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THE TEMPORAL AND SPATIAL ARRIVAL PATTERN OF DENDROCTONUS BREVICOMIS IN PONDEROSA PINE1

Published online by Cambridge University Press:  31 May 2012

Frederick M. Stephen  and
Donald L. Dahlsten
Frederick M. Stephen
Affiliation:
Division of Biological Control, Department of Entomological Sciences, University of California, Berkeley
Donald L. Dahlsten
Affiliation:
Division of Biological Control, Department of Entomological Sciences, University of California, Berkeley
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Abstract

Continuous trapping on the bark surface of trees infested with Dendroctonus brevicomis LeConte was carried out during six beetle generations from June 1969 to November 1971, at the University of California’s Blodgett Forest Research Station in the central Sierra Nevada mountains. Significant linear correlation was found between the density of D. brevicomis trapped on the surface of infested trees and the initial within-tree beetle densities. In the first beetle generation, mass arrival was rapid and intense (averaging 1167 beetles per 2.7 sq. dm of trapping surface on each tree, during a mean of 8.8 days). The arrival patterns during this generation were quite consistent between trees. During the second generation, mass arrival was prolonged over a mean of 19.4 days and fewer beetles were trapped ( per 2.7 dm2 of trapping area per tree). The patterns of arrival were more variable during this second generation. In generation 1, with the exception of one tree, the beetles were distributed equally at the three trapping heights (4.5, 7.5, and 10.5 m). In generation 2 they were more abundant on the traps at the lower portions of the tree.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 3 , March 1976 , pp. 271 - 282
Copyright
Copyright © Entomological Society of Canada 1976

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References

REFERENCES

DeMars, C. J. 1970. Frequency distribution, data transformation, and analysis of variations used in determination of optimum sample size and effort for broods of the western pine beetle, pp. 42–65. In Stark, R. W., and Dahlsten, D. L. (Eds.), Studies on the population dynamics of the western pine beetle, Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae). Univ. Calif. Div. Agric. Sci., Berkeley.Google Scholar
Dudley, C. O. 1971. A sampling design for the egg and first instar larval populations of the western pine beetle, Dendroctonus brevicomis (Coleoptera: Scolytidae). Can. Ent. 103: 1291–1313.CrossRefGoogle Scholar
Hopkins, A. D. 1909. The genus Dendroctonus. U.S. Dep. Agric. Tech. Ser. 17, Pt. I. 164 pp.Google Scholar
Kinzer, G. W., Fentiman, A. F., Page, T. F., Foltz, R. L., Vité, J. P., and Pitman, G. B.. 1969. Bark beetle attractants: identification, synthesis and field bioassay of a new compound isolated from Dendroctonus. Nature, Lond. 221: 447–448.CrossRefGoogle Scholar
Miller, J. M. and Keen, F. P.. 1960. Biology and control of the western pine beetle. Misc. Publ. U.S. For. Ser., No. 800. 381 pp.Google Scholar
Sokal, R. R. and Rohlf, F. J.. 1969. Biometry. W. H. Freeman, San Francisco. 776 pp.Google Scholar
Stark, R. W. and Dahlsten, D. L. (Eds.) 1970. Studies on the population dynamics of the western pine beetle, Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae). Univ. Calif. Div. Agric. Sci., Berkeley. 174 pp.Google Scholar
Wood, D. L. 1972. Selection and colonization of ponderosa pine by bark beetles, pp. 101–117. Insect-plant relationships. Symp. Roy. ent. Soc. Lond., No. 6.Google Scholar