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HYMENOPTEROUS PARASITES OF IPS PARACONFUSUS (COLEOPTERA: SCOLYTIDAE) LARVAE AND THEIR CONTRIBUTION TO MORTALITY: I. INFLUENCE OF HOST TREE AND TREE DIAMETER ON PARASITIZATION1

Published online by Cambridge University Press:  31 May 2012

J. C. Ball  and
D. L. Dahlsten
J. C. Ball
Affiliation:
Department of Entomological Sciences, Division of Biological Control, University of California, Berkeley
D. L. Dahlsten
Affiliation:
Department of Entomological Sciences, Division of Biological Control, University of California, Berkeley
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Abstract

The larval parasite complex of Ips paraconfusus Lanier is found to differ in Pinus ponderosa and Pinus lambertiana within the same local area. Ips paraconfusus was attacked by fewer species of parasites in ponderosa pine and the rate of parasitization was generally less in that tree species. Greater parasitization in sugar pine was not entirely accounted for by the additional parasite species, but also reflected greater efficacy by those species common to both trees. Evidence indicates that greater bark thickness in ponderosa pine at comparable diameters may have been responsible for the higher parasitization by the shared parasite species.

A significant negative regression of parasitization with diameter was found in sugar pine, but not in ponderosa pine. Most, if not all, of this regression is attributed to a single species, Rhopalicus pulchripennis, whose searching appears to be confined to the smooth, softer bark of the crown.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 11 , November 1973 , pp. 1453 - 1464
Copyright
Copyright © Entomological Society of Canada 1973

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References

Beaver, R. A. 1967. The regulation of population density in the bark beetle Scolytus scolytus (F.). J. Anim. Ecol. 36: 435–451.Google Scholar
Bedard, W. D. 1965. The biology of Tomicobia tibialis (Hymenoptera: Pteromalidae) parasitizing Ips confusus (Coleoptera: Scolytidae) in California. Contrib. Boyce Thompson Inst. 23(4): 77–82.Google Scholar
Berisford, C. W., Kulman, H. M., Pienkowski, R. L., and Heikkenen, H. J.. 1971. Factors affecting distribution and abundance of hymenopterous parasites of Ips spp. bark beetles in Virginia (Coleoptera: Scolytidae). Can. Ent. 103: 235–239.Google Scholar
Broadbent, L. 1948. Aphis migration and the efficiency of the trapping method. Ann. appl. Biol. 35: 379–394.Google Scholar
Bushing, R. W. 1965. A synoptic list of the parasites of Scolytidae (Coleoptera) in North America north of Mexico. Can. Ent. 97(5): 449–492.Google Scholar
Hassell, M. P. 1966. Evaluation of parasite or predator responses. J. Anim. Ecol. 35: 65–75.Google Scholar
Hedqvist, K. J. 1963. Die Feinde der Borkenkäfer in Schweden. I. Ergwespen (Chalcidoidea). Stud. For. Sece., No. 11. 176 pp.Google Scholar
Huffaker, C. B. and Kennett, C. E.. 1966. Studies of the parasites of olive scale, Parlatoria oleae (Colvee) through the compensatory action of two introduced parasites. Hilgardia 37(9): 283–335.Google Scholar
Keen, F. P. 1952. Insect enemies of western forests. U.S. Dep. Agric. misc. Publ. 273. 280 pp.Google Scholar
Lewis, T. 1959. A comparison of water traps, cylindrical sticky traps and suction traps for sampling thysanopteran populations at different levels. Ent. exp. appl. 2: 204–215.Google Scholar
Nuorteva, M. 1956. Uber den Fichtenstamm-Bastkäfer, Hylurgops palliatus Gyll., und seine Insektenfeinde. Acta ent. fenn. 13: 1–118.Google Scholar
Ryan, R. B. 1962. A device for measuring the oviposition potential of a bark beetle parasite. Can. Ent. 94(7): 737–738.Google Scholar
Steel, R. G. D. and Torrie, J. H.. 1960. Principles and procedures of statistics. McGrawHill. xvi + 481 pp.Google Scholar
Struble, G. R. and Hall, R. C.. 1955. The California five-spined engraver, its biology and control. U.S. Dep. Agric. Circ. 964. 21 pp.Google Scholar
Wood, D. L. 1963. Studies on host selection by Ips confusus (LeConte) (Coleoptera: Scolytidae). Univ. Calif. Publs Ent. 27(3): 241–282.Google Scholar