scholarly journals Repellent Action of Diatomaceous Earth against the Adult Red Flour Beetle Tribolium castaneum (Herbst)

2012 ◽  
Vol 4 (3) ◽  
pp. 783-788
Author(s):  
A. M. S. Reza ◽  
M. M. Hossain ◽  
S. Parween
Keyword(s):  
Tribolium Castaneum ◽  
Diatomaceous Earth ◽  
The Other ◽  
Red Flour Beetle ◽  
Flour Beetle ◽  
Repellent Action

Tribolium castaneum (Herbst) adults were released to choice chambers containing untreated flour in one half and diatomaceous earth (DE)-treated flour in the other half. The doses of DE used were 2-32 mg/g. Females, males and unsexed adults were exposed separately to each dose for 24-, 48-, 72-, 96- and 120-h. DE at 32 mg/g strongly repelled (P<0.001) both sexes and unsexed beetles at all exposure periods. The males showed comparatively more avoidance to DE-treated flour at longer exposures.© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v4i3.9637 J. Sci. Res. 4 (3), 783-788 (2012)

scholarly journals Euphorbia bupleuroides Desf. latex as biopesticide against the red flour beetle (Tribolium castaneum [Herbst, 1797]) and khapra beetle (Trogoderma granarium Everts, 1898)

2021 ◽  
Vol 117 (2) ◽  
pp. 1
Author(s):  
Imene BRIK ◽  
Naama FRAH
Keyword(s):  
Ambient Temperature ◽  
Tribolium Castaneum ◽  
Insecticidal Activity ◽  
Direct Contact ◽  
The Other ◽  
Red Flour Beetle ◽  
Laboratory Evaluation ◽  
Flour Beetle ◽  
Trogoderma Granarium ◽  
Khapra Beetle

<p>Laboratory evaluation of Euphorbia bupleuroides latex as biopesticide against the red flour beetle (Tribolium castaneum) and khapra beetle (Trogoderma granarium) were evaluated at ambient temperature. The insecticidal activity of latex was determined by direct contact application. Different concentrations were prepared by dilution of 2.5, 5.0, 7.0 and 10.0 µl of latex into 0.1 ml acetone. 1 µl was pumped regularly in the thorax of different insects. The latex of E. bupleuroides showed insecticidal activity against T. granarium and T. castaneum. High levels of mortality were associated with the increase in the concentration and time of exposure as well. T. granarium adults are generally more prone to latex insecticidal effects than T. castaneum adults. After 6 days of exposure to E. bupleuroides latex, the LC50 recorded was 14.12 µl for T. granarium adults, and 14.7 µl for T. castaneum. LC90 numbers, on the other hand, were 38.8 µl for the former, and 51.44 µl for the latter.</p>

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