Effect of Continuous Exposure of Malathion-Resistant Red Flour Beetles (Coleoptera: Tenebrionidae) to Malathion-Treated Wheat or Wheat Exposed to Treated Surfaces1

1983 ◽  
Vol 76 (3) ◽  
pp. 657-661
Author(s):  
N. D. G. White
Keyword(s):  
Continuous Exposure ◽  
Flour Beetles ◽  
Red Flour Beetles ◽  
Coleoptera Tenebrionidae

Effectiveness of Three Residual Insecticide Formulations To Control Red Flour Beetles (Coleoptera: Tenebrionidae) On Painted and Unpainted Steel2

1991 ◽  
Vol 26 (4) ◽  
pp. 395-400 ◽  
Author(s):  
D. M. Claborn ◽  
G. E. Tetrault ◽  
F. H. Arthur
Keyword(s):  
Metal Surfaces ◽  
Insect Pests ◽  
Steel Plates ◽  
Flour Beetles ◽  
Red Flour Beetles ◽  
Coleoptera Tenebrionidae

Three insecticides were tested for efficacy against adult red flour beetles on painted and unpainted steel plates. Microencapsulated formulations of chlorpyrifos and diazinon provided 100% control for 47 weeks on both painted and unpainted surfaces. A lacquer-based formulation of chlorpyrifos was not as effective and could have been affected by paint. These findings have importance in the control of stored product insect pests on painted metal surfaces, including the decks of naval vessels.

Food quality influences density-dependent fitness, but not always density-dependent habitat selection, in red flour beetles (Coleoptera: Tenebrionidae)

2019 ◽  
Vol 151 (6) ◽  
pp. 728-737
Author(s):  
William D. Halliday ◽  
Caroline Bourque ◽  
Gabriel Blouin-Demers
Keyword(s):  
Habitat Selection ◽  
Density Dependence ◽  
Soy Flour ◽  
Food Sources ◽  
Corn Flour ◽  
Density Dependent ◽  
Flour Beetles ◽  
Density Dependent Habitat Selection ◽  
Red Flour Beetles ◽  
Coleoptera Tenebrionidae

AbstractDensity-dependent habitat selection models inherently rely on the negative relationship between population density and mean fitness in different habitats. Habitats differing in quality, such as different food sources or habitat structure, can have different strengths of density-dependent relationships, which can then affect patterns of density dependence in habitat selection. We tested the hypothesis that density dependence in fitness dictates the patterns in density-dependent habitat selection: individuals should prefer higher-quality habitat over lower-quality habitat. We used controlled experiments with red flour beetles (Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)) to measure density dependence of fitness and to examine density-dependent habitat selection by beetles in wheat (Triticum Linnaeus (Poaceae)), corn (Zea mays Linnaeus (Poaceae)), and soy (Glycine max (Linnaeus) Merrill (Fabaceae)) flour habitats. Despite large differences in fitness between habitats (fitness was the highest in wheat flour, lower in corn flour, and zero in soy flour), beetles showed only weak preference for wheat over corn flour and for corn over soy flour, but showed strong preference for wheat over soy flour. These preferences were the strongest at low density. This study gives insight into the relationship between habitat quality and density-dependent habitat selection in flour beetles.

Cyfluthrin WP and EC Formulations to Control Malathion-Resistant Red Flour Beetles and Confused Flour Beetles (Coleoptera: Tenebrionidae): Effects of Paint on Residual Efficacy2

1992 ◽  
Vol 27 (4) ◽  
pp. 436-444 ◽  
Author(s):  
Frank H. Arthur
Keyword(s):  
Laboratory Strain ◽  
Galvanized Steel ◽  
Flour Beetle ◽  
Flour Beetles ◽  
Equivalent Control ◽  
Resistant Strains ◽  
Steel Panels ◽  
Red Flour Beetles ◽  
Confused Flour Beetle ◽  
Coleoptera Tenebrionidae

Malathion-resistant red flour beetle and confused flour beetle field strains and a pesticide-susceptible laboratory strain of each species were exposed on unpainted and painted galvanized steel panels treated with cyfluthrin EC and WP formulations at label rates. Residues from both formulations applied to unpainted steel killed 99.8% of the insects after 1 h exposure for up to 235 d after treatment. Equivalent control on painted panels lasted approximately 3 wks and required 24 h exposure. Residual mortality on painted panels treated with cyfluthrin WP and EC quickly declined; tests with red flour beetles and confused flour beetles were discontinued after 116 and 123 d, respectively. All of the malathion-resistant strains were as susceptible as the laboratory strain to cyfluthrin, and there was no difference between the EC and WP formulations.

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