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Creator:: Stoszek, Karel Josef
Abstract:: The study (1) describes the life cycle of P. nebulosus, (2) examines stimuli that may cause the beetles to locate brood material, and (3) establishes the relationship between moisture stress in Douglas-fir and colonization by P. nebuZosus.and other meristem insects. (1) Development of P. nebulosus goes through the egg stage,...
Resource Type:: Dissertation
Full Text:: management considerations regarding reduction of damage caused by bark beetles. A Contribution to the

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis
Full Text:: . Julius A. Rudinsky Both Leperisinus oregonus and L. californicus are bark beetle species which emerge

Creator:: Daterman, Gary E.
Abstract:: The study was undertaken to determine the seasonal and diurnal flight patterns of scolytid beetles inhabiting a second growth forest of Douglas-fir (Pseudotsuga menziesii (Mirb.)Franco) in western Oregon. Air temperatures, relative humidity, light intensity, and wind velocities were recorded for evaluation of their influence on flight activity. The insects were...
Resource Type:: Masters Thesis
Full Text:: Diurnal and seasonal flight patterns of bark beetles

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:: INTRODUCTION Bark beetles (Scolytidae) compJ,.ete their entire life cycle inside their host plant with the

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