scholarly journals Common Medicinal Plants as Repellents against Stored Grain Insects- Sitophilus oryzae and Tribolium castaneum

2016 ◽  
Vol 09 (08) ◽  
pp. 71-77
Author(s):  
Dr. Dhaniya ◽  
Dr. Susha Dayanandan
Keyword(s):  
Medicinal Plants ◽  
Tribolium Castaneum ◽  
Sitophilus Oryzae ◽  
Stored Grain ◽  
Stored Grain Insects

Control of Main Stored-Grain Insects with New Formulations of Entomopathogenic Fungi in Diatomaceous Earth Dusts

2008 ◽  
Vol 4 (1) ◽  
Author(s):  
Yacoub Ahmad Batta
Keyword(s):  
Entomopathogenic Fungi ◽  
Diatomaceous Earth ◽  
Sitophilus Oryzae ◽  
Germination Percentage ◽  
Fungal Species ◽  
Rhyzopertha Dominica ◽  
Stored Grain ◽  
High Loss ◽  
Mortality Percentage ◽  
Stored Grain Insects

The present research is aimed at a formulation of the entomopathogenic fungi, Beauveria bassiana (Bal.) Vuillemin and Metarhizium anisopliae (Metch.) Sorokin, in two types of diatomaceous earth dusts, fossil shield and Silico-Sec, are then applied against the adults of three species of stored-grain insects: Sitophilus oryzae L., Rhyzopertha dominica Fab. and Tribolium castaneum Herbs. Effect of the treatment was assessed by comparing the mortality percentage of the adults of the three insect species exposed to the formulated fungi with that of the adults exposed to the unformulated fungi or the diatomaceous earth dusts or the undisturbed control. Results obtained from these exposures have indicated that treatment of the adults with the formulated fungi resulted in a significantly higher mean mortality percentage compared to the treatment with the unformulated fungi or the diatomaceous earth dusts or the undisturbed control. A synergistic interaction between the effect of fungal species and the diatomaceous earth dusts was shown. Viability of conidia of both fungal species in diatomaceous earth dusts was assessed by calculating the germination percentage of the conidia over time. Results indicated a small loss of mean germination percentage for formulated conidia of both fungal species versus a high loss of mean germination percentage for the unformulated conidia, thus the diatomaceous earth dusts used in the formulation of both fungi demonstrated a negligible effect on the viability of formulated conidia compared to the unformulated.

scholarly journals Preparation, Characterization and Biological Efficacy of Eucalyptus Oil Nanoemulsion against the Stored Grain Insects

2020 ◽  
pp. 41-51
Author(s):  
Tahany G. M. Mohammed ◽  
M. E. H. Nasr
Keyword(s):  
Control Strategies ◽  
Physical Stability ◽  
Sitophilus Oryzae ◽  
Contact Toxicity ◽  
Fumigant Toxicity ◽  
Stored Grain ◽  
Spontaneous Emulsification ◽  
Eucalyptus Oil ◽  
Rhizopertha Dominica ◽  
Stored Grain Insects

Nanotechnology has enormous potential for developing alternative pest control strategies and reducing the risk of insecticide molecules. The present study aimed to develop a stable nanoemulsion (NE) of eucalyptus oil (EO) by the spontaneous emulsification method and evaluate its insecticidal and repellent effect against Sitophilus oryzae (L.), Rhizopertha dominica (F.) and Tribolium-castaneum (Herbst.). The prepared nanoemulsion formulation having a small particle size 8.57 nm with polydispersity index (PDI) 0.28. The study of the stability and physicochemical properties showed that the prepared formulation had good physical stability without any change in the macroscopic parameters. In addition, results showed that theinsecticidal activity of the prepared NE was higher than the original EO against the three tested insect speciesand the mortality increased with increasing concentrations and extending of exposure time. The contact toxicity of NE film revealed that, adults of R. dominica was more susceptible to all treatments followed by S. oryzae adults, while adults of T. castaneum was the least susceptible one, however, adults of S. oryzae was more susceptible followed by T. castaneum adults while, adults of                    R. dominica was the least susceptible one according to the fumigant toxicity and repellency. Our results suggested that the prepared formulation may be used in an integrated pest managementprogramfor controlling stored grain insects.

