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Systematics and host associations of Ormyrus species (Hymenoptera: Chalcidoidea)

Creator:: Hanson, Paul E.
Abstract:: The genus Ormyrus has a worldwide distribution and comprises about sixty recognized species. The higher taxonomic relationships of the genus are uncertain, as evidenced by its placement in the families Ormyridae, Pteromalidae, or Torymidae. Here, the genus is described in detail and a preliminary catalog of the world species is...
Resource Type:: Dissertation
Full Text:: (Hymenoptera: Chalcidoidea) AN ABSTRACT OF THE THESIS OF Paul E. Hanson for the degree of Doctor of

A three-trophic-level perspective on factors influencing herbivore abundance on collard

Creator:: McIver, James D.
Abstract:: The influence of natural enemies and plant apparency in determining the abundance of the cabbage aphid Brevicoryne brassicae L. and the imported cabbageworm Pieris rapae L. was examined on collards grown in a collard monoculture and in a collard-alfalfa biculture. This design was used to examine the factors affecting collardherbivore...
Resource Type:: Dissertation
Full Text:: and Coccinella trifasciata L. and E. dentosa in the monoculture. Serological analysis and natural

The influence of light intensity on the phytochemistry of Chrysolepis chrysophylla (Fagaceae) and the relationship to the herbivory of Habrodais grunus herri (Lycaenidae)

Creator:: Bowden, Richard I.
Abstract:: Defensive chemical and nutritive quality of young leaves were measured for 72 individual trees of Chrysolepis [Castanopsis] chrysophylla in conjunction with light intensities of two different stand types and population numbers of Habrodais grunus herri in the Cascade mountains of Oregon. Leaves were collected in the spring and leaf characteristics...
Resource Type:: Masters Thesis
Full Text:: all who assisted in this effort. First and foremost I express esteemed gratitude to Dr. Jeffrey C

Biology of the yellowjacket parasitoid Bareogonalos canadensis (Harrington) (Hymenoptera: Trigonalyidae)

Creator:: Carmean, David
Abstract:: The known biology of Bareogonalos canadensis (Harrington) is based on literature records of six collections from three areas in the Pacific Northwest. The objective of this study was to obtain fundamental knowledge on the biology of B. canadensis, especially its distribution, abundance, and host species, as well as its potential...
Resource Type:: Masters Thesis
Full Text:: Lycogaster (10) N, C Am, As I,E Lycogastroides (3) Africa Lycogonalos (1) Asia Stygnoaonalos (1) C America

Butterflies of the H.J. Andrews Experimental Forest : biological inventory and ecological analysis

Creator:: Ross, Dana N. R.
Abstract:: A biological inventory of the butterflies of the H. J. Andrews Experimental Forest [HJA] in Linn/Lane County, Oregon was conducted during 1994 and 1995. It was the first comprehensive survey of HJA butterflies for the site and serves as a baseline for future butterfly research. A detailed ecological account is...
Resource Type:: Masters Thesis
Full Text:: thanks go to Dr. Jeffrey C. Miller for his guidance, insight and enthusiasm towards my work, as well as

Host suitability studies of Douglas-fir and white alder to the gypsy moth

Creator:: Joseph, Gladwin
Abstract:: Douglas-fir, Pseudotsuga menziesii and white alder, Alnus rhombifolia, species that are prevalent in the Pacific Northwest, were fed to larvae of the gypsy moth, Lymantria dispar L. Gypsy moth larvae from different familial lines (egg masses) from a single geographic population were evaluated on these hosts. The larvae were fed...
Resource Type:: Masters Thesis
Full Text:: White Alder to the Gypsy Moth Abstract Redacted for privacy approved: / f /Jeffrey C.Miller Douglas

Improvement of biological control agents : laboratory selection for fast larval development in the convergent lady beetle, Hippodamia convergens guerin-Méneville (Coleoptera: Coccinellidae)

Creator:: Rodriguez-Saona, Cesar Ramiro
Abstract:: Hippodamia convergens Guerin-Meneville was selected for rapid development through five generations at four constant temperatures (18, 22, 26, and 30°C). Two levels of selection were used: intense and moderate. Differences in developmental rate, survivorship, live adult weight, aphid consumption, adult longevity, and fecundity were measured for both groups and an...
Resource Type:: Masters Thesis
Full Text:: Privacy Redacted for Privacy ACKNOWLEDGEMENT I would like to thank my adviser Dr. Jeffrey Miller

Biology and host relations of Meteorus comunis (Cresson)

Creator:: West, Kenneth John
Abstract:: Fifteen species of Noctuidae (Lepidoptera) were collected in alfalfa and peppermint in western Oregon. Seven of these species were hosts for the braconid parasitoid Meteorus communis. The most frequently parasitized (percent) species were Agrotis ipsilon (35.3), Dargida procincta (15.0), and Peridroma saucia (6.9). Other species parasitized were Autographa californica (3.8)...
Resource Type:: Masters Thesis
Full Text:: Most of all, I wish to thank Dr. Jeffrey C. Miller for his interest, encouragement and support

Ground dwelling beetles in early and late successional forests in the western Cascades of Oregon

Creator:: Heyborne, William H.
Abstract:: The effects of forest cutting on forested systems and the biotic components of those systems has been at the forefront of scientific research. The inventory and monitoring of biodiversity is one technique used for measuring the effects of forest management. Because bioinventory studies are expensive, indicator species are often sought...
Resource Type:: Masters Thesis
Full Text:: Early and Late Successional Forests in the Western Cascades of Oregon. Abstract approved: Jeffrey C

Host exploitation by Dinocampus Coccinellae (Schrank) [Hymenoptera: Braconidae]

Creator:: Belnavis, Diane Lyn
Abstract:: Ecological relationships between D. coccinellae and its coccinellid hosts were examined in the Willamette Valley, Oregon, in 1982. The distribution and relative abundance of seven species of coccinellids from eight collecting sites were monitored to determine percent parasitism by D. coccinellae on a spatial and temporal basis. Host size and...
Resource Type:: Masters Thesis
Full Text:: PARASITIZED 600 - 500 7 1 400 300 200 100 e T CT HC CC CU AB CP SPECIES HS Figure 2. Number of

ScholarsArchive@OSU

Systematics and host associations of Ormyrus species (Hymenoptera: Chalcidoidea)

A three-trophic-level perspective on factors influencing herbivore abundance on collard

The influence of light intensity on the phytochemistry of Chrysolepis chrysophylla (Fagaceae) and the relationship to the herbivory of Habrodais grunus herri (Lycaenidae)

Biology of the yellowjacket parasitoid Bareogonalos canadensis (Harrington) (Hymenoptera: Trigonalyidae)

Butterflies of the H.J. Andrews Experimental Forest : biological inventory and ecological analysis

Host suitability studies of Douglas-fir and white alder to the gypsy moth

Improvement of biological control agents : laboratory selection for fast larval development in the convergent lady beetle, Hippodamia convergens guerin-Méneville (Coleoptera: Coccinellidae)

Biology and host relations of Meteorus comunis (Cresson)

Ground dwelling beetles in early and late successional forests in the western Cascades of Oregon

Host exploitation by Dinocampus Coccinellae (Schrank) [Hymenoptera: Braconidae]

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