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Effect of five diatomaceous earth formulations against Tribofium castaneum （Coleoptera： Tenebrionidae）, Oryzaephflus surinamensis （Coleoptera： Silvanidae） and rhyzopertha dominica （Coleoptera： Bostrychidae）

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Insect Science 2007年第5期14卷 359-365页

作者： MASUMEH ZIAEE ADEL KHASHAVEH Department of Zoology Young Researcher Club of Urmia Islamic Azad University Urmia Department of Entomology Agricultural Faculty Urmia University Urmia Iran

Laboratory bioassays were conducted to determine the effect of food source on the survival of Tribolium castaneum Herbst, Oryzaephilus surinamensis L. and rhyzopertha dominica F., after exposure to five diatomaceous earth （DE） formulations： Protect-It, Insecto, Perma-GuardTM, Dryacide and SilicoSec. Adults of these species were exposed to DEs at the rate of 0.5 mg/cm^2 for 1 day on filter paper inside plastic Petri dishes. After exposure, the initial mortality was counted and live individuals of the three species were held for a week in glass vials containing 50 mg wheat flour, rice and whole wheat, respectively. In the second experiment, after 1 day exposure to DEs, beetles were transferred to Petri dishes without food and held for a week to determine if the presence of food source would decrease the mortality of beetles. Experiments were carried out at 27℃ and 55% RH in the dark. The initial mortality in both of the experiments reached 100% for the three species exposed to Protect-It and in the case ofR. dominica and O. surinamensis exposed to Dryacide. In contrast, low level of mortality （〈 10%） was observed for T. castaneum exposed to Perma-GuardTM and Insecto. The mortality after the post-treatment period on food was decreased for the three species exposed to Perma-GuardTM and in the case of T. castaneum and R. dominica exposed to Insecto and SilicoSec. Adults of O. surinamensis were the most susceptible followed by R. dominica and 100% adult mortality was obtained, whereas T. castaneum were the least susceptible beetles to DEs. Protect-It and Dryacide were the most efficient DE formulations and can be used effectively in a stored grain integrated pest management program.

关键词： diatomaceous earth initial mortality food delayed mortality Oryzaephilus surinamensis rhyzopertha dominica Tribolium castaneum

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Insecticidal efficacy of three vegetable oils as post-harvest grain protectants of stored wheat against rhyzopertha dominica （F.）（Coleoptera： Bostrychidae）

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Insect Science 2007年第2期14卷 145-150页

作者： AMIN NIKPAY Department of Entomology College of Agriculture Urmia University Urmia Iran

The lesser grain borer, rhyzopertha dominica is a major insect pests of stored grain in the tropics. Vegetable oils （chamomile, sweet almond and coconut） at 2.5, 3.5, 5.0, 7.0 and 10.0 mL/kg were tested against rhyzopertha dominica （F.） in wheat grain. All bioassays were conductr, d at 30℃ and 65% ＋ 2% RH. Treatments with vegetable oils at high dose （10.0 mL/kg） achieved over 95% control within 24 h of exposure to freshly treated grain, There was little difference between the three oils in their effect. Persistence of oils in grains was tested at short-term storage intervals （48, 72 and 96 h） and intermediate-term intervals （10, 20 and 30 days） after treatments. The activity of all products decreased with storage period. Seed viability was reduced by the high dose rate （10.0 mL/kg） of oil treatments. The potential use of vegetable oils as supplementary or alternative grain protectants against insect damage in traditional grain storage in developing countries is discussed.

关键词： rhyzopertha dominica seed viability traditional grain storage tropics,vegetable oils

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Influence of growing location and cultivar on rhyzopertha dominica （Coleoptera： Bostrichidae） and Sitophilus oryzae （Coleoptera： Curculionidae） infestation of rough rice

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Insect Science 2007年第3期14卷 231-239页

作者： FRANK H. ARTHUR RUSTY C. BAUTISTA TERRENCE J. SIEBENMORGEN USDA-ARS Grain Marketing and Production Research Center Manhattan Kansas Department of Food Science University of Arkansas Fayetteville Arkansas USA

Long-grain rice cultivars Cocodrie, Wells, and XP 723 grown in three locations （Hazen, MO; Essex and Newport, AR, USA）, and medium-grain rice cultivars Bengal and XP 713 grown in two locations （Jonesboro and Lodge Corner, AR, USA）, were harvested and assayed for susceptibility to rhyzopertha dominica （F.）（Coleoptera： Bostrichidae）, the lesser grain borer, and Sitophilus oryzae （L.）（Coleoptera： Curculionidae）, the rice weevil, on rice held at 27℃, 57% and 75% relative humidity （RH）. Separate samples from the same harvest lots were also analyzed for the physical characteristics of brown rice yield, percentage whole kernels and kernel thickness. Progeny production and feeding damage of R. dominica were significantly different among long-grain cultivars within two of the three locations （P 〈 0.05）, but not for location or RH （P ≥ 0.05）, while progeny production of S. oryzae was different among cultivars, location, and RH （P 〈 0.05）. On medium-grain rice, both cultivar and location were significant for progeny production of R. dominica, but not RH, while cultivar and RH were significant for progeny production of S. oryzae, but not location. On both rice types, feeding damage of R. dominica followed the same trends and was always strongly positively correlated with progeny production （P 〈 0.05）, but for S. oryzae there were several instances in which progeny production was not correlated with feeding damage （P ≥ 0.05）. Physical characteristics of both rice types were statistically significant （P 〈 0.01） but actual numerical differences were extremely small, and were generally not correlated with progeny production of either species. Results indicate that the location in which a particular rice cultivar is grown, along with its characteristics, could affect susceptibility of the rice to R. dominica and S. oryzae.

关键词： rough rice cultivars stored-product insects rhyzopertha dominica Sitophilus oryzae

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Evaluation of the Insecticidal Activity of the Aerial Part of Pseudocytisus integrifofius （Salisb） Rehder on Grain Borer, rhyzopertha dominica Fab, （Bostrychidae） and Wheat Weevil, Sitophilus granarius Linn, （Curculionidae）

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Journal of Life Sciences 2013年第7期7卷 700-704页

作者： Kassemi Naima Khelil Mohamed Anouar Bendimerad Nassima Research Laboratory Valuation of Human Actions for Environmental Protection and Enforcement in Public Health Department ofBiology and Environment Faculty of Science University Abou Bakr BelkaM Tlemcen 13000 Algeria Natural Products Research Laboratory Faculty of Science University Abou Bakr Belka~d Tlemeen 13000 Algeria

This study aims to evaluate the potentialities of Pseudocytisus integrifolius （Salisb） Rehder （Brassicaceae） as a botanical insecticide for the protection of stored wheat against two pests of stored grain. The essential oil of Pseudoeytisus integrifolius was tested at different doses on adults of rhyzopertha dominica Fab. （Bostrychidae） and Sitophilus granarius Linn. （Curculionidae）, at a temperature of 28 ~C and a relative humidity of 75%. This oil has insecticidal activity and gives, for the studied adults, a very significant reduction. The essential oil extracted from Pseudocytisus integrifolius is toxic on rhyzopertha dominica with LDs0 = 2.61 ~tL/30g grain and LDs0 = 3.99 ~L/30g grain for Sitophilus granarius, the chemical composition analysis shows the richness of the essential oil compounds known for their insecticidal properties as dimethyl disulfide （DMDS） and dimethyl trisulfide explains the results.

关键词： Plant protection insecticidal activity rhyzopertha dominica Sitophilus granarius Pseudocytisus integrifolius DMDS.

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