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Creator:: Atkins, Michael D.
Resource Type:: Dissertation
Full Text:: fllght thus nay be involved ta behavloral changes, rn the Douglas-fir beetle there seens to be a oo

Creator:: Hendrickson, William Henry
Abstract:: Factors considered were phloem moisture, sour-phloem (which may be furthered by the presence of ample phloem moisture), oleoresin of the host, and the presence of unmated female beetles in suitable host material. Levels of phloem moisture present in variously prepared logs in the field ranged from about 100 to upwards...
Resource Type:: Dissertation
Full Text:: Certain Biotic Factors Influencing the Invasion and Survival of the Douglas-Fir Beetle Derulros.llonus

Creator:: Fitzgerald, T. D. (Terrence D.), 1941-
Abstract:: The bionomics of Medetera aldrichii Wheeler (Diptera: Dolichopodidae), a predator of the Douglas-fir beetle (Dendroctonus pseudotsugae Hopkins (Coleoptera:Scolytidae)), was investigated in western Oregon. The predator pupated in host galleries proximal to bark beetle ventilation holes. The tendency of prepupal larvae to form pupal cells near illuminated areas in a photo-response...
Resource Type:: Dissertation
Full Text:: The bionomics of Medetera aldrichii Wheeler (Diptera: Dolichopodidae), a predator of the Douglas-fir

Creator:: Howse, Gordon M.
Resource Type:: Dissertation
Full Text:: ANALYSIS OF DOUGLAS-FIR BEETLE (DENDROCTONUS PSEUDOTSUGAE HOPK.) POPULATIONS Redacted for Privacy W. P

Creator:: Gara, R. I. (Robert Imre), 1931-
Abstract:: The flight behavior of Ips confusus (Lec.) was primarily studied under field conditions, but augmented with complementary laboratory studies whenever feasible. The experiments were mostly conducted in areas of endemic population levels, but also under epidemic and prairie conditions. The techniques and devices used in marking, releasing, attracting, and trapping...
Resource Type:: Dissertation
Full Text:: ) found, while testing the attractiveness of the ter ... pene pinene on two scolytid species, that the

Creator:: Jantz, Orlo Kenneth
Abstract:: Behavioral responses exhibited by the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, to various attractant sources were investigated under both laboratory and field conditions. Tests were designed to observe olfactory responses. Results were correlated and compared with collections from sampling nets and with emergence patterns. Field data were collected during the flight...
Resource Type:: Dissertation
Full Text:: ON THE OLFACTORY BEHAVIOR OF THE DOUGLAS-FIR BEETLE, DENDROCTONUS PSEUDOTSUGAE HOPKINS Abstract

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