Effect of phenolics in maize grains of different varieties on biology of Angoumois grain moth,Sitotroga cerealella(Oliv.) (Lepidoptera: Gelechiidae)

2013 ◽  
Vol 41 (4) ◽  
pp. 636-646 ◽  
Author(s):  
S. Ahmed ◽  
U. Faridi ◽  
M. Shahid ◽  
M. Nisar
Keyword(s):  
Sitotroga Cerealella ◽  
Angoumois Grain Moth

scholarly journals Cold storage and gamma irradiation of Sitotroga cerealella Olivier eggs (Lepidoptera: Gelechiidae) in relation to the success of parasitism by Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Naglaa F. Abdel-Hameid ◽  
I. R. M. Elzoghby ◽  
A. L. Mehany ◽  
W. A. A. Sayed
Keyword(s):  
Gamma Irradiation ◽  
Cold Storage ◽  
Mass Rearing ◽  
Egg Parasitoid ◽  
Sitotroga Cerealella ◽  
Trichogramma Evanescens ◽  
Control Programs ◽  
Angoumois Grain Moth ◽  
Rearing Techniques ◽  
The Times

AbstractThe performance of parasitism by the egg parasitoid, Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) on eggs of Angoumois grain moth, Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) was investigated under cold storage and gamma irradiation treatments of the host eggs. Cold storage treatment could improve the parasitoid mass rearing techniques and reduced the costs of biological control programs, while gamma irradiation might be used as a supplementary support at the times of high demand. The suitability of the S. cerealella eggs, stored at – 20 °C for 0.5, 1, or 2 h. as a host for T. evanescens was evaluated. The sensitivity of S. cerealella eggs to gamma irradiation treatments and the acceptability of irradiated eggs for parasitism by T. evanescens females for the parental P and F1 generations were examined. The results revealed that parasitism was drastically reduced more than adult’s emergence and sex-ratio (% of females) after cold storage periods of S. cerealella eggs. Moreover, the parasitism percentages were relatively reduced to (97.1, 96.1, 93.03, and 92.7 %) after irradiating the S. cerealella eggs at 40, 60, 80, and 100 Gy, respectively than the control (97.3% emergence). The percentages of emergence and females’ percent were slightly decreased by gamma irradiation doses, while, equal preferred by the F1 generation of parasitoid that produced from irradiated S. cerealella eggs.

scholarly journals Chemical composition and toxicity of some Agro waste-derived insecticides against Angoumois grain moth, Sitotroga ceralella (Olivier) [Lepidoptera: Gelechiidae] infesting stored paddy grains

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Michael Olufemi Ashamo ◽  
Kayode David Ileke ◽  
Ayomiposi Idowu Onasile
Keyword(s):  
Chemical Composition ◽  
Adult Emergence ◽  
Adult Mortality ◽  
Agricultural Wastes ◽  
Sitotroga Cerealella ◽  
Angoumois Grain Moth ◽  
Egg Hatchability ◽  
Mortality Effect ◽  
Maize Cob ◽  
High Level

Abstract Background Agriculture being one of the major practices in the world has contributed to environmental pollution, especially in developing countries where there were no equipment to recycle the agricultural wastes. Considering the high level of infestation of paddy by Sitotroga cerealella and the high level of pollution caused by agricultural wastes, this research investigated the chemical composition and toxicity of agro wastes (rice husk, maize cob, groundnut and cowpea pods) as eco-friendly protectants of paddy against Sitotroga cerealella. Parameters assessed include adult mortality, oviposition, adult emergence and egg hatchability. Gas chromatography and mass spectrophotometry were used to isolate and characterize the active compounds present in the most effective crude extract. Results The results of the study revealed that all agricultural wastes showed high mortality effect on S. cerealella. Cowpea pod powder was the most toxic to adult paddy moth that caused 33.33%, 36.67%, 46.67%, 50% and 60% mortality of S. cerealella at concentrations 0.1 g, 0.2 g, 0.3 g, 0.4 g and 0.5 g/20 g of paddy grains after 24 h of exposure, respectively. The Cowpea pod, groundnut pod and maize cob extracts caused 100% mortality of S. cerealella at concentration 0.5 ml/20 g of paddy grains after 96 h of exposure, respectively. The lethal concentrations LC50 and LC90 of cowpea pod after 24 h were 0.16 and 0.64 ml which were the lowest of all agro waste extract tested. GC–MS analysis revealed that 19 chemical compounds were present in cowpea pod extract, 9, 12-Octadecadienoic acid (a methyl ester) has the highest percentage total of 39.57% and 4-Pentenal, 2-methylene (0.12%) has the least percentage total. Conclusion All the observations revealed that cowpea pod was the most effective. The findings also suggested that the selected agricultural wastes have a promising insecticidal potential and can be used as alternatives to synthetic chemical insecticides for the control of stored product insects.

Wheat cultivars affecting life history and digestive amylolytic activity of Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae)

2016 ◽  
Vol 106 (4) ◽  
pp. 464-473 ◽  
Author(s):  
E. Borzoui ◽  
B. Naseri
Keyword(s):  
Life History ◽  
Starch Content ◽  
Developmental Time ◽  
Soluble Starch ◽  
Fourth Instar ◽  
Amylolytic Activity ◽  
Sitotroga Cerealella ◽  
Immature Stages ◽  
Wheat Cultivars ◽  
Angoumois Grain Moth

AbstractThe life history and digestive α-amylase activity of the Angoumois grain moth, Sitotroga cerealella Olivier (Lepidoptera: Gelechiidae) were studied on six wheat cultivars (Arg, Bam, Nai 60, Pishtaz, Sepahan and Shanghai) at 25 ± 1°C, relative humidity of 65 ± 5% and a photoperiod of 16:8 (L:D) h. A delay in the developmental time of S. cerealella immature stages was detected when larvae were fed on cultivar Sepahan. The maximum survival rate of immature stages was seen on cultivar Bam (93.33 ± 2.10%), and the minimum rates were on cultivars Nai 60 (54.66 ± 2.49%) and Sepahan (49.33 ± 4.52%). The highest realized fecundity and fertility were recorded for females which came from larvae fed on cultivar Bam (93.30 ± 2.10 eggs/female and 91.90 ± 3.10%, respectively); and the lowest ones were observed for females which came from larvae fed on cultivar Sepahan (49.30 ± 4.50 eggs/female and 67.4 ± 11.1%, respectively). The heaviest male and female weights of S. cerealella were observed on cultivar Bam (2.97 ± 0.02 and 4.80 ± 0.01 mg, respectively). The highest amylolytic activity of the fourth instar was detected on cultivar Bam (0.89 ± 0.04 mg maltose min−1), which had the maximum mean hundred-wheat weight (5.92 ± 0.19 g). One α-amylase isozyme was detected in the midgut extracts from the fourth instar larvae fed on different wheat cultivars, and the highest intensity was found in larvae fed on cultivar Bam. Correlation analyses showed that very high correlations existed between the immature period, fecundity and fertility on one side and inhibition of α-amylase, soluble starch content and hundred-wheat weight on the other. According to the obtained results, cultivar Sepahan is an unfavorable host for the feeding and development of S. cerealella.

scholarly journals Screening of paddy varieties against angoumois grain moth, Sitotroga cerealella Oliv.

2019 ◽  
Vol 10 (2) ◽  
pp. 476
Author(s):  
Sandra Maria Mathew ◽  
S. Jeyarajan Nelson ◽  
R. P. Soundararajan ◽  
D. Uma ◽  
P. Jeyaprakash
Keyword(s):  
Sitotroga Cerealella ◽  
Angoumois Grain Moth

scholarly journals Pesticidal effect of different botanicals and wood ash against Angoumois grain moth Sitotroga cerealella Olivier.

2017 ◽  
Vol 52 (1) ◽  
pp. 67-72
Author(s):  
Tahmina Akter ◽  
Ruhul Amin
Keyword(s):  
Rice Variety ◽  
Wood Ash ◽  
Terminalia Arjuna ◽  
Adult Longevity ◽  
Rice Grain ◽  
Sitotroga Cerealella ◽  
Tobacco Leaf ◽  
Angoumois Grain Moth ◽  
Rice Grains ◽  
Leaf Powder

Pesticidal effects of different botanicals (like neem, Azadirachta indica; Biskataly, Polygonum hydropiper Linn. karanja, Pongamia pinnata, arjun (Terminalia arjuna ) and tobacco, Nicotina  tabacum ) and wood ash were studied for the management of Angoumois grain moth, Sitotroga cerealella (Olivier) in stored rice grain at the Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. For the studies, de-infested rice variety BR-11 was collected from farm store house. The treatments of the studies were: Neem leaf powder @ 10gm / kg of rice grains were mixed with seeds (T1); Biskatali leaf powder @ 10gm/kg of rice grains were mixed with seeds (T2); Karanja leaf powder @ 10gm / kg of rice grains were mixed with seeds (T3); Arjun leaf powder t @ 10gm / kg of rice grains were mixed with seeds (T4);  Tobacco leaf powder @ 10gm / kg of rice grains were mixed with seeds (T5); Wood ash @ 10gm / kg of rice grains were mixed with seeds (T6) and Control (T7) and experiment was laid out in a Completely Randomized Design (CRD) with four replications. In all generation (1st, 2nd and 3rd generation), the results showed that different botanicals and wood ash had pesticidal effect against angoumois grain moth. Among them tobacco leaf powder showed the highest toxic effect in case of the percent of mortality (100%), percent of adult emerged (0.00%), adult longevity (0.00) and repellency effect (75%) which closely followed by neem leaf powder (T1), whereas biskataly and karanja leaves powder showed lowest and the no repellency rate (0.00) was recorded in T3 and T6 treatment.Bangladesh J. Sci. Ind. Res. 52(1), 67-72, 2017 

Sign in / Sign up

Export Citation Format

Share Document