Individual-based modelling of the efficacy of fumigation tactics to control lesser grain borer (Rhyzopertha dominica) in stored grain

2012 ◽  
Vol 51 ◽  
pp. 23-32 ◽  
Author(s):  
Mingren Shi ◽  
Patrick J. Collins ◽  
James Ridsdill-Smith ◽  
Michael Renton
Keyword(s):  
Rhyzopertha Dominica ◽  
Stored Grain ◽  
Lesser Grain Borer

scholarly journals Toxicity and repellency effect of some indigenous plant extracts against lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae)

2016 ◽  
Vol 22 ◽  
pp. 31-39
Author(s):  
Md Arifuzzaman ◽  
Md Adnan Al Bachchu ◽  
Most Omme Kulsum ◽  
Roushan Ara
Keyword(s):  
Plant Extracts ◽  
Toxicity Test ◽  
Rhyzopertha Dominica ◽  
Impregnation Method ◽  
Stored Grain ◽  
Indigenous Plants ◽  
Lesser Grain Borer ◽  
Rhizopertha Dominica ◽  
Indigenous Plant ◽  
Insect Mortality

Context: Insect bio assay and repellency test can play a vital role in special environmental conditions.Objectives: To screen out the insecticidal potency of some plant extracts to control the adult lesser grain borer by insect bioassay and repellency tests.Materials and Methods: Toxicity test of five indigenous plant extracts with three concentrations were conducted against Rhizopertha dominica. Insect mortality was recorded at 24, 48, and 72 HAT. For residual toxicity test, insect mortality was recorded at 1, 2, 7, 15 and 21 DAT. The repellent activities were evaluated using the filter paper impregnation method and the data were counted at hourly intervals up to 6th hour. In all cases ten insects per replication were tested and each treatment was replicated thrice. The collected data were statistically analyzed.Results: Among the tested plant extracts, neem showed the highest toxic and repellent effects against the lesser grain borer. All the doses applied had direct toxicity, residual and repellency effects while 8% dose showed the highest response. The order of toxicity was found as neem > biskatali > karabi > akanda > ata. Mortality percentages were directly proportional to the time after treatment.Conclusion: This study proved that the leaf extract of indigenous plants like neem, biskatali, karabi ata and akanda can be used to protect stored grain pests.J. bio-sci. 22: 31-39, 2014

scholarly journals Efficacy Assessment of Biosynthesized Copper Oxide Nanoparticles (CuO-NPs) on Stored Grain Insects and Their Impacts on Morphological and Physiological Traits of Wheat (Triticum aestivum L.) Plant

Biology ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 233
Author(s):  
Ali A. Badawy ◽  
Nilly A. H. Abdelfattah ◽  
Salem S. Salem ◽  
Mohamed F. Awad ◽  
Amr Fouda
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Copper Oxide Nanoparticles ◽  
Rhyzopertha Dominica ◽  
Stored Grain ◽  
Stabilizing Agents ◽  
Cuo Nps ◽  
Vis Spectroscopy ◽  
Ft Ir

Herein, CuO-NPs were fabricated by harnessing metabolites of Aspergillus niger strain (G3-1) and characterized using UV–vis spectroscopy, XRD, TEM, SEM-EDX, FT-IR, and XPS. Spherical, crystallographic CuO-NPs were synthesized in sizes ranging from 14.0 to 47.4 nm, as indicated by TEM and XRD. EDX and XPS confirmed the presence of Cu and O with weight percentages of 62.96% and 22.93%, respectively, at varied bending energies. FT-IR spectra identified functional groups of metabolites that could act as reducing, capping, and stabilizing agents to the CuO-NPs. The insecticidal activity of CuO-NPs against wheat grain insects Sitophilus granarius and Rhyzopertha dominica was dose- and time-dependent. The mortality percentages due to NP treatment were 55–94.4% (S. granarius) and 70–90% (R. dominica). A botanical experiment was done in a randomized block design. Low CuO-NP concentration (50 ppm) caused significant increases in growth characteristics (shoot and root length, fresh and dry weight of shoot and root, and leaves number), photosynthetic pigments (total chlorophylls and carotenoids), and antioxidant enzymes of wheat plants. There was no significant change in carbohydrate or protein content. The use of CuO-NPs is a promising tool to control grain insects and enhance wheat growth performance.

scholarly journals Productivity, pathogenicity, host range, and spore mass-propagation of local strain of Mattesia sp. isolated from insect cadavers of certain stored grain pests in Egypt

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Ahlam Ahmed Alfazairy ◽  
Yasien Mohamed Gamal Zedan El-Abed ◽  
Hanan Mohamed Ramadan ◽  
Hedaya Hamza Karam
Keyword(s):  
Galleria Mellonella ◽  
Larval Mortality ◽  
Maximum Yield ◽  
Local Strain ◽  
Rhyzopertha Dominica ◽  
Stored Grain ◽  
Spore Yield ◽  
Long Term Storage ◽  
Spore Mass

