Biological parameters and feeding efficiency of Chrysoperla Carneastephens (Neuroptera: Chrysopidae) feed on Citrus mealy bug Planococcus Citri (Risso) (Hemiptera: Pseudococcidae) under controlled conditions (original) (raw)
Related papers
Chrysoperla carnea is a voracious predator. It is currently massreared and released for biological control programs. This study was aimed at finding out the effect of different diets on biological characteristics of adult predator, and to introduce a better and cheaper artificial diet for its mass-rearing. In order to obtain a pure and physiologically homogenous population, the predator reared for seven successive generations in laboratory conditions. The effect of six different diets [a mixture of 30% concentrations of glucose, fructose and sucrose (1: 1: 1), glucose, fructose, sucrose plus extract of Sitotroga cerealella eggs (1: 1), glucose, fructose, sucrose plus extract of Anagasta kuehniella eggs (1: 1), a mixture of honey, yeast and distilled water (1: 1: 1), honey, yeast plus extract of S. cerealella eggs (1: 1: 1) and honey, yeast plus extract of A. kuehniella eggs (1: 1: 1)] was studied on biological parameters (Preoviposition, oviposition and post-oviposition period, longevity of males and females, fecundity, egg hatchability and eggs remained in the ovary of females after death) of seventh generation. Experiments were conducted under laboratory conditions (25 ± 2 ºC, 60 ± 10% RH and 16L: 8Dh) with four replications and five observations. Results revealed that the mixture of honey, yeast and extract of A. kuehniella eggs (1: 1: 1), influenced the biological traits of the predator more effectively than all other diets. The considering average longevity, oviposition period and fecundity of female (37.73 ± 0.59, 28.57 ± 1.09 days, 795.0 ± 23.05 eggs, respectively), and egg hatchability (84.98 ± 0.71 %) compared to those of other diet treatments. Minimum pre-oviposition period (6.66 ± 0.49 days) was also found in adults fed by this diet.
Different host consumption by Chrysoperla carnea (Green lacewing) under laboratory conditions
2020
The study was carried out on different hosts at IPM laboratory Tandojam during 2018-2019. The duration of various life stages i.e., eggs, larvae and pupae on aphid, eggs of Angoumois grain moth and mealy bug were observed. The fecundity female, longevity of female were recorded on various hosts. The predatory behaviour of larvae of Chrysoperla Carnea was recorded daily by offering them a known number of aphids, eggs of Angoumois grain moth and mealy bug. The increase in the weight of larvae of C. carnea after consumption of food was daily recorded in 3 instar. The mean larval emergence from the eggs was observed as 16.4±1.60, 16.4±1.50 and 16.2±1.28 on Angoumois grain moth, cotton aphid and mealy bug respectively. The pupal period was 112.6±14 on Angoumois grain moth, cotton aphid and mealy bug respectively. The fecundity of female on three hosts comes out to be 1490.4±40.78, 1594.6±53.28, 1402.6±42.81 on Angoumois grain moth, cotton aphid and mealy bug respectively. The weight reco...
Journal of Scientific Agriculture
Chrysoperla carnea (Neuroptera: Chrysopidae) is considered as a cosmopolitan polyphagous generalist predator. Chrysoperla carnea can be used in biological control programs. The biological parameters of Chrysoperla carnea were studied to check the effect different diets under laboratory conditions. The results indicate that preoviposition, oviposition and post oviposition periods were 8.2±1.25, 30.6±1.72 and 9.4±1.02 days, respectively. The highest mortalities were occurred reared at Water+ Sugar+ Yeast+ Evion diets while no mortality was observed at H2O + Sugar +Yeast + Honey. The female longevity was 51.2 ± 2.18 days. The fecundity of female was 301.31 eggs per female with 10.36 eggs per day per single female on artificial diet, H2O + Sugar +Yeast + Honey. The study revealed that H2O + Sugar +Yeast + Honey was showed highest survival and fecundity while Water+ Sugar+ Yeast+ Evion least one.
Journal of entomology and zoology studies, 2016
Studies were conducted to find out the effects of different diets (Factitious + Artificial B) on the survival of C. carnea and to determine the impact of these diets on the reproductive potential and longevity of the adult female. The 1st instar larvae of C. carnea. were released into the factitious/artificial diets place in Petri dishes kept at room temperature ranging from 25-30 Ċ. Five different foods viz eggs of sitrotoga cerealella, artificial diet A, B and chicken liver were provided to the larvae of C. carnea. Maximum larval duration (24.9 days) in artificial diet A, followed by artificial diet B (23.9 days) and chicken liver (23.2 days) was recorded whereas minimum larval duration was recorded in the mix diet of factitious + artificial diet B but statistically all the diets were at par. The percent hatchability was high (86.5%) in mix diet of factitious + artificial B while minimum hatchability 75% and 75.5% was observed in artificial diet A and chicken liver respectively wi...
Development and Survival of Chrysoperla carnea on Two Different Preys
In this study, development periods and survivals of Chrysoperla carnea larvae fed on Aphis fabae and Aspidiotus nerii were investigated in climate cabinets with 26±0.0 °C temperature, 60±1 % humidity and 16: 8 hours light-dark period conditions. Results were statistically evaluated by SPSS 21.0, JMP 8.0 and Curve Expert Pro 1.6.8 package programs. As a result of the study, average periods of egg, 1st instar, 2nd instar, 3rd instar, pupa and total development of C. carnea fed on A. fabae and A. nerii were 3.00-3.00, 2.95-4.77, 2.80-3.77, 4.47-5.36, 6.53-7.10 and 19.62-23.40 days, respectively. Results of the statistical analysis showed that there were significant differences among all biological periods except egg period of C. carnea. Weibull distribution was fitted to survival rate of development periods of both C. carnea populations which was developed on two preys. Survival curves was fitted to Holling’s type III life curves for both populations because of the high mortality at the development periods. Parameters of Weibull distribution equation were calculated as c = 0.55, 0.55; b = 64.18, 29.91 for both populations which were used as prey of A. fabae and A. nerii, respectively.
