Index Catalog // ScholarsArchive@OSU

The life history of the salmon poisoning fluke Troglotrema salmincola (Chapin)

Creator:: Bennington, Elwin Everrett
Resource Type:: Dissertation
Full Text:: as a result of the invasion. Meta- cercariae encyst in about a day in the fish and require about 10

Oil sprays to prevent the spread of bean yellow mosaic virus (BYMV) by aphids

Creator:: Vargas, Timothy Carl
Abstract:: The influence of oil sprays on the field spread of the aphid-borne bean yellow mosaic virus (BYMV) in bean was studied in 1972 and 1973. Oil sprays failed to significantly reduce virus spread in the 1972 BYMV experiment. However, the data did suggest that the efficiency of the oil sprays...
Resource Type:: Masters Thesis
Full Text:: treatments were exposed for an excessive length of time to the gladioli or primary virus reservoir. As a

Factors affecting aphid transmission of bean yellow mosaic virus

Creator:: Adlerz, W. C. (Warren Clifford)
Resource Type:: Dissertation
Full Text:: the rate of virus trans- mission br an insect may change as different species or var- ieties of

The toxic effects of ronnel fed to rate for the control of Xenopsylla cheopis (Rothsch.) (Siphonaptera, Pulicidae)

Creator:: O'Berg, Allan Gillis
Resource Type:: Masters Thesis
Full Text:: . Theefect of ronnel administered to rats as oral drenches at rates of mliii- grams per kilogram of body

Epidemiological implications of sporozoite aggregation in malaria vectors

Creator:: Li, Xiaohong, 1963-
Abstract:: This study describes and quantifies some microprocesses of malaria transmission including blood vessel location by Anopheles stephensi and sporozoites delivery of An. stephensi infected by Plasmodium berghei. The study models the effects of malaria parasite-induced changes in probing behavior and mosquito mortality on disease transmisson. Finally, host, vector, and parasitological...
Resource Type:: Dissertation
Full Text:: in northern regions. Incidentally, the perception of malaria as a tropical disease is a 20th

The possibility of inter-transmission of tulip mosaic and iris mosaic by insect vectors, especially aphids

Creator:: Whitaker, William Carey
Resource Type:: Masters Thesis
Full Text:: has been raised as to whether the mosaic disease affecting one of these plants is the saine as

Aphid transmission of three strains of cucumber mosaic virus

Creator:: Nelson, Robert Leroy
Resource Type:: Masters Thesis
Full Text:: •. Another disease of celery caused by a cucumber moaa1c virus is that known 1n Calltornia as celery calico

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of

Factors Affecting the Efficacy of Depuration for Decreasing Vibrio parahaemolyticus Contamination in Pacific Oysters (Crassostrea gigas)

Creator:: Hou, Yishu
Abstract:: Vibrio parahaemolyticus is a foodborne pathogen recognized as the leading cause of acute gastroenteritis associated with consumption of raw and undercooked seafood, particularly raw oysters, with major symptoms of nausea, vomiting, abdominal cramps and diarrhea. It is estimated that 45,000 cases of V. parahaemolyticus infection occur each year in the...
Resource Type:: Masters Thesis
Full Text:: recognized as a cause of foodborne disease after an outbreak in Osaka, Japan (Daniels et al., 2000). In the

Influence of host anemia on blood-feeding rate and egg production of Aedes aegypti (L.) (Diptera : Culicidae)

Creator:: Shieh, Jong-Neng
Abstract:: I tested a theoretical model proposing that anemia favors transmission of blood-borne parasites to vectors by accelerating the blood-feeding rate. Using Aedes aegypti, the yellow fever mosquito, initially, I was not able to confirm this phenomenon either in an artificial or a live system; anemia did not correlate with blood-feeding...
Resource Type:: Masters Thesis
Full Text:: the number of secondary disease cases arising from one primary disease case introduced into a human

Salivation and engorgement parameters of sucking insect vectors : implications in pathogen transmission

Creator:: Shieh, Jong-neng
Abstract:: The probing behavior and feeding activity of green peach aphid, Myzus persicae Sulzer, on Bacillus thuringiensis ssp. tenebrionis- transgenic potatoes, insecticide treated potatoes, and host plants with different preference were electronically monitored. I found that first, transgenic potatoes had no effect on green peach aphid probing suggesting that transmission of...
Resource Type:: Dissertation
Full Text:: transmit are saliva-borne. As a consequence, mosquitoes and aphids not surprisingly share many traits of

The transmission of bean yellow mosaic virus by some strains of the aphid Myzus persicae (Sulzer)

Creator:: Carpenter, Gene Paul
Resource Type:: Masters Thesis
Full Text:: genetic variation in the ability of aphids to transmit a non-persistent virus, such as bean yellow

Interactions of Amphorophora agathonica Hottes with raspberry viruses and resistant red and black raspberry

Creator:: Lightle, Danielle
Abstract:: In recent years, red raspberry production in Washington and British Columbia has been severely limited by a newly emerged virus complex that causes symptoms of crumbly fruit. The complex is comprised of three viruses: Raspberry bushy dwarf virus (RBDV), Raspberry leaf mottle virus (RLMV) and Raspberry latent virus (RpLV). Both...
Resource Type:: Dissertation
Full Text:: shows that in the Pacific Northwest, the disease is caused by a complex of RBDV with two additional

West Nile virus : forecasting models for a resurging vector-borne disease in Arizona, U.S.A.

