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MOISTURE STRESS AND FIR ENGRAVER (COLEOPTERA: SCOLYTIDAE) ATTACK IN WHITE FIR INFECTED BY TRUE MISTLETOE

Published online by Cambridge University Press:  31 May 2012

George T. Ferrell
George T. Ferrell
Affiliation:
Pacific Southwest Forest and Range Experiment Station, Forest Service, United States Department of Agriculture, Berkeley, California
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Abstract

Xylem sap tension, an indication of moisture stress, was compared in foliated twigs of white fir infected by the mistletoe, Phoradendron bolleanum subspecies pauciflorum, and in paired, uninfected fir at the lower, mid-, and upper crown level. The upper boles were examined for fir engraver attacks. Reproductively successful attacks containing little or no host oleoresin were found in the infected fir, while only a single unsuccessful attack filled with oleoresin was found in the uninfected trees. Mean moisture stress in the upper crowns of most of the infected fir exceeded that in uninfected trees in all paired comparisons except one with a light infection. No differences in mean moisture stress between infected and uninfected trees were found at the lower and mid-crown levels.

Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 3 , March 1974 , pp. 315 - 318
Copyright
Copyright © Entomological Society of Canada 1974

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References

Berryman, A. A. 1969. Responses of Abies grandis to attack by Scolytus ventralis (Coleoptera: Scolytidae). Can. Ent 101: 1033–1041.CrossRefGoogle Scholar
Felix, L. S., Uhrenholdt, B., and Parmeter, J. R. Jr., 1971. Association of Scolytus ventralis (Coleoptera: Scolytidae) and Phoradendron bolleanum subspecies pauciflorum on Abies concolor. Can. Ent. 103: 1697–1703.CrossRefGoogle Scholar
Ferrell, G. T. 1971. Host selection by the fir engraver, Scolytus ventralis (Coleoptera: Scolytidae): Preliminary field studies. Can. Ent. 103: 1717–1725.CrossRefGoogle Scholar
Ferrell, G. T. 1973. Weather, logging, and tree growth associated with fir engraver attack scars in white fir. U.S. Dep. Agric. Forest Serv. Res. Pap. PSW-92. 11 pp.Google Scholar
Harris, J. A. 1918. On the osmotic concentration of the tissue fluids of desert Loranthaceae. Mem. Torrey Botan. Club 17: 307–315.Google Scholar
Harris, J. A. 1934. The physio-chemical properties of plant saps in relation to phytogeography. Univ. of Minn. Press. 339 pp.Google Scholar
Hodges, J. D. and Lorio, P. L. Jr., 1971. Comparison of field techniques for measuring moisture stress in large loblolly pines. For. Sci. 17: 220–223.Google Scholar
Scholander, P. F. et al. 1965. Sap pressure in vascular plants. Science 148: 339–346.CrossRefGoogle ScholarPubMed
Scholander, P. F. 1966. Sap concentrations in halophytes and some other plants. Plant Physiol. 41: 529–532.CrossRefGoogle ScholarPubMed
Struble, G. R. 1957. The fir engraver. Rep. U.S. Dep. Agric. Prod. Res., No. 11. 18 p.Google Scholar
Vareschi, V. and Pannier, F.. 1953. Uber der wasserhaushalt tropischer Loranthaceen am naturlichen standort. Phyton 5: 140–152.Google Scholar
Vité, J. P. 1961. The influence of water supply on oleoresin exudation pressure and resistance to bark beetle attack in Pinus ponderosa. Contr. Boyce Thompson Inst. 21: 37–66.Google Scholar
Waring, R. H. and Cleary, B. D.. 1967. Plant moisture stress: evaluation by pressure bomb. Science 155: 1248–1254.CrossRefGoogle ScholarPubMed