AbstractAverage yields of Mattesia spores (spore productivity) had varied from a minimum yield (0.17 × 107 spores) for Laemophloeus turcicus adult to a maximum yield (7.46 × 107 spores) for Plodia interpunctella larva. Comparatively, the highest increase in Mattesia spore yield, recorded from P. interpunctella larva (7.46 × 107 spores) over the lowest one, estimated for L. turcicus adult (0.17 × 107 spores), was nearly 44-fold. The increase in Mattesia spore yields that calculated from the other hosts (P. interpunctella pupa or moth; Galleria mellonella larva; Rhyzopertha dominica adult; Sitophilus zeamais), over that estimated for L. turcicus adult, was less than 10-fold (6–9-fold). Based on the weight of 1 g of the insect host infected with Mattesia sp., small stored grain insect hosts (e.g. L. turcicus, S. zeamais, and R. dominica) seemed to achieve Mattesia spore yields more than the larger ones (e.g. P. interpunctella). The increase in spore yields over that used for the inoculum, based on an average of 25 P. interpunctella larvae per bioassay container, was ca. 2 to 31-fold. These results revealed that the Indianmeal moth, P. interpunctella, could serve as a potential host for mass propagating the isolated entomopathogenic protozoan, Mattesia sp. Besides Mattesia larval mortality, survivors of Mattesia infection suffered deformities and noticeable undersized pupae or adults than the control ones. Also, many copulated moths (ca.46%) were unable to become separated after copulation until they had died. Bioassay of siftings, obtained from L. turcicus-protozoan-infected stock cultures, was carried out in order to emphasize the suppressive potent role of such protozoan entomopathogens in long-term storage. With the highest tested concentration of the studied siftings (10%), mortality responses due to Mattesia infection ranged from 13 to 68% at 14–169 days post-treatment. The corresponding figures for Adelina infection were 7–42%.

Mitochondrial response of the lesser grain borer Rhyzopertha dominica (F.) to modified atmospheres

2019 ◽  
Vol 83 ◽  
pp. 338-346 ◽  
Author(s):  
Víctor A. Levy-De la Torre ◽  
Francisco J. Cinco-Moroyoqui ◽  
Alonso A. López-Zavala ◽  
Francisco J. Wong-Corral ◽  
Oliviert Martínez-Cruz
Keyword(s):  
Rhyzopertha Dominica ◽  
Lesser Grain Borer ◽  
Modified Atmospheres

scholarly journals Preliminary Study on the Differences in Hydrocarbons Between Phosphine-Susceptible and -Resistant Strains of Rhyzopertha dominica (Fabricius) and Tribolium castaneum (Herbst) Using Direct Immersion Solid-Phase Microextraction Coupled with GC-MS

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1565
Author(s):  
Ihab Alnajim ◽  
Manjree Agarwal ◽  
Tao Liu ◽  
Beibei Li ◽  
Xin Du ◽  
...  
Keyword(s):  
Cuticular Hydrocarbons ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Rhyzopertha Dominica ◽  
Gas Chromatography Mass Spectrometry ◽  
Stored Grain ◽  
Phosphine Resistance ◽  
Significant Difference ◽  
Resistant Strains ◽  
Direct Immersion

Phosphine resistance is a worldwide issue threatening the grain industry. The cuticles of insects are covered with a layer of lipids, which protect insect bodies from the harmful effects of pesticides. The main components of the cuticular lipids are hydrocarbon compounds. In this research, phosphine-resistant and -susceptible strains of two main stored-grain insects, T. castaneum and R. dominica, were tested to determine the possible role of their cuticular hydrocarbons in phosphine resistance. Direct immersion solid-phase microextraction followed by gas chromatography-mass spectrometry (GC-MS) was applied to extract and analyze the cuticular hydrocarbons. The results showed significant differences between the resistant and susceptible strains regarding the cuticular hydrocarbons that were investigated. The resistant insects of both species contained higher amounts than the susceptible insects for the majority of the hydrocarbons, sixteen from cuticular extraction and nineteen from the homogenized body extraction for T. castaneum and eighteen from cuticular extraction and twenty-one from the homogenized body extraction for R. dominica. 3-methylnonacosane and 2-methylheptacosane had the highest significant difference between the susceptible and resistant strains of T. castaneum from the cuticle and the homogenized body, respectively. Unknown5 from the cuticle and 3-methylhentriacontane from the homogenized body recorded the highest significant differences in R. dominica. The higher hydrocarbon content is a key factor in eliminating phosphine from entering resistant insect bodies, acting as a barrier between insects and the surrounding phosphine environment.

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