

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Abstract

Chrysoperla carnea (steph.) is a major, cosmopolitan predator of some whitefly and Aphid. This research was evaluated relative consumption of three diets and effects of prey kinds on developmental times, mortality percentage of larvae and pupae, consumption rate, longevity, fecundity, fertility, and sex ratio on C.carnea. All larvae stages and adults were reared on the different diets: 3 rd nymphal stages Shizaphis graminum, and Bemisia tabaci (Biotype B), or a semi artificial diet (consist of honey, yeast, essential amino acid, and Distilled water) (10%, 15%, 25%, 2.5%, and 47.5%). All experiments were conducted at 25±5 0 C, 60±5% RH, and photoperiod of 16:8 (L:D). Larval stages consumed 192.1±2.57 (no.) nymph Shizaphis graminum, and 479.7±4.08 nymph Bemisia tabaci in which results show significant difference between hosts consumed by larvae .There were significant differences between rate of oviposition, larvae longevity 12.29±0.81, 14.02±0.9 and 10.07±0.3 day ,fertility ,and sex ratio on different diets (female: male when larvae fed on age of nymph Shizaphis graminum ,Bemisia tabaci and artificial diet was 53:47, 52:48 and 57:43). Considering above parameters, artificial diet can be a best choice for mass rearing C. carnea.

Highlights

Many biological characteristics, including multivoltinism, broad host-range, ability to migrate, high reproductive rate, tolerance for high temperatures, ability to vector a variety of devastating plant viruses, and a propensity to develop resistance to a wide class of insecticides underlie its pest potential and have contributed to the difficulty of developing robust and sustainable management systems (Naranjo,2001)
Our results show that feeding is influenced by increasing age of larvae, increasing feeding rate, which agrees with the results of Burke and Martin (1954), and Chakraborty (2009) who studied number of six species aphids consumed during larval stages C. carnea which showed increasing trend of the larval feeding
This current result is compared with relative consumption and flections immature weights which proved immature stages of green lacewings have higher consumption rate on whitefly between live diet

Summary

Introduction

(Hem. Aleyrodidae) is tiny, sap-sucking insect that attacks wide range of hosts. The most important whiteflies species in flower and vegetable greenhouses is Bemisia tabaci (Bellows et al, 1994). Many biological characteristics, including multivoltinism, broad host-range, ability to migrate, high reproductive rate, tolerance for high temperatures, ability to vector a variety of devastating plant viruses, and a propensity to develop resistance to a wide class of insecticides underlie its pest potential and have contributed to the difficulty of developing robust and sustainable management systems (Naranjo,2001). Schizaphis graminum (Rondani) are distributed throughout the world. They are not usually considered a major turf grass pest, they have been known to cause extensive damage to bluegrasses, fescues, and perennial ryegrasses.

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