@article {11503,
	title = {Deltamethrin-induced feeding plasticity in pyrethroid-susceptible and -resistant strains of the maize weevil, Sitophilus zeamais},
	journal = {Journal of Applied Entomology},
	volume = {133},
	number = {7},
	year = {2009},
	month = {August},
	pages = {524-532},
	abstract = {Phenotypic plasticity contributes to the adaptative evolution of populations exposed to new or altered environments. Feeding plasticity is a component of phenotypic plasticity not usually considered in insect strains adapted to insecticide-altered environments, but which may either accentuate or mitigate insecticide resistance. This is a concern in the pyrethroid-resistant strains of the maize weevil Sitophilus zeamais Motsch. (Col., Curculionidae), and the reason for this study. A pyrethroid-susceptible and two pyrethroid-resistant strains of maize weevil were subjected to free-choice and no-choice tests with maize grains sprayed with increasing doses of the pyrethroid, deltamethrin. The insects from the pyrethroid-resistant strains exhibited higher feeding avoidance with increased deltamethrin doses than insects from the susceptible strain when subjected to free-choice tests. The strains of maize weevil physiologically resistant to pyrethroids were also behaviourally resistant to deltamethrin [long dash] an additional management concern. The resistant strains avoid deltamethrin-sprayed grains and are less nutritionally affected by this compound, with divergent responses from the susceptible strain with increased doses of deltamethrin. Furthermore, the higher relative growth rate and consequently higher efficiency of food conversion observed in the insecticide-resistant strains were significant even without insecticide exposure, indicating that these traits are stimulus-independent and may persist even without further insecticide selection, potentially limiting the options available for their management.},
	keywords = {Sitophilus zeamais},
	isbn = {0931-2048},
	author = {Guedes, N. M. P. and Guedes, R. N. C. and Silva, L. B. and Cordeiro, E. M. G.}
}
@article {11152,
	title = {Biology and host specificity of Aulacobaris fallax (Coleoptera: Curculionidae), a potential biological control agent for dyer{\textquoteright}s woad, Isatis tinctoria (Brassicaceae) in North America},
	journal = {Journal of Applied Entomology},
	volume = {133},
	number = {5},
	year = {2009},
	month = {June},
	pages = {345-354},
	abstract = {Dyer{\textquoteright}s woad, Isatis tinctoria, a plant of Eurasian origin is a problematic weed in western North America against which a classical biological weed control programme was initiated in 2004. Three European insect species were selected as candidate agents to control this invasive species, including the root-mining weevil Aulacobaris fallax. To determine its suitability as an agent, the biology and host specificity of A. fallax were studied in outdoor plots and in the field between 2004 and 2006 in its native European range. Aulacobaris fallax is a univoltine species that lays its eggs from March to August into leaf stalks and roots of dyer{\textquoteright}s woad. Larvae mine and pupate in the roots and adults emerge from August to October. Up to 62\% of the dyer{\textquoteright}s woad plants at the field sites investigated were attacked by this weevil. In no-choice host-specificity tests, A. fallax attacked 16 out of 39 species and varieties within the Family Brassicaceae. Twelve of these are native to North America. In subsequent multiple-choice tests, seven species, all native to North America, suffered a similar level of attack as dyer{\textquoteright}s woad, while none of the European species were attacked. Our results demonstrate the importance of including test plant species that have not co-evolved with the respective candidate agent. In sum, we conclude that the risk of non-target effects is too high for A. fallax to be considered as a biological control agent for dyer{\textquoteright}s woad in the United States.},
	keywords = {Aulacobaris fallax},
	isbn = {0931-2048},
	author = {Gerber, E. and Cortat, G. and Hinz, H. L.}
}
@article {10973,
	title = {Response of Dendroctonus brevicomis to different release rates of nonhost angiosperm volatiles and verbenone in trapping and tree protection studies},
	journal = {Journal of Applied Entomology},
	volume = {133},
	number = {2},
	year = {2009},
	month = {March},
	pages = {143-154},
	abstract = {A blend of eight nonhost angiosperm volatiles (benzyl alcohol, benzaldehyde, guaiacol, nonanal, salicylaldehyde, (E)-2-hexenal, (E)-2-hexen-1-ol and (Z)-2-hexen-1-ol) without (NAV) and with (NAVV) (-)-verbenone (4,6,6-trimethylbicyclo[3.1.1]hept-3-en-2-one) were tested at low (L), medium (M) and high (H) release rates for their ability to reduce attraction of western pine beetle, Dendroctonus brevicomis LeConte, to attractant-baited (exo-brevicomin (racemic, 3 mg/d), frontalin (racemic, 3 mg/d) and myrcene (18 mg/d)) multiple funnel traps. NAV-L (40 mg/d) had no significant effect. Verbenone alone (50 mg/d) and NAV-M (240 mg/d) both significantly reduced attraction, but no significant difference was observed between the two treatment means. NAV-H (430 mg/d) significantly reduced catches by [approximately]60\% and 78\% compared to verbenone alone and the baited control, respectively. In a second experiment, combining (-)-verbenone with NAV (NAVV) increased the effects observed in Experiment 1. NAVV-M (240 mg/d) resulted in an [approximately]69\% and 83\% reduction in trap catch compared to verbenone alone and the baited control, respectively. Significantly fewer D. brevicomis were captured in NAVV-H (430 mg/d) than any other treatment resulting in an [approximately]93\% reduction in trap catch compared to the baited control. In a third experiment, NAVV was tested at three release rates for its ability to protect individual ponderosa pines, Pinus ponderosa Dougl. ex Laws., from attack by D. brevicomis. Cumulative release rates varied in direct proportion to tree diameter, but represented quarter, half and full NAVV rates. NAVV significantly reduced the density of D. brevicomis attacks, D. brevicomis successful attacks, and levels of tree mortality on attractant-baited trees. Only three of 15 NAVV-treated trees died from D. brevicomis attack while [approximately]93\% mortality (14/15) was observed in the untreated, baited control. Quarter and half rates were ineffective for reducing tree mortality.},
	keywords = {Dendroctonus},
	isbn = {0931-2048},
	author = {Fettig, C. J. and McKelvey, S. R. and Dabney, C. P. and Borys, R. R. and Huber, D. P. W.}
}
@article {10660,
	title = {Are the palms Washingtonia filifera and Chamaerops humilis suitable hosts for the red palm weevil, Rhynchophorus ferrugineus (Col. Curculionidae)?},
	journal = {Journal of Applied Entomology},
	volume = {133},
	number = {7},
	year = {2009},
	month = {August},
	pages = {565-567},
	abstract = {The red palm weevil, Rhynchophorus ferrugineus (Olivier) (Coleoptera, Curculionidae), is a widely distributed pest which has recently become the major pest of palms in the Mediterranean Basin. This weevil has been recorded on 19 different palm species, however, the host status of Washingtonia filifera and Chamaerops humilis remains unclear. The present study was carried out to check whether these species had either antixenotic or antibiotic mechanisms of resistance against this pest. Our results show that both W. filifera and C. humilis are resistant to R. ferrugineus. Resistance in W. filifera is based on antibiosis whereas in C. humilis resistance is based on antixenosis.},
	keywords = {Rhynchophorus ferrugineus},
	isbn = {0931-2048},
	author = {Dembilio, O. and Jacas, J. A. and Llacer, E.}
}
