Abstract
A sticky trap with 3 m2 surface area was modified by changes in attractant release rate, vertical dispersion of the attractant, and addition of a tree trunk silhouette to the trap axis. As attractant release rate increased, the number ofDendroctonus brevicomis caught at the source of attractant and at 1.5 and 5.2 m above ground on two vertical silhouettes 4.5 m away increased. In one experiment, more beetles were caught at a dispersed source of attractant than at a point source. Fewer beetles were caught at the lower traps on the two outlying silhouettes when a silhouette was at the source, than when no silhouette was at the source. As attractant release rate increased, the catch of a predator,Temnochila chlorodia, increased at the source.
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Coleoptera: Scolytidae.
Based in part on a thesis submitted by Paul E. Tilden to the University of California, Berkeley, in partial fulfillment of the requirements for the Master of Science degree in entomology, December 1976. These studies were supported by the Forest Service, U.S. Department of Agriculture, and in part by the Rockefeller Foundation and a joint grant (NSF GB-34718/BMS 75-04223) from the U.S. National Science Foundation and the U.S. Environmental Protection Agency to the University of California. The findings, opinions, and recommendations are not necessarily those of the funding agencies or the University of California.
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Tilden, P.E., Bedard, W.D., Lindahl, K.Q. et al. TrappingDendroctonus brevicomis Changes in attractant release rate, dispersion of attractant, and silhouette. J Chem Ecol 9, 311–321 (1983). https://doi.org/10.1007/BF00988451
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DOI: https://doi.org/10.1007/BF00988451