Journal of entomology and zoology studies, 2017
The present study was aimed to find out the effect of different diets on some biological parameters of the adult predator, Chrysoperla carnea and to introduce an economic artificial diet for its mass-rearing. The C. carnea was reared for four successive generations in laboratory conditions on baker's yeast, honey, and sucrose (YHS) (2: 1: 1). The effect of seven different diets including VAYH, AK + HY, WMHY, WMH, YS + SC, YVYH, and YMH was studied on some biological parameters of the fifth generation. All experiments were done under 25 ± 10C, 65±5% RH and 16:8 h (L:D) conditions. Data were analyzed using a completely randomized design (CRD) with 15 replicates. Results revealed that the YVYH diet influenced the biological traits of the predator more positively. The mean of female longevity, male longevity, oviposition period, post oviposition period and fecundity calculated 43.53, 34.86, 26.26, 10.46 days and 618.07 (eggs), respectively.
A Study on effects of different hosts on biology of Chrysoperla carnea (Stephens) was carried out under laboratory conditions at 26±2°C and 65±5% R. H. indicated that the incubation period of eggs of C. carnea females feeding on different hosts as larvae was significantly different from each other. The biology of C. carnea was completed in 26 days on A. craccivora followed by A. gossypii (31 days) and Corcyra cephalonica (45 days). A single larva of C. carnea consumed A. gossypii and 97.33 eggs of Corcyra cephalonica followed by A. gossypii (80.00±2.65 nymphs/adults) and A. craccivora (64.33±0.67 nymphs/adults) per day. However, the all three larval instars of C. carnea consumed 369.00±6.11 eggs of C. cephalonica followed by A. gossypii (277.67±4.37 nymphs/adults) and A. craccivora (206.67±1.86 nymphs/adults) during whole larval period.
Economic rearing of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) in insectary
Pakistan Journal of Agricultural Research, 2013
Cost analysis is considered as a valuable tool in monitoring the past decisions and demonstrating the worth of the system. The goal of a mass production programme is to produce the maximum number of quality insects with minimum labour and cost. The maintenance cost of 100 Chrysoperla carnea adults was Rs. 192.38 per month, which included the labour cost of Rs. 152.38 and diet cost of Rs. 40. Approximately 4000 eggs per month were obtained from the C. carnea adult culture and the cost per egg was Rs. 0.04. This study also revealed that the diet consumption of 100 C. carnea larvae was 3.617g of Sitotroga cerealella eggs and 1.793g of Phenacoccus solenopsis crawlers. Adult emergence rate was significantly higher when provided with S. cerealella eggs, which was more economical than that of P. solenopsis crawlers. For efficient and quality production of C. carnea in laboratory using available and inexpensive equipment to produce the healthy surplus of this predator for experiment and sma...
Biologia, 2019
The ladybird Hyperaspis polita (Coleoptera: Coccinellidae) occurs in the coastal areas of East Mediterranean and dry lands in southwest Asia. It is one of the important predatory coccinellids in southern Iran including Khuzestan Province. In this study, we examined life history traits and life table parameters of H. polita fed on the important citrus pest Nipaecoccus viridis (Pseudococcidae) in the laboratory, using the age-stage, two-sex life table. Experiments were performed under controlled conditions (25 and 30 ± 1°C, 65 ± 5% RH and 14:10 h, L: D). Total preadult developmental period was significantly shorter at 30 (30.5 d (days) males, 30.1 d females) compared to 25°C (40.0 d males, 40.4 d females). The oviposition period was not significantly different at both examined temperatures. However, the mean female fecundity for the total life span ranged from 180 to 368 eggs at 25 and 30°C, respectively. The values for the intrinsic rate of increase (r = 0.089 d −1), finite rate of increase (λ = 1.093 d −1), and net reproductive rate (R 0 = 102.6) were higher at 30°C. On the other hand, the mean generation time (T) was shorter for the cohort reared at 30 (51.9 d) than at 25°C (86.2 d). When literature on H. polita is considered, we suggest N. viridis as suitable host species for efficient mass-rearing of H. polita in the insectary in Khuzestan.
Larvae of the common green lacewing, Chrysoperla carnea (Stephens) (Neuroptera :Chrysopidae) were fed with different densities of Hyalopterus pruni (Geoffer) (Homoptera: Aphididae) in Petri dishes under laboratory conditions. Functional response, developmental time, mortality rate and fecundity of the predator were measured. Treatments were carried out at 25±1C, 65±5% RH and a 16L:8D photoperiod in a controlled temperature cabinet. Prey was given at densities of 5, 10, 20, 40, 80, 160 and 250 aphids per larva per day and the number of consumed prey, developmental time and mortality rate of the predator were recorded daily. Larvae of C. carnea responded to increasing prey densities with increasing food consumption and older larval stages displayed a higher rate of predation than younger ones. The behaviour of each of the three larval stages matched Holling’s type II functional response. Larvae were able to complete their development in each of the seven prey densities, although increased prey densities reduced developmental time and mortality rate. Increased prey consumption in immature stages resulted in a higher net reproduction rate (R0) and the intrinsic rate of increase (rm) of adult females.