Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Contact exposure"”.
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Chronic contact exposure to realistic soil concentrations of a neonicotinoid insecticide represents a potentially important and unexplored route of exposure for ground nesting bees
… important, yet under explored, route of exposure for bees, the majority of which nest in the ground. The aims of this thesis are to examine this route of exposure and to determine potential sublethal effects. In chapter 1, I explore the effects of chronic contact exposure during to …
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Immune Response of Swine to Porcine Reproductive and Respiratory Syndrome Virus: Laboratory and Field Studies
… of this problem. These include utilizing contact exposure to inoculated pigs as a strategy for acclimatization of pigs to autogenous (endemic) PRRSv strains; comparing protection against autogenous and heterogenous strains to better understand cross protection; and discovering T cell …
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Factors Associated with Pollinator Foraging and Floral Morphology of Lawn Weeds
… management practices that minimize pollinator exposure to harmful pesticides. Many common weeds in managed turfgrass systems attract honey bees (Apis mellifera L.) and other pollinators, increasing their risk of contact with insecticide residues. This dissertation project explored the potential …
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Toxicity of Formulated Insecticide Mixtures to Apis and Non-Apis Bees
… to a lesser extent non-Apis bees. However, the contact toxicity of formulated premix insecticides containing multiple active ingredients to bees has not been thoroughly assessed. To address this void, laboratory studies simulating exposure to four premix insecticides under different …
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Social evolution : opinions and behaviors in face-to-face networks
Exposure to new ideas and opinions, and their diffusion within social networks, are important questions in education, business, and government. However until recently there has been no method to automatically capture fine-grained face-to-face interactions between people, to better model the …
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Death by a thousand cuts: the role of pesticides, predators, and habitat patch characteristics on wild bee and insect communities
… bee health currently ignore the role of chronic contact with contaminated soils. In Chapter 1, I assess the sublethal effects of chronic contact exposure to realistic soil concentrations of imidacloprid - a commonly used neonicotinoid pesticide - during the immature life stages on adult movement …