Index Catalog // ScholarsArchive@OSU

Genetic and phenotypic variation associated with the resistance gene SOD1 in Biomphalaria glabrata, an important intermediate host of Schistosomiasis

Creator:: Bonner, Kaitlin M.
Abstract:: Schistosomiasis afflicts 200 million people and is responsible for 200,000 deaths per year. The infection is caused by a digenean trematode in the genus Schistosoma. The parasite must cycle through both a vertebrate (human) and invertebrate (snail) host to complete the life cycle. My dissertation focuses on the genetic mechanisms...
Resource Type:: Dissertation
Full Text:: Intermediate Host of Schistosomiasis Abstract approved: Michael S. Blouin Schistosomiasis afflicts 200

Adaptive diversity and divergence at frog antimicrobial peptide loci

Creator:: Tennessen, Jacob A.
Abstract:: In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
Resource Type:: Dissertation
Full Text:: Michael S. Blouin In this dissertation I study evolutionary patterns at genes encoding antimicrobial

Modulation of respiratory burst activity of trout (Oncorhynchus mykiss) phagocytic cells

Creator:: Galvan, Irja S.
Abstract:: In a comparison of the mammalian and fish immune systems many similarities and differences are found. While most of the differences occur in the acquired or lymphoid arm of immunity, the nonlymphoid immune systems of fish and mammals share many similarities. For instance, both animal groups use phagocytic neutrophils and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Ida S. Galvan for the degree of

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Creator:: Gervasi, Stephanie S.
Abstract:: Emerging infectious diseases are increasing globally and are a threat to human, wildlife, and ecosystem health. The emerging fungal pathogen, Batrachochytrium dendrobatidis (Bd), or amphibian chytrid fungus, is associated with worldwide amphibian population declines and extinctions. Bd has been found on every continent where amphibians exist and has been documented...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Stephanie S. Gervasi for the degree of Doctor of Philosophy in

Patterns, causes, and consequences of clustering of individual territories of the threespot damselfish, Stegastes planifrons

Creator:: Meadows, Dwayne W.
Abstract:: The threespot damselfish, Stegastes planifrons, maintains individual territories that are clustered on coral patch reefs. My objective was to understand the effects of territory clustering on behavior and fitness. Fish with territories in the center of a cluster had (relative to edge fish): higher mating success (number of eggs), higher...
Resource Type:: Dissertation
Full Text:: of Teleost Fishes. Johns Hopkins University Press, Baltimore. Rayor, L. S. and G. W. Uetz. 1990

The maintenance and stability of the shell color polymorphism in the rocky intertidal gastropod Thais (Nucella) emarginata

Creator:: Davis, Charles Lee
Abstract:: Thais (Nucella) emarginata is a common predatory gastropod of the rocky intertidal system of western North America. It is usually found at low tide on top of its sedentary prey, barnacles and mussels. Thais is also highly polymorphic for shell color, and breeding of isolated females has shown that the...
Resource Type:: Dissertation
Full Text:: , S, or W), Thais density, or Thais distribution. One pattern did emerge from this investigation. Six

Natural history and evolution of a color polymorphism in Rana pipiens, the northern leopard frog

Creator:: Hoffman, Eric A.
Abstract:: A primary goal of population genetics is to identify the role of microevolutionary forces in producing observed patterns of molecular and phenotypic variation. I conducted four studies in the northern leopard frog, Rana pipiens, to determine just how mutation, migration, genetic drift, and selection influenced, genetic structure of mitochondrial DNA...
Resource Type:: Dissertation
Full Text:: Color Polymorphism in Rana pipiens. the Northern Leopard Frog. Abstract approved: Michael S. Blouin A

Dynamics of enzyme polymorphism in a natural population of the boreal toad, Bufo boreas boreas Baird and Girard : evidence of natural selection via differential mortality in early life history stages

Creator:: Samollow, Paul B.
Resource Type:: Dissertation
Full Text:: -- Peter S. Dawson The genetic effects of heavy mortality during early life history stages in a natural

Density-dependent selection and the maintenance of genetic variation in life-history attributes : evidence from tribolium castaneum and t. confusum in temporally heterogeneous environments

Creator:: Riddle, Russel R.
Resource Type:: Dissertation
Full Text:: : Peter S. Dawson Density-dependent selection was studied in laboratory popula- tions of two species of

Population genetics of ranid frogs : investigating effective population size and gene flow

Creator:: Phillipsen, Ivan C.
Abstract:: This dissertation focuses on the evolutionary forces of genetic drift and gene flow in frog populations. The balance of these two forces and the force of mutation largely determine the amount of neutral genetic variation within populations as well as the degree of genetic similarity among populations. The stochastic evolutionary...
Resource Type:: Dissertation
Full Text:: Gene Flow Abstract approved: Michael S. Blouin This dissertation focuses on

ScholarsArchive@OSU

Genetic and phenotypic variation associated with the resistance gene SOD1 in Biomphalaria glabrata, an important intermediate host of Schistosomiasis

Adaptive diversity and divergence at frog antimicrobial peptide loci

Modulation of respiratory burst activity of trout (Oncorhynchus mykiss) phagocytic cells

All hosts are not created equal : variation in amphibian responses to an emerging fungal pathogen and why it matters

Patterns, causes, and consequences of clustering of individual territories of the threespot damselfish, Stegastes planifrons

The maintenance and stability of the shell color polymorphism in the rocky intertidal gastropod Thais (Nucella) emarginata

Natural history and evolution of a color polymorphism in Rana pipiens, the northern leopard frog

Dynamics of enzyme polymorphism in a natural population of the boreal toad, Bufo boreas boreas Baird and Girard : evidence of natural selection via differential mortality in early life history stages

Density-dependent selection and the maintenance of genetic variation in life-history attributes : evidence from tribolium castaneum and t. confusum in temporally heterogeneous environments

Population genetics of ranid frogs : investigating effective population size and gene flow

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