Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2007
Forfattere
Adam ParuchSammendrag
No abstract has been registered
Forfattere
Gudbrand Lien J.B. Hardaker Leif Jarle Asheim Ståle StørdalSammendrag
No abstract has been registered
Sammendrag
No abstract has been registered
Sammendrag
No abstract has been registered
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No abstract has been registered
Sammendrag
Host tree terpenes can influence attraction of conifer-infesting bark beetles to their aggregation pheromones, and both synergistic and inhibitory effects have been reported. We tested a gradient of ratios of (–)-α-pinene, the predominant monoterpene in Norway spruce, to the pheromone of Ips typographus, a major pest of Norway spruce. Attraction of I. typographus increased as the release rate of (–)-α-pinene increased. The two highest (–)-α-pinene : pheromone ratios (526 : 1 and 2595 : 1) attracted twice as many I. typographus as pheromone alone, whereas low to intermediate ratios (56 : 1, 274 : 1) did not differ from pheromone alone. Our results are in agreement with a proposed model, which suggests that bark beetles display unique response profiles to host terpenes depending on the physiological condition of the host trees that they typically colonize. Ips typographus, which is an aggressive species capable of colonizing and killing healthy trees, showed an increased attraction to monoterpene : pheromone ratios, and this may be high enough to inhibit attraction of less aggressive beetle species typically colonizing dead, dying or stressed trees. Attraction of associates of I. typographus was also modified by (–)-α-pinene. Ips duplicatus, a competitor of I. typographus, showed increased attraction to the pheromone of I. typographus across all concentrations of (–)-α-pinene.
Forfattere
Guro Ådnegard Skarstad Laura Terragni Hanne TorjusenSammendrag
No abstract has been registered
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Sanna Koutaniemi Tino Warinowski Anna Karkonen Edward Alatalo Carl Gunnar Fossdal Pekka Saranpaa Tapio Laakso Kurt V. Fagerstedt Liisa K. Simola Lars Paulin Stephen Rudd Teemu H. TeeriSammendrag
No abstract has been registered
Forfattere
Rune Slimestad Torgils Fossen Ingunn Molund VågenSammendrag
Slimestad, Rune har oppgitt Særheim Research Centre som adresse i posten/aa
2006
Forfattere
Aud Tennøy Jens Kværner Karl Idar GjerstadSammendrag
No abstract has been registered