Effects of Insect Density, Trap Depth, and Attractants on the Capture of Tribolium castaneum (Coleoptera: Tenebrionidae) and Cryptolestes ferrugineus (Coleoptera: Cucujidae) in Stored Wheat

1986 ◽  
Vol 79 (4) ◽  
pp. 1111-1117 ◽  
Author(s):  
N. D. G. White ◽  
S. R. Loschiavo
Keyword(s):  
Tribolium Castaneum ◽  
Trap Depth ◽  
Cryptolestes Ferrugineus ◽  
Stored Wheat ◽  
Insect Density ◽  
Coleoptera Tenebrionidae

Temperature Gradient on Tribolium castaneum (Coleoptera: Tenebrionidae) Adult Dispersal in Stored Wheat

1998 ◽  
Vol 27 (1) ◽  
pp. 123-129 ◽  
Author(s):  
David W. Hagstrum ◽  
Paul W. Flinn ◽  
Jerry J. Gaffney
Keyword(s):  
Temperature Gradient ◽  
Tribolium Castaneum ◽  
Stored Wheat ◽  
Adult Dispersal ◽  
Coleoptera Tenebrionidae

scholarly journals Toxic and Repellent Characteristics of Some Plant Extracts used against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) Improve the Grain Quality of Stored Wheat

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Bilal Atta ◽  
Muhammad Rizwan ◽  
Arshed Makhdoom Sabir ◽  
Muhammad Dildar Gogi ◽  
Muhammad Sabar ◽  
...  
Keyword(s):  
Tribolium Castaneum ◽  
Plant Extracts ◽  
Grain Quality ◽  
Stored Wheat ◽  
Coleoptera Tenebrionidae

scholarly journals Intra- and interspecific interactions among Tribolium castaneum and Cryptolestes ferrugineus in stored wheat at different insect densities

2004 ◽  
Vol 84 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Raj B. Hulasare ◽  
Noel D.G. White ◽  
Digvir S. Jayas ◽  
Colin J. Demianyk
Keyword(s):  
Moisture Content ◽  
Tribolium Castaneum ◽  
Interspecific Interactions ◽  
Adult Population ◽  
Single Species ◽  
Cryptolestes Ferrugineus ◽  
Stored Grain ◽  
Hard Red Spring Wheat ◽  
Species Combination ◽  
Insect Density

Summary Cryptolestes ferrugineus and Tribolium castaneum are important economical pests of stored grain in Canada. Insects were reared separately or together on hard red spring wheat at three insect densities representing 1000, 500, and 250 adults per kilogram of wheat for single species and twice that of single densities for mixed species, in the laboratory (30°C, 70% RH). The experiment was conducted on dry (12% moisture content [MC], wet basis) and damp wheat (15% MC, wet basis). Adults were sampled every 2 weeks over a 10-week period. Sifted wheat was incubated at 30°C, 70% RH for 4 weeks to observe the number of adults emerging from immatures present under the seed coat of the wheat germ. All experiments were replicated four times. Initial insect densities, moisture content, and species combination had significant effects on the resulting adult population. Adult numbers for both species were higher on 15% MC wheat. In 12% MC wheat, T. castaneum numbers were higher than C. ferrugineus numbers when reared separately whereas this was reversed in 15% MC grain. Cryptolestes ferrugineus populations were significantly higher when reared with T. castaneum than when reared as a single species on 12% MC grain. The trend was reversed in 15% MC grain. At both grain moistures, T. castaneum numbers were higher as an isolated species compared to when reared with C. ferrugineus. The study suggested that T. castaneum populations were inhibited in the presence of C. ferrugineus. High insect density often accentuated these effects.

Evaluation of Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) excreta on ochratoxin production in stored wheat

1995 ◽  
Vol 31 (2) ◽  
pp. 151-155 ◽  
Author(s):  
G. Blank ◽  
N. Goswami ◽  
F. Madrid ◽  
R.R. Marquardt ◽  
A.A. Frohlich
Keyword(s):  
Tribolium Castaneum ◽  
Stored Wheat ◽  
Coleoptera Tenebrionidae

Laboratory studies on dispersion behaviour of adult beetles in grain. III.—Tribolium castaneum (Hbst.) (Coleoptera, Tenebrionidae) and Cryptolestes ferrugineus (Steph.) (Coleoptera, Cucujidae)

1963 ◽  
Vol 54 (2) ◽  
pp. 297-306 ◽  
Author(s):  
Gordon Surtees
Keyword(s):  
Moisture Content ◽  
Thin Plate ◽  
Tribolium Castaneum ◽  
Locomotory Activity ◽  
Cryptolestes Ferrugineus ◽  
Laboratory Studies ◽  
Temperature Range ◽  
Cent Moisture ◽  
Vertical Dispersion ◽  
Coleoptera Tenebrionidae

The dispersion behaviour of Tribolium castaneum (Hbst.) and Cryptolestes ferrugineus (Steph.) was studied under controlled laboratory conditions. The effect of density, temperature and moisture content of grain on surface numbers was studied using groups of insects initially placed centrally in jars containing 500 g. wheat and vertical dispersion was studied by observing groups of insects in a thin plate of grain held vertically between two glass sheets. The underlying behaviour of group dispersion was studied, using isolated individuals. Over the range of conditions used (15–35°C, and 9–17 per cent. moisture content), 14–49 per cent. of groups of Tribolium and 0·2–4·0 per cent. of Cryptolestes appeared on the surface. Surface numbers in both species were depressed at each end of the temperature range. In the middle of the temperature range, more individuals of Tribolium were found on the surface in grain at 17 per cent. moisture content than at 9 per cent., the reverse being found with Cryptolestes.Analyses of locomotory activity in Tribolium showed that in all conditions females moved around less than males. For both sexes, activity was relatively depressed in the driest grain and at the lowest temperatures. Change in position within the grain was almost totally absent at 35°C. although locomotory activity remained relatively high. In Cryptolestes, locomotory activity was likewise depressed at the lowest temperature but both sexes moved around apparently at random in grain at 14 per cent. moisture and 30°C. In grain at 9 per cent. moisture, nearly all individuals became inactive within 24 hours. These results are discussed in relation to the onset and detection of infestation in grain and to the associations of grain-infesting species.

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