Acaricidal and Insecticidal Activities of Essential Oils against a Stored-Food Mite and Stored-Grain Insects

2016 ◽  
Vol 79 (1) ◽  
pp. 174-178 ◽  
Author(s):  
JA-EUN SONG ◽  
JEONG-MOON KIM ◽  
NA-HYUN LEE ◽  
JI-YEON YANG ◽  
HOI-SEON LEE
Keyword(s):  
Filter Paper ◽  
Lethal Dose ◽  
Sitophilus Oryzae ◽  
Mite Species ◽  
Plant Oils ◽  
Anethum Graveolens ◽  
Stored Grain ◽  
Contact Bioassay ◽  
Stored Grain Insects ◽  
Insecticidal Activities

ABSTRACT Twenty plant-derived oils were evaluated for their acaricidal and insecticidal activities against Sitotroga cerealella, Sitophilus oryzae, Sitophilus zeamais, and Tyrophagus putrescentiae adults, by using the fumigant and filter paper diffusion methods. Responses varied with bioassay systems, insect or mite species, plant oils, and exposure time. Based on the 50% lethal dose (LD50) values against S. oryzae and S. zeamais in the fumigant bioassay, Anethum graveolens oil (4.12 and 1.12 μg/cm3, respectively) induced the highest mortality, followed by Achillea millefolium (21.92 and 14.91 μg/cm3) and Eucalyptus dives (28.02 and 24.02 μg/cm3) oils, respectively. The most toxic oil based on the 50% lethal concentration values against T. putrescentiae was E. dives (3.13 μg/cm3), followed by Melaleuca leucadendron (3.93 μg/cm3) and Leptospermum pertersonii (4.41 μg/cm3). Neroli birgard oil (1.70 μg/cm3) was the most toxic based on the LD50 values against S. cerealella, followed by Citrus aurantium (1.80 μg/cm3) and Artemisia vulgaris (1.81 μg/cm3). The insecticidal and acaricidal activities of the plant oils in the filter paper diffusion bioassay were similar to those in the fumigant bioassay. In comparison, A. millefolium, A. graveolens, and E. dives oils were more effective against S. oryzae and S. zeamais in the fumigant bioassay than in the contact bioassay. These results indicate that the insecticidal activity of the three plant oils against S. oryzae and S. zeamais may be due to their fumigant action. Acaricidal activities of the A. millefolium, A. graveolens, and E. dives oils against T. putrescentiae were 2.62, 1.11, and 122 times higher than that of benzyl benzoate in the contact bioassay. These results indicate that A. millefolium, A. graveolens, and E. dives oils have potential for development as agents to control stored-grain insects and mites.

scholarly journals Phytochemical Action of White Mulberry Extracts against Three Important Stored Grain Pests

2017 ◽  
Vol 9 (4) ◽  
pp. 359-366
Author(s):  
Z. R. Sabuj ◽  
A. Khatun ◽  
M. Abdullah ◽  
D. M. Badruddoza ◽  
H. Ali ◽  
...  
Keyword(s):  
Petroleum Ether ◽  
Tribolium Castaneum ◽  
Sitophilus Oryzae ◽  
Stem Bark ◽  
Callosobruchus Chinensis ◽  
Ether Extract ◽  
Stored Grain ◽  
Chcl3 Extract ◽  
Stored Grain Pests ◽  
White Mulberry

Petroleum ether (Pet. ether), CHCl3 and CH3OH extracts of white mulberry were subjected to dose-mortality tests against Callosobruchus chinensis (L.), Sitophilus oryzae (L.) and Tribolium castaneum (Hbst.). Pet. ether extract of  leaves against C. chinensis, S. oryzae and T. castaneum provided LD50 9.16, 5.06, 3.79, 2.81, 2.06, 1.55, 1.32, 1.38 mg/g; 17.6, 12.9, 11.3, 82.4, 83.5, 9.47, 8.73, 8.61 mg/g and 0.93, 0.826, 0.691, 0.623, 0.567, 0.532, 0.525 mg/cm2 after 0.5, 6, 12, 24, 36, 48, 60, 72 h of exposures respectively. Against C. chinensis Pet. ether extract of root and stem bark gave LD50 28.3, 20.7, 18.4, 16.9, 14.4, 13.6, 13.3, 13.3 mg/g and 86.3, 228.9, 177, 109, 61.0, 21.8, 0.999, 15 mg/g after 0.5, 6, 12, 24, 36, 48, 60, 72 h of exposures respectively. CH3OH extracts of leaves offered LD50 21.5, 20.4, 17, 16.2, 15.6, 14.7 mg/g against C. chinensis; 5.4, 14.7, 13.7, 11, 10.9, 9.46, 9.10 mg/g against S. oryzae; and 3.804, 3.429, 3.284, 2.736, 2.441, 2.311, 2.264 mg/cm2 against T. castaneum after 6, 12, 24, 36, 48, 60, 72 h of exposures respectively. Against S. oryzae CH3OH extract of root and CHCl3 of stem bark gave LD50 19.5, 19.1, 17.5, 16.7, 16.2, 15.8, 15.9 mg/g and 9.77, 9.44, 7.71, 6.56, 5.94, 5.39, 5.4 mg/g after 6, 12, 24, 36, 48, 60, 72 h of exposures respectively. However, CHCl3 extract of leaves and root didn’t show mortality.

