Index Catalog // ScholarsArchive@OSU

Effects of genetic drift, natural selection, and population connectivity on adaptive-linked genetic diversity of desert bighorn sheep

Creator:: Nickerson, Brandon Scott
Abstract:: The amount and distribution of neutral and adaptive genetic diversity are often assumed to follow similar patterns. However, natural selection on adaptive loci may cause divergence from patterns observed for loci which are only influenced by selectively neutral processes such as genetic drift. The interaction between selection and neutral processes...
Resource Type:: Masters Thesis
Full Text:: Anna Jolles and Marjorie Matocq, whose insights helped improve the quality of my research, and to

Walrus Vibrissae: Determining Growth Rate, Indication of Niche Variability, and Implications for Climate Resiliency

Creator:: Blackfield, Danielle
Abstract:: Pacific walrus (Odobenus rosmarus) are particularly vulnerable to the impacts of climate change due to the high reliance on sea ice for safety, transport, and social behaviors. Additionally, the walrus diet consists of predominantly bivalves, whose populations are in decline as a result of ocean acidification. We first determined the...
Resource Type:: Masters Thesis

Introduction of a Mathematical Model to Characterize Relative Risk of Snakebite Envenoming, a Neglected Tropical Disease

Creator:: Kim, Soyeon
Abstract:: Snakebite envenoming is a neglected tropical disease that has received increased research attention in the past few years. However, snakebite prevalence and impact in India has been a neglected area of study, despite the high disease burden in this region. Both qualitative and quantitative approaches to studying snakebite processes are...
Resource Type:: Honors College Thesis
Full Text:: , Committee Member, representing Integrative Biology Anna Jolles, Committee Member, representing Biomedical

Modeling the Dynamics of Vector–host Interactions in Avian Communities: Eastern Equine Encephalitis Virus as a Model System

Creator:: Muller, Timothy
Abstract:: Understanding the dynamics of seasonal epizootics of vector-borne pathogens infecting multiple host species presents several challenges. The transmission potential of competent hosts depends on factors influencing the contact rate between hosts and vectors. Feeding preferences of vectors can determine which host species drive the prevalence of infection throughout the overall...
Resource Type:: Masters Thesis
Full Text:: committee: Dr. Anna Jolles, Dr. Vrushali Bokil, and Dr. Patrick De Leenheer, for their insightful comments

Ontogenetic Shifts in Disease Response in Native and Invasive Anuran Species

Creator:: Urbina Gonzalez, Jenny Cecilia
Abstract:: This dissertation presents a different approach to understanding how amphibians are responding to disease through ontogeny. Although numerous efforts have been conducted to understand host responses to the fungus Batrachochytrium dendrobatidis (Bd), studies have been restricted to distinct developmental stages. This dissertation provides information on host response to Bd across...
Resource Type:: Dissertation
Full Text:: their assistance. Anna Jolles provided feedback that improved my methods and for her amazing ideas to

Using DNA metabarcoding to describe biodiversity and disease dynamics

Creator:: Massey, Aimee L.
Abstract:: Land-use change, particularly in the form of the conversion of primary forest to forest-matrix systems, alters species communities and species interactions. Describing these often complex and nuanced species responses is one of the great challenges in ecology. Another complementary challenge is finding and using the most efficient means for collecting...
Resource Type:: Dissertation
Full Text:: Sharpton, and Anna Jolles. Your constructive feedback and guidance helped make my research better. The

Interactions among Invasive Pacific Red Lionfish, Fish Parasites, and Cleaning Mutualisms Native to Atlantic Coral Reefs

Creator:: Tuttle, Lillian J.
Abstract:: What makes invasive species successful, and how do they affect native populations and communities? I addressed these key questions in the context of the invasion of Atlantic coral reefs by Pacific red lionfish (Pterois volitans). To assess the role of parasites in contributing to the success of this invasion, I...
Resource Type:: Dissertation

Disentangling the Biotic and Abiotic Drivers of the Amphibian Disease Chytridiomycosis

Creator:: Bradley, Paul W.
Abstract:: The ongoing worldwide loss of biodiversity has been described as a "biodiversity crisis," "the Anthropocene defaunation," and alternatively "an extinction spasm." More recently, many scientists have come to the conclusion that we are witnesses to Earth's sixth major mass extinction event, which has the potential to fundamentally alter basic ecological...
Resource Type:: Dissertation
Full Text:: intelligent and deepest thinkers I have ever encountered. Dr. Anna Jolles works on a completely different

Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

Creator:: Xie, Yang
Abstract:: Emerging infectious diseases impact both human and wildlife populations. Infectious agents, in particular the aquatic fungus Batrachochytrium dendrobatidis (chytrid), have an influential role in driving global amphibian population declines. The emergence of the chytrid fungus has aspects of both geographic spread as well as climate shifts altering environmental conditions and...
Resource Type:: Dissertation

The ecology of parasite interactions within Chinook salmon

Creator:: Hurst, Charlene N.
Abstract:: The within-host interactions that can occur as a result of mixed infections in wildlife likely influence the outcome of an infection. We investigated the infection frequency and outcome as well as the potential mechanisms regulating mixed infections with two Ceratonova shasta genotypes within the Chinook salmon host. Previous research in...
Resource Type:: Dissertation
Full Text:: appreciation to my dissertation committee; Dr. Jerri Bartholomew, Dr. Anna Jolles, Dr. Cynthia Ocamb, Dr. Kym

ScholarsArchive@OSU

Effects of genetic drift, natural selection, and population connectivity on adaptive-linked genetic diversity of desert bighorn sheep

Walrus Vibrissae: Determining Growth Rate, Indication of Niche Variability, and Implications for Climate Resiliency

Introduction of a Mathematical Model to Characterize Relative Risk of Snakebite Envenoming, a Neglected Tropical Disease

Modeling the Dynamics of Vector–host Interactions in Avian Communities: Eastern Equine Encephalitis Virus as a Model System

Ontogenetic Shifts in Disease Response in Native and Invasive Anuran Species

Using DNA metabarcoding to describe biodiversity and disease dynamics

Interactions among Invasive Pacific Red Lionfish, Fish Parasites, and Cleaning Mutualisms Native to Atlantic Coral Reefs

Disentangling the Biotic and Abiotic Drivers of the Amphibian Disease Chytridiomycosis

Complexity in host-pathogen dynamics : dispersal uncertainties, metapopulation persistence and the role of a changing climate

The ecology of parasite interactions within Chinook salmon

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