Potential of zimtaldehyde, 4-allyl-anisol, linalool, terpineol and other phytochemicals for the control of the confused flour beetle (Tribolium confusum J. d. V.) (Col., Tenebrionidae)

  • P. C. Ojimelukwe
  • C. Adler


Toxicity and repellency effects of several pure compounds (of plant origin) against the confused flour beetle (Tribolium confusum) were investigated in a filter paper test. The compounds were α-pinen, β-pinen, 4-allyl-anisol, camphor, 1,8-cineol, eugenol, linalool, menthol, piperin, terpineol, thymol and zimtaldehyde. Five compounds (4-allyl-anisol, linalood, terpineol, thymol and zimtaldehyde) caused enough mortality of this insect to allow the determination of LD50 and LD95 values. Zimtaldehyde and 4-allyl-anisol showed the strongest toxicity effects with LD50 values of 0.04–0.05 μl/cm2 within an exposure period of 24 h. When the isolated fumigant effects were tested by separating the insects from the filter paper, the toxicity of zimtaldehyde (LD50=0.29 μl/cm2) was much lower than that of 4-allyl-anisol (LD50=0.10μl/cm2).


Camphor Eugenol Linalool Thymol Menthol 
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Copyright information

© Blackwell Wissenschafts-Verlag 1999

Authors and Affiliations

  • P. C. Ojimelukwe
    • 1
  • C. Adler
    • 1
  1. 1.Federal Biological Research Centre for Agriculture and ForestryInstitute for Stored Product ProtectionBerlin

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