The white pine weevil in British Columbia: Basis for an integrated pest management system

Abstract

f a r o l , J.H. or den^, R.G. ~r a s e r~, and A. yanchuk4Research programs to date in British Columbia on the bioloLes programmes de recherche B ce jour en Colombie-Britannique gy, damage and control of the white pine weevil, Pissodes strobi portant sur la biologie, les domrnages et le contr6le du chapeck), a pest of spruce, Picea spp. and pine, P i w spp., are reviewed.lanpn du pin blanc, Pissodes strobi (Peck), un ravageur des -ttes, Significant progress has been made in the areas of genetic resisPicea spp. et des pins, Pinus spp., ont fait l'objet d'une etude. Des tance, silvicultural and chemical control. An integrated pest progrks significatifs ont kt6 enregistres au niveau de la resistance management (IPM) system is formulated which combines silvigenetique et du conMle sylvicole et chimique. Un syseme de gesculture-driven and resistance-driven tactics. The system relies on tion integr6e des ravageurs (GIR) est formule et combine des tacaccurate hazard rating of plantation sites and requires continuous tiques dkcoulant de la sylviculture et de la resistance des arbres. monitoring of attack levels and the forecasting of plantation Le systkme repose sur une evaluation precise du risque relatif aux productivity under various IPM tactics through the use of a sites de plantation et necessite une surveillance continue des decision support system. Research needs which would increase niveaux d'attaque et de la productivite des plantations en fonceffectiveness of the IPM system are reviewed and organized in tion de diverses tactiques de GIR grlce B l'utilisation d'un systhe context of the plantation productivity cycle. tkme de prise de dkcision. Les domaines de recherche qui pourraient accroitre l'efficacitk d'un systkme GIR sont revisks et

The role of fungus Beauveria bassiana in reducing the number of Pissodes castaneus (Col., Curculionidae) in young forests

“…So far, the papers published by Alauzet (1987Alauzet ( , 1990 and Kenis et al (1994Kenis et al ( , 1996Kenis et al ( , 2004 contain most information on the parasitoids of P. castaneus. Whilst little information concerns the pathogens of Pissodes weevils, mainly white pine weevil Pissodes strobi (Peck), which, especially in North America, is a dangerous pest of white pine (Pinus strobus L.) and Norway spruce [Picea abies (L.) H. Karst] (Alfaro et al 1995). Streett et al (1975) described the morphology of microsporidia Nosema sp.…”

Insecticidal activity of alpha-cypermethrin against small banded pine weevil Pissodes castaneus (Coleoptera: Curculionidae) in forest plantations and thickets

“…A study of this scope were primarily focused on the white pine weevil Pissodes strobi (Peck), a pest of white pine (Pinus strobus L.) and 10 species and hybrids of spruce (Picea spp.) (Russel et al 1990, Alfaro et al 1995, as well as the large pine weevil Hylobius abietis, which damages young coniferous trees. DeGroot and Helson (1993) exposed P. strobus weevils to white pine twigs sprayed with permethrin and observed the knockdown of insects with LC 50 of 0.053 and 0.095 μg/cm 2 of twig bark after, respectively, 1 and 14 days.…”

Past infestations of the white pine weevil in naturally regenerated spruce stands

“…Forests that have a high hazard rating may warrant a silvicultural prescription that includes planting of weevil-resistant trees (Kiss et al 1994, high density planting, and a mixing of spruce with a deciduous overstory (Taylor and Cozens 1994, Alfaro et al 1995, Taylor et al 1996.…”