Postharvest Control of the Date Moth Ectomyelois ceratoniae ... - Iresa
Postharvest Control of the Date Moth Ectomyelois ceratoniae ... - Iresa
Postharvest Control of the Date Moth Ectomyelois ceratoniae ... - Iresa
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Table 3. LC 50 values calculated for mortality within 24 h <strong>of</strong>exposure <strong>of</strong> E. <strong>ceratoniae</strong> adults to E. rudis and E. camaldulensisessential oilsPlant species E. rudis E. camaldulensisLC a,b 50 (LD 50)31.3734.37(24.9 - 70.21) (21.07 - 48.26)Slope ± SEM2.17 ± 0.71 4.49 ± 0.88(0.18 - 4.16) (2.03 - 6.95)Degree <strong>of</strong> freedom 10 10χ2 20.27 10.35aUnits LC 50 = µl/ air, applied for 24 h at 25 °C.b95% lower and upper confidence limits are shown in paren<strong>the</strong>sis.Table 4. LT 50 values calculated for E. <strong>ceratoniae</strong> adults exposed to E. rudis and E. camaldulensisessential oilsEssential oilConcentrationLT(µl/l air)50 (h) aDegree <strong>of</strong>Slope ± SEfreedomχ2E. rudis13.1639.50 3.0 ± 0.47(32.73 - 47.04) (2.14 - 4.02)10 0.2526.3118.27 2.33 ± 0.31(14.53 - 22.26) (1.72 - 2.95)10 4.6287.73 3.43 ± 0.5013.16E.(73.73 - 102.97) (2.45 - 4.41)10 5.25camaldulensis38.31 4.34 ± 0.5826.31(32.58 - 44.23) (3.19 - 5.50)10 5.10a95% lower and upper confidence limits are shown in paren<strong>the</strong>sis.DISCUSSIONcineole content in eucalyptus essentialThis study showed that <strong>the</strong> essential oils and <strong>the</strong>ir toxicity to insects.oils <strong>of</strong> E. camaldulensis and E. rudis Fur<strong>the</strong>rmore, this compound whencollected from Korbus were rich in present in eucalyptus essential oilsmonoterpenoids. Moreover, <strong>the</strong> major showed promising fumigant toxicity (36,common compounds <strong>of</strong> <strong>the</strong>se two oils 38, 40). Additionally, Yang et al. (52)were 1,8-cineole (20.62- 19.87%), α- attributed <strong>the</strong> toxicity <strong>of</strong> E. globuluspinene (16.49- 14.49%), γ-terpinene (4.8- essential oil against <strong>the</strong> eggs and adults <strong>of</strong>6.04%) and terpinene-4-ol (4.45- 4.46%). Pediculus humanus capitis (Anoplura:Among various compounds <strong>of</strong> Pediculidae) to <strong>the</strong> action <strong>of</strong> 1,8 cineole.eucalyptus essential oils, 1,8-cineole is Besides, Lee et al. (24) reported that<strong>the</strong> most important. This compound is essential oils rich in 1,8-cineole presentedcharacteristic <strong>of</strong> <strong>the</strong> Eucalyptus genus and a strong toxicity against Sitophilusis mainly responsible <strong>of</strong> its insecticidal oryzae, Tribolium castaneum andproprieties (5). Indeed, 1,8 cineole which Rhyzopertha dominica.is <strong>the</strong> major compound <strong>of</strong> E.Moreover, <strong>the</strong> pesticidal activity <strong>of</strong>camaldulensis and E. rudis essential oils eucalyptus oils has been due to <strong>the</strong>was recognized to be toxic on several components such as α-pinene and γ-insect species. Lucia et al. (31) indicated terpinene (4, 27, 28, 29, 39, 47). In this<strong>the</strong> presence <strong>of</strong> correlation between 1,8-Tunisian Journal <strong>of</strong> Plant Protection 207 Vol. 5, No. 2, 2010
Change language