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Aspects of the field and developmental biology of a Apanteles yakutatensis, a parasitoid of Autographa californica

Creator:: Madar, Robert John
Abstract:: Behavioral and ecological aspects of the field and developmental biology of Apanteles yakutatensis (Ashm.), a primary larval parasite of the alfalfa looper, Autographa californica (Speyer), were investigated in 1980 and 1981. Populations of A. yakutatensis were found in commercial peppermint, alfalfa and crimson clover fields involving two areas (Willamette Valley,...
Resource Type:: Masters Thesis
Full Text:: Aspects of the field and developmental biology of a

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:: A Three-Trophic-Level Perspective on Factors Influencing

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:: were monitored to determine percent parasitism by D. coccinellae on a spatial and temporal basis

Temperature-dependent development and field observations of some western Oregon coccinellids (Coleoptera: Coccinellidae)

Creator:: La Mana, Michael Louis
Abstract:: The recent colonization of Oregon by an exotic, intentionally introduced coccinellid, Harmonia axyridis, was the basis for lab and field research into lady beetle developmental biology and community composition. Harmonia axyridis was the dominant coccinellid in an arboreal habitat, and comprised over 70% of all lady beetles, and 82% of...
Resource Type:: Masters Thesis

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:: . Individuals from the intense selected line had a lower developmental threshold (11.3°C) than the

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:: genus Ormyrus has a worldwide distribution and comprises about sixty recognized species. The higher

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:: Experimental Forest: Biological Inventory and Ecological Analysis Abstract approved: A biological inventory

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:: pyramidoides (10.0) and Xylena nupara (5.0). Parasitism of P. saucia, D. procincta and A. californica was

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 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

ScholarsArchive@OSU

Aspects of the field and developmental biology of a Apanteles yakutatensis, a parasitoid of Autographa californica

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

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

Temperature-dependent development and field observations of some western Oregon coccinellids (Coleoptera: Coccinellidae)

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

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

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

Biology and host relations of Meteorus comunis (Cresson)

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

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

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