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Life cycles and shoot-feeding of the pine shoot beetles
The life cycle and shoot-feeding of Tomicus piniperda (L.) and T. minor (Hart.) (Col., Scolytidae) was studied in Simonstorp in southern Sweden (N. 58o 47', E. 16o 10') during the period 1972- 1976.Expand
Blue-stain fungi associated with Tomicus piniperda in Sweden and preliminary observations on their pathogenicity
Des attaques massives de Tomicus piniperda ont ete provoquees sur des jeunes pins sylvestres de vitalite variee, en appâtant les insectes avec des fragments de rondins de pin frais. Les arbres ontExpand
The influences of forest stand management on biotic and abiotic risks of damage
It is found that the silvicultural operations that have the largest influence on both biotic and abiotic risks to European forest stands are closely related to species composition and the structure of the overstorey. Expand
Spatial distribution of crown damage and growth losses caused by recurrent attacks of pine shoot beetles in pine stands surrounding a pulp mill in southern Sweden
Crown damage and growth losses caused by the shoot‐feeding of Tomicus piniperda (L.) and T. minor (Hart.) (Col., Scolytidae) were studied in pine forests surrounding a timber yard established in 1977Expand
Induced Terpene Accumulation in Norway Spruce Inhibits Bark Beetle Colonization in a Dose-Dependent Manner
This is the first study demonstrating a dose-dependent relationship between induced terpenes and tree resistance to bark beetle colonization under field conditions, indicating that terpene induction may be instrumental in tree resistance. Expand
Influence of Fungal Infection and Wounding on Contents and Enantiomeric Compositions of Monoterpenes in Phloem of Pinus sylvestris
To identify chemical resistant markers induced by fungal or mechanical injury, young trees of Scots pine were subjected to inoculations of blue stain fungi associated with the pine shoot beetles Tomicus piniperda and T. minor, and the biosynthesis of monoterpene enantiomers is discussed in relation to induced pathogen resistance. Expand
Pathogenicity of the blue-stain fungi Leptographium wingfieldii and Ophiostoma minus to Scots pine : effect of tree pruning and inoculum density
The pathogenicity of the blue-stain fungi Leptographiumwingfieldii Morelet and Ophiostomaminus (Hedge.) H. et P. Syd., associated with the pine shoot beetle Tomicuspiniperda (L.), was determined onExpand
Induced and spontaneous attacks by pine shoot beetles on young Scots pine trees: tree mortality and beetle performance
Both Tomicus‐species are dependent on dead or dying host material for their reproduction, and outbreaks on living trees cannot become selfperpetuating, not even in severely weakened stands. Expand