Index Catalog // ScholarsArchive@OSU

A contribution to the biology of the Pseudohylesinus nebulosus (LeConte) (Coleoptera:Scolytidae), especially in relation to the moisture stress of its host, Douglas-fir

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:: , cell division, etc., are discussed. Only trees under PMS levels indicative of physiological

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

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:: Italy (Del Guercio, 1931; Russo, 1932); an unidentified desert shrub in Mexico (S. L. Wood, 1956

Studies on the olfactory behavior of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins

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:: deleterious effects of insecticides upon fish and game as well as on rnan hirnself has spurred. research in

Some environmental factors affecting development and emergence of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), in the laboratory

Creator:: Ryan, Roger B.
Resource Type:: Masters Thesis
Full Text:: ............. . . .......................... 8. Temreratures for the months September 1956 through l4rrth 1957 s recorded nt the 0rego Stte

The effect of cold temperatures on the length of diapause of the spruce budworm (Choristoneura fumiferana (Clem.)

Creator:: Fellin, David G.
Resource Type:: Masters Thesis
Full Text:: . Parker, Chief, Division of Forest Insect heseareh, for helpful sugges.- tions during the

Certain biotic factors influencing the invasion and survival of the Douglas-fir beetle Dendroctonus pseudotsugae Hopkins (Coleoptera : scolytidae) in fallen trees

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:: Rudinsky ( I40, p. 165) quote an unpublished report by Bedard, oLd fernales "are capable of laying

Some environmental factors influencing rearing of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae) under laboratory conditions

Creator:: Pitman, Gary Boyd
Resource Type:: Masters Thesis
Full Text:: , Chief, Division of Forest Insect Research, Pacific Northwest Forest and Range Experiment Station, for

Certain factors affecting colonization of Ponderosa pine by Ips confusus (Leconte) (Coleoptera : Scolytidae)

Creator:: Pitman, Gary Boyd
Abstract:: The purpose of this study was to study in some detail host factors which influence the population dynamics of bark beetle. The dissertation objectives were to ascertain the applicability of utilizing osmotic pressure values and relative turgidity values of phloem tissue as indicators which reflect upon the physiological profile of...
Resource Type:: Dissertation
Full Text:: the past five decades, a single species Of Scolytidae has accounted for an annual loss of

Studies on the flight behavior of Ips confusus (Lec.) (Coleoptera : Scolytidae) in response to attractants

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

The effect of competition on the population dynamics of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., in Oregon

Creator:: Schmitz, Richard Franklin
Abstract:: The effect of competition on the brood survival of the Douglas fir beetle Dendroctonus pseudotsugae Hopkins, in down or windthrown Douglas-fir Pseudotsuga menziesii (Mirb.) Franco was studied in the field and the laboratory. The investigation of the role of competition in the population dynamics of the beetle had four objectives:...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A contribution to the biology of the Pseudohylesinus nebulosus (LeConte) (Coleoptera:Scolytidae), especially in relation to the moisture stress of its host, Douglas-fir

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Studies on the olfactory behavior of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins

Some environmental factors affecting development and emergence of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), in the laboratory

The effect of cold temperatures on the length of diapause of the spruce budworm (Choristoneura fumiferana (Clem.)

Certain biotic factors influencing the invasion and survival of the Douglas-fir beetle Dendroctonus pseudotsugae Hopkins (Coleoptera : scolytidae) in fallen trees

Some environmental factors influencing rearing of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae) under laboratory conditions

Certain factors affecting colonization of Ponderosa pine by Ips confusus (Leconte) (Coleoptera : Scolytidae)

Studies on the flight behavior of Ips confusus (Lec.) (Coleoptera : Scolytidae) in response to attractants

The effect of competition on the population dynamics of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., in Oregon

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