Abstract
The results of an experimental study of the vertical distribution of Sitophilus oryzae L. adults in a 10-m high wheat grain bulk during storage are described. At the beginning of the experiment, the model grain bulk was infested with beetles at a uniform density of 5 ind. per 1 kg of grain. After 151 and 224 days of storage, live beetles were found only in the surface grain layer down to 0.1 m deep where their densities were 693 and 3943 ind./kg, respectively. At the same time, the densities of dead beetles in the grain bulk decreased considerably with depth.
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Jain, F., Chelladurai, V., Jayas, D.S., and White, N.D.G., “Insector® System to Monitor Insect Activity and Density during Grain Storage and Fumigation,” in Proc. 9th Int. Conf. on Controlled Atmosphere and Fumigation in Stored Products, Antalya, Turkey, 15—19 Oct. 2012 (ARBER, 2009a), pp. 396–402.
Jain, F., Jayas, D.S., and White, N.D.G., “Optimal Environmental Search and Scattered Orientations during Movement of Adult Rusty Grain Beetles, Cryptolestes ferrugineus (Stephens), in Grain Bulks - Suggested Movement and Distribution Patterns,” Journal of Stored Products Research 45, 177–183 (2009b).
Loschiavo, S.R., “Laboratory Studies Device to Detect Insects in Grain, and of the Distribution of Adults of Rusty Grain Beetles, Cryptolestes ferrugineus (Coleoptera: Cucujidae), in Wheat-Filled Containers,” The Canadian Entomologist 106, 1309–1318 (1974).
Zakladnoy, G.A., Protection of Grain and Grain Products from Pests (Kolos, Moscow, 1983) [in Russian].
Zakladnoy, G.A., Doctoral Dissertation in Biology (Moscow, 1985).
Zakladnoy, G.A., Saulkin, V.I., and Ryazantseva, M.I., “Distribution of Insects in Stored Grain and Their Identification Using Traps,” in Proceedings of the All-Russian Research Institute of Grain and Grain Products, Issue 93 (Moscow, 1980), pp. 28–41 [in Russian].
Zakladnoy, G.A., Saulkin, V.I., Vasiliev, A.N., Zheltova, S.A., et al., New Methods of Grain Disinsection (Moscow, 1982) [in Russian].
Zakladnoy, G.A., Sokolov, E.A., Kogteva, E.F., and Chirkov, A.M., Guide to Stored Grain Pests and Use of ProStorfor Their Control (Moscow, 2003) [in Russian]
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Original Russian Text © G.A. Zakladnoy, 2018, published in Entomologicheskoe Obozrenie, 2018, Vol. 97, No. 1, pp. 12—15.
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Zakladnoy, G.A. Vertical Distribution of Adult Rice Weevils, Sitophilus oryzae L. (Coleoptera, Dryophthoridae), in a Stored Grain Bulk. Entmol. Rev. 98, 8–9 (2018). https://doi.org/10.1134/S0013873818010025
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DOI: https://doi.org/10.1134/S0013873818010025