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Voracity of the main stored-product insect pests on wheat grain

Author:
Zakladnoy, G. A.
Source:
Entomological revue 2016 v.96 no.1 pp. 12-14
ISSN:
0013-8738
Subject:
Oryzaephilus surinamensis, Rhyzopertha dominica, Sitophilus oryzae, Sitotroga cerealella, Tribolium castaneum, adults, insect pests, larvae, wheat
Abstract:
The results of an experimental study of voracity of adults and larvae of seven main stored-product insect pests are described. One adult of Sitophilus oryzae, S. granarius, Rhizopertha dominica, Tribolium castaneum, T. confusum, and Oryzaephilus surinamensis consumed 0.38, 0.48, 0.89, 0.15, 0.16, and 0.11 mg of wheat grain per day, respectively. During their development, larvae of these insects consumed 7.60, 13.77, 7.92, 3.32, 3.60, and 2.32 mg of wheat grain, respectively. One larva of Sitotroga cerealella consumed 17.46 mg of wheat grain. The coefficients of harmfulness of these species are calculated, and a method for estimating the “total infestation density” of grain is proposed.
Agid:
5200435