Creator:: Roldan, Josiah Javier
Abstract:: West Nile Virus (WNV), a vector-borne disease continues to be a serious threat to public health in the United States, particularly in the Southwest region. While all the states in the U.S. experienced a decreasing trend of WNV disease in 2010, the state of Arizona experienced a sharp increase from...
Resource Type:: Dissertation
Full Text:: resources. Disease registries such as the CDC's ArboNET, plays an important role in the surveillance of

Rubus viruses in British Columbia and their relationship with the aphid vector Amphorophora rubi Kaltenbach

Creator:: Stace-Smith, Richard, 1924-
Resource Type:: Dissertation
Full Text:: the viruses that cause leaf curl disease (as described in .&merica) and one or more of the mosaic

Examining parameters of vectorial capacity for mosquitoes associated with stormwater catch basins in Corvallis, Oregon

Creator:: Townzen, Jill S.
Abstract:: This research examines two of parameters of vectorial capacity for mosquitoes associated with catch basins in Corvallis, Oregon. The parameters of interest were determining 1) abundance of the mosquito species associated with the catch basins and 2) feeding patterns of local mosquito species. Three species of mosquitoes were collected from...
Resource Type:: Dissertation
Full Text:: ………………………………………………….. 15 2 CHARACTERIZATION OF STORMWATER CATCH BASINS AS HABITAT FOR IMMATURE MOSQUITOES IN

Non-spatial and spatial models for multi-host pathogen spread in competing species : applications to barley yellow dwarf virus and rinderpest

Creator:: Manore, Carrie Anna
Abstract:: Modeling and analyzing the combined effects of disease and population dynamics is important in understanding the effects of mechanisms such as pathogen transmission and direct competition between host species on the distribution and abundance of different species in an ecological community. Mathematical analysis of such models in a spatially explicit...
Resource Type:: Dissertation
Full Text:: disease and population dynamics is important in understanding the effects of mechanisms such as pathogen

Disease invasion dynamics : brucellosis and tuberculosis in African buffalo (Syncerus caffer)

Creator:: Gorsich, Erin E.
Abstract:: Emerging infectious diseases in wild animals threaten global biodiversity as well as domestic animal and human health. Their unprecedented increase in conjunction with anthropogenically induced range shifts of endemic pathogens exposes hosts to novel parasite combinations, lending urgency to research on disease dynamics in wildlife systems. In natural populations, hosts...
Resource Type:: Dissertation
Full Text:: , and disease dynamics. Specifically, I examined the role of two intestinal parasites, coccidia and

Hidden dynamics : community ecology and costs of parasite infection in African buffalo (Syncerus caffer)

Creator:: Henrichs, Brian
Abstract:: Most wild animals are concurrently infected with multiple parasite species for most of their lives. These parasite species assemble into rich and diverse communities, with parasites using host tissues for growth and reproduction as well as evolving strategies to evade the host immune system. The net effect of these ecological...
Resource Type:: Masters Thesis
Full Text:: effect of these ecological interactions determine disease severity, transmission, host susceptibility

Wildlife Health in Managed Forests : Immunity and Infectious Diseases in Wild Rodents of Oregon

Creator:: Hanselmann, Rhea
Abstract:: With continual and worldwide human population growth, our impact on the natural environment expands and intensifies every day. We consume natural resources, burn fossil fuels, and release toxic compounds into the air, water, and earth. We build roads that fragment the landscape, construct new settlements, and develop agricultural lands in...
Resource Type:: Dissertation
Full Text:: consequences of our actions, we still lack a profound understanding of just as many of the corollaries of the

Rift Valley fever in African buffalo (Syncerus caffer) : basic epidemiology and the role of bovine tuberculosis coinfection

Creator:: Beechler, Brianna
Abstract:: Rift Valley fever (RVF) is a mosquito-borne zoonotic viral disease native to the African continent. Outbreaks tend to occur in the wet seasons, and can affect numerous mammalian species including African buffalo. It is debated how the virus survives the inter-epidemic period when it is not detected in mammalian populations,...
Resource Type:: Dissertation
Full Text:: , BTB – despite the fact that buffalo act as hosts for a multitude of pathogens. Fundamental theory in

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