Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-05T09:16:44.636Z Has data issue: false hasContentIssue false
  • English
  • Français

DEVELOPMENT OF SAMPLING TECHNIQUES AND LIFE TABLES FOR THE FIR ENGRAVER SCOLYTUS VENTRALIS (COLEOPTERA: SCOLYTIDAE)1

Published online by Cambridge University Press:  31 May 2012

Alan A. Berryman
Alan A. Berryman
Affiliation:
Washington State University, Pullma
Get access Rights & Permissions [Opens in a new window]

Abstract

Methods are presented for sampling and constructing life tables for Scolytus ventralis LeConte with the objective of comparing the histories of populations inhabiting individual trees. A bark area of 72 sq. in. was an effective sample unit. Within-tree variation was minimized by taking two sample units from two vertical strata at each sampling date. Trees were serially sampled several times during development of the insect.

Population tables were constructed for each sampling date and life tables were developed from the complete series of population tables. The precision of the life table estimates varied between 10% and 40% of the mean and generally decreased as population density diminished during development. A sampling design is presented for increasing the precision of life tables, and methods are given for determining the number of trees required for estimating the mean density when studying populations occupying large areas.

Type
Articles
Information
The Canadian Entomologist , Volume 100 , Issue 11 , November 1968 , pp. 1138 - 1147
Copyright
Copyright © Entomological Society of Canada 1968

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Ashraf, M. 1968. Biological studies of Scolytus ventralis LeConte (Coleoptera: Scolytidae), with particular reference to the nematode parasite, Sulphuretylenchus elongatus (Massey). Ph.D. Thesis, Washington State Univ.Google Scholar
Beaver, R. A. 1966. The development and expression of population tables for the bark beetle, Scolytus scolytus (F.). J. Anim. Ecol. 35: 27–41.CrossRefGoogle Scholar
Berryman, A. A. 1965. Insect predators of the western pine beetle, Dendroctonus brevicomis LeConte, with particular reference to the clerid, Enoclerus lecontei (Wolcott). Ph.D. Thesis, Univ. Calif., Berkeley.Google Scholar
Berryman, A. A. 1968. Distributions of Scolytus ventralis attacks, emergence, and parasites in grand fir. Can. Ent. 100: 57–68.Google Scholar
Deevey, E. S. 1947. Life tables for natural populations of animals. Q. Rev. Biol. 22: 283–314.CrossRefGoogle ScholarPubMed
DeMars, C. J. Jr., 1966. An analysis of within-tree changes in distribution of the western pine beetle, Dendroctonus brevicomis LeConte, during development. Ph.D. Thesis, Univ. Calif., Berkeley.Google Scholar
Knight, F. B. 1959. Partial life tables for the Black Hills beetle. J. econ. Ent. 52: 1199–1202.Google Scholar
Morris, R. F., 1955. The development of sampling techniques for forest insect defoliators, with particular reference to the spruce budworm. Can. J. Zool. 33: 225–294.CrossRefGoogle Scholar
Morris, R. F., and Miller, C. A.. 1954. The development of life tables for the spruce budworm. Can. J. Zool. 32: 283–301.Google Scholar
Rudinsky, J. A. 1963. Response of Dendroctonus pseudotsugae Hopkins to volatile attractants. Contr. Boyce Thompson Inst. Pl. Res. 22: 22–38.Google Scholar
Snedecor, G. W. 1956. Statistical methods. 5th ed. Iowa State University Press.Google Scholar
Stark, R. W. 1958. Life tables for the lodgepole needle miner Recurvaria starki Free., (Lepidoptera: Gelechiidae). Proc. 10th Int. Congr. Ent., Vol. 4, pp. 151–162.Google Scholar
Stark, R. W. 1966. The organization and analytical procedures required by a large ecological systems study. In (Watt, K. E. F., ed.) Systems analysis in ecology, pp. 37–68. Academic Press Inc., N.Y.CrossRefGoogle Scholar
Stark, R. W., and Borden, J. H.. 1965. Observations on mortality factors of the fir engraver beetle, Scolytus ventralis (Coleoptera: Scolytidae). J. econ. Ent. 58: 1162–1163.CrossRefGoogle Scholar
Struble, G. R. 1957. The fir engraver, a serious enemy of western true firs. Rep. U.S. Dep. Agric. Prod. Res., No. 11.Google Scholar
Vité, J P., and Gara, R. I.. 1962. Volatile attractants from ponderosa pine attacked by bark beetles (Coleoptera: Scolytidae). Contr. Boyce Thompson Inst. Pl. Res. 21: 251–274.Google Scholar
Wood, D. L., and Bushing, R. W.. 1963. The olfactory response of Ips confusus (LeConte) (Coleoptera: Scolytidae) to the secondary attraction in the laboratory. Can. Ent. 95: 1066–1078.CrossRefGoogle Scholar