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Non-target Effects of Biological Control: Ecological Risk of Tyria jacobaeae (Lepidoptera: Erebidae) to Senecio triangularis (Asteraceae) in Western Oregon

Creator:: Rodman, Madison G.
Abstract:: Non-target effects are one of the greatest potential risks of weed biological control programs, and understanding non-target effects of biological control at the population level is crucial for predicting when they will occur and altering the perception of biological control as a whole. In this thesis, we assessed the ecological...
Resource Type:: Masters Thesis
Full Text:: interaction between the introduced biological control agent, the cinnabar moth, and native, non-target plant

Oviposition of the codling moth, Laspeyresia pomonella (L.), on several varieties of apples and pears

Creator:: Gut, Larry J.
Abstract:: Ovipositional behavior of the codling moth, Laspeyresia pomonella (L.), on several varieties of apples and pears grown in the Pacific Northwest was investigated during the spring/summer of 1979. Field studies showed that early in the season more eggs were laid on the Bosc variety than on several other apple and...
Resource Type:: Masters Thesis
Full Text:: total defects, growers try to keep codling moth damage below 1 percent. Dependence on chemical control

Gene expression, genome organization, and evolution of the Orgyia pseudotsugata multicapsid nuclear polyhedrosis virus

Creator:: Leisy, Douglas J.
Abstract:: The genome of the multicapsid nuclear polyhedrosis virus of Orgyia pseudotsugata (OpMNPV) was mapped by examining overlapping Hindlll fragments from cosmid clones which had been constructed from partial Hindlll digests of viral DNA. Five OpMNPV cosmid clones containing fragments encompassing the entire OpMNPV genome were hybridized to blots of DNA...
Resource Type:: Dissertation
Full Text:: INTRODUCTION 1 Literature Review 1 Use of Baculoviruses in Controlling Tussock Moth Populations 1

The commercial propogation and biological studies of two parasites of the codling moth

Creator:: Gillespie, Douglas Grayson
Resource Type:: Masters Thesis
Full Text:: parasites of the codling moth THESIS on The Commercial Propogation and Biological Studies of Two

Responses of males to a pheromone blend of female Oriental fruit moth with and without E8, E10-dodecadien-1-ol, a pheromone component of codling moth (Lepidoptera: Tortricidae)

Creator:: Allred, Darin B.
Abstract:: E8,E10-dodecadien-1-ol, the primary component of the female sex pheromone of codling moth, Cydia pomonella L., has no attraction to male Oriental fruit moth (OFM), C. molesta (Busck). However, this compound when added to the OFM pheromone blend of Z8-dodecenyl acetate (85.5%), E8-dodecenyl acetate (5.5%), and Z8- dodecen -1 -ol (9.0%),...
Resource Type:: Dissertation
Full Text:: Component of Codling Moth (Lepidoptera: Tortricidae) Abstract approved: Brian A. Croft E8,E10-dodecadien

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Creator:: Bajwa, Waheed Ibrahim
Abstract:: The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures of Bacillus thuringiensis-based microbial and selected chemical insecticides was studied under laboratory and field conditions. Joint actions (synergism, additivity and antagonism) of these mixtures were determined for both egg and larval stages. Higher rates of microbial control agents (MCAs),...
Resource Type:: Dissertation
Full Text:: control of codling moth in the field. Diflubenzuron and MCAs had neither adulticidal activity nor long

Detection and characterization of resistance to pesticides in codling moth, Cydia pomonella L. from Oregon

Creator:: Arshad, Muhammad, 1958-
Abstract:: Toxicological studies were carried out to evaluate the susceptibility of codling moth, Cydia pomonella L. to different insecticides. Bioassay procedures for adults and larvae were standardized in terms of posttreatment holding and temperature, age and sex of insects, insecticide formulations and selection of a reference strain. This study detected a...
Resource Type:: Masters Thesis
Full Text:: Figure Page 1. Chemical use patterns to control codling moth in apples and pears in the Pacific

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Creator:: Marti, Santiago Marti
Abstract:: The biology and behavior of the codling moth, Cydia pomonella (L.), was studied to determine factors responsible for differences in susceptibility to moth damage among apple and pear cultivars. In release experiments, codling moth adults were intercepted in significantly greater numbers in host (apple, pear) than in non-host (maple) trees,...
Resource Type:: Dissertation
Full Text:: moth. Many aspects of codling moth biology, ecology, behavior, and control have been intensively

Assessing the safety of weed biological control : a case study of the cinnabar moth Tyria jacobaeae

Creator:: Fuller, Jason L.
Abstract:: The cinnabar moth, Tyria jacobaeae (L.) (Lepidoptera:Arctiidae), was released in 1959 to control the grassland weed tansy ragwort, Senecio jacobaea L. (Asteraceae), despite evidence that caterpillars of this species can feed on native plants within the genera Senecio and Packera. Previous studies confirmed the moth's ability to develop on the...
Resource Type:: Masters Thesis
Full Text:: Biological Control: A Case Study of the Cinnabar Moth Tyriajacobaeae Abstract approved: The cinnabar moth

Seasonality of codling moth, Cydia pomonella L. (Lepidoptera: Olethreutidae) in the Willamette Valley of Oregon : role of photoperiod and temperature

Creator:: Setyobudi, Lilik
Abstract:: The seasonality, relationship of temperature and photoperiod to growth and post-diapause development, and overwintering behavior of codling moth, Cydia pomonella L., (Lepidoptera: Olethreutidae) were studied over a three year (1986-1989) period. The developmental threshold varied from a low of 9.66°C for the second instar to a high of 14.23°C for...
Resource Type:: Dissertation

ScholarsArchive@OSU

Non-target Effects of Biological Control: Ecological Risk of Tyria jacobaeae (Lepidoptera: Erebidae) to Senecio triangularis (Asteraceae) in Western Oregon

Oviposition of the codling moth, Laspeyresia pomonella (L.), on several varieties of apples and pears

Gene expression, genome organization, and evolution of the Orgyia pseudotsugata multicapsid nuclear polyhedrosis virus

The commercial propogation and biological studies of two parasites of the codling moth

Responses of males to a pheromone blend of female Oriental fruit moth with and without E8, E10-dodecadien-1-ol, a pheromone component of codling moth (Lepidoptera: Tortricidae)

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Detection and characterization of resistance to pesticides in codling moth, Cydia pomonella L. from Oregon

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Assessing the safety of weed biological control : a case study of the cinnabar moth Tyria jacobaeae

Seasonality of codling moth, Cydia pomonella L. (Lepidoptera: Olethreutidae) in the Willamette Valley of Oregon : role of photoperiod and temperature

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