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Title: Influence of predators and parisitoids on bark beetle productivity

Author: Weslien, Jan;

Date: 1991

Source: In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 396

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: In an earlier field experiment, natural enemies of the bark beetle, Ips typographus (L) were estimated to have reduced bark beetle productivity by more than 80 percent. To test this hypothesis, spruce logs (Picea abies) were placed in the forest in the spring, prior to commencement of flight by I. typographus. The logs were screened at different times following onset of bark beetle attack. The screens prevented further colonization by bark beetles and associated insects. The insects were subsequently collected as they emerged from the logs the following autumn or the following spring.

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Weslien, Jan 1991. Influence of predators and parisitoids on bark beetle productivity. In: Baranchikov, Yuri N.; Mattson, William J.; Hain, Fred P.; Payne, Thomas L., eds. Forest Insect Guilds: Patterns of Interaction with Host Trees; 1989 August 13-17; Abakan, Siberia, U.S.S.R. Gen. Tech. Rep. NE-153. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 396

 


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