Toxic and repellent action of sugarcane bagasse-based lignin against some stored grain insect pests

1970 ◽  
Vol 25 ◽  
pp. 27-30 ◽  
Author(s):  
LA Muslima Khanam ◽  
D Talukder ◽  
MA Hye
Keyword(s):  
Tribolium Castaneum ◽  
Sugarcane Bagasse ◽  
Laboratory Experiments ◽  
Callosobruchus Maculatus ◽  
Insect Pests ◽  
Sitophilus Oryzae ◽  
Repellent Activity ◽  
Stored Grain ◽  
Time Intervals ◽  
Class V

Laboratory experiments were carried out to investigate the efficacy of sugarcane bagasse-based lignin against four stored grain insect pests viz., Tribolium castaneum, Tribolium confusum, Sitophilus oryzae and Callosobruchus maculatus. Mortality was assessed after 24, 48 and 72 h of treatment and LD50 values were calculated at the respective time intervals. It was observed that T. castaneum is more susceptible to the lignin than the other test insects. Repellent activity of the product was conducted for T. castaneum and T. confusum. All the concentrations of the product were found to be repellent to both the insect species. Strong repellent activity was observed at concentrations of 471.57 and 628.76 µg.cm-2 to T. confusum showing the repellency of class V activity. Key words: Bagasse-based lignin, toxicity, repellency, Tribolium castaneum, T. confusum, Sitophilus oryzae, Callosobruchus maculatus Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.27-30

Knockdown-Mortality Responses of Six Stored-Product Beetle Species on Different Surfaces Treated With Thiamethoxam, Using a Standardized Lethality Index

2020 ◽  
Author(s):  
Fotoula K Tsaganou ◽  
Thomas N Vassilakos ◽  
Christos G Athanassiou
Keyword(s):  
Sitophilus Oryzae ◽  
Galvanized Steel ◽  
Cryptolestes Ferrugineus ◽  
Oryzaephilus Surinamensis ◽  
Target Species ◽  
Stored Grain ◽  
Plastic Surfaces ◽  
Adult Exposure ◽  
Stored Grain Insects ◽  
Coleoptera Tenebrionidae

Abstract Bioassays were conducted to evaluate the effectiveness of thiamethoxam in different surfaces, against six stored-grain insects, Sitophilus granarius (L.) (Coleoptera: Curculionidae), Sitophilus oryzae (L.) (Coleoptera: Curculionidae), Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae), Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae), and Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae). Six different surfaces (concrete, plywood, galvanized steel, linen, plastic, and ceramic tile) treated with thiamethoxam at 0.05 and 0.1 mg/cm2 were used as substrate for adult exposure. Knockdown was recorded after 1, 3, and 7 d of exposure to the treated surface, in order to calculate a Standardized Lethality Index (SLI). Knockdown counts were ranked from ‘0’ to ‘4’, with ‘0’ representing adult insects ‘moved generally’ and ‘4’ representing dead insects. Based on the results, insect knockdown seems leading to mortality than to recovery and the SLI ranking of the target species according to their susceptibility to thiamethoxam showed that S. granarius being more susceptible and decreasing susceptibility in an order of S. oryzae > T. castaneum ≥ O. surinamenis ≥ C. ferrugineus ≥ T. confusum. In general, among the surfaces, thiamethoxam efficacy was lower on linen, wooden, and concrete surfaces, as compared to metallic and plastic surfaces. Nevertheless, at the end of 7-d exposure, all surfaces equally affected thiamethoxam toxicity.

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