Index Catalog // ScholarsArchive@OSU

Diverse consumer guilds in intertidal communities of Oregon and the Republic of Panama and their effects on prey assemblages

Creator:: Gaines, Steven D.
Abstract:: Low intertidal communities of Oregon and Panama have many predator and herbivore species. This diversity of consumers is important to the organization of both communities because of qualitative differences among the consumer species in their ability to circumvent specific prey defenses. In Oregon, the red alga Iridaea cordata is protected...
Resource Type:: Dissertation
Full Text:: THE THESIS OF for the degree of Doctor of Philosophy in Zoology presented on September 28, 1982

New perspectives in archosaur biology

Creator:: Harwell, Amy E.
Abstract:: The respiratory and metabolic biology of dinosaurs is poorly, if at all, reflected in the fossil record. By comparing anatomical features of modern taxa that are functionally linked to specific biology with the remains of theropod dinosaurs (Archosauria: Theropoda) and early birds, we may reasonably infer the physiology of long...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Amy E. Harwell for the degree of Doctor of Philosophy in

Temperature stress, gene expression, and innate immunity at the onset of cnidarian-dinoflagellate symbiosis

Creator:: Schnitzler, Christine E.
Abstract:: The intracellular mutualism between cnidarians and photosynthetic dinoflagellates (genus Symbiodinium) is responsible for the physical and trophic structure of diverse coral reef ecosystems. This relationship, based on nutrient exchange, allows for high productivity in tropical waters, which are generally nutrient-poor environments. Numerous environmental stressors currently threaten the health of corals,...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Christine E. Schnitzler for the degree of Doctor of Philosophy in

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:: THE DISSERTATION OF Jacob A. Tennessen for the degree of Doctor of Philosophy in Zoology

New insights into the biology of theropod dinosaurs

Creator:: Quick, Devon E.
Abstract:: There is little, if any, direct fossil evidence of the cardiovascular, respiratory, reproductive or digestive biology of dinosaurs. However, a variety of data can be used to draw reasonable inferences about the physiology of the carnivorous theropod dinosaurs (Archosauria: Theropoda). Extant archosaurs, birds and crocodilians, possess regionally differentiated, vascularized and...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Devon E. Quick for the degree of Doctor of Philosophy in Zoology presented on December 1

Studies on the biology of Triturus granulosus Skilton

Creator:: Pimentel, Richard A.
Resource Type:: Dissertation
Full Text:: Studies on the Biology of Triturus Granulosus Skilton

Initiation of coral/algal symbioses : the role of cell surface lectin/glycan interactions in recognition and specificity

Creator:: Wood-Charlson, Elisha M.
Abstract:: Mutualistic associations between cnidarians, such as corals, and photosynthetic dinoflagellate algae provide the trophic and structural foundation of coral reef ecosystems. In many cases, this intracellular mutualism is highly specific and must be established anew for each generation of host corals. The ability to maintain partner specificity across generations implies...
Resource Type:: Dissertation
Full Text:: Elisha M. Wood-Charlson for the degree of Doctor of Philosophy in Zoology presented on February 20, 2008

Larval dispersal in marine fishes: novel methods reveal patterns of self-recruitment and population connectivity

Creator:: Christie, Mark R.
Abstract:: Many marine fish populations are severely declining due to over-fishing, loss of both juvenile and adult habitats, and accelerating environmental degradation. Fisheries management and the implementation of marine protected areas (MPAs) and other conservation tools are currently hindered by large gaps in knowledge about larval dispersal and its subsequent effects...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Mark R. Christie for the degree of Doctor of Philosophy in Zoology presented on