Abstract
The fumigant toxicities of eucalyptus essential oil and 1,8-cineole, the major component of eucalyptus oil, were tested against a chlorpyrifos-methyl resistant strain and a reference strain of the sawtoothed grain beetle, Oryzaephilus surinamensis (L.). The resistant strain showed 1.9- and 2.2-fold higher tolerance against essential oil and 1,8-cineole fumigation toxicity, respectively, relative to the susceptible strain. The increased tolerance for the essential oil may be the result of cross-resistance. The resistance mechanisms in the resistant strain are discussed in relation to elevated detoxifying enzymes such as cytochrome P450 and esterases. (C) 2000 Elsevier Science Ltd.
Original language | English |
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Pages (from-to) | 383-389 |
Number of pages | 7 |
Journal | Journal of Stored Products Research |
Volume | 36 |
Issue number | 4 |
DOIs | |
State | Published - 15 Oct 2000 |
Keywords
- 1
- 8-Cineole
- Cross-resistance
- Essential oil
- Eucalyptus globulus
- Fumigant toxicity
- Oryzaephilus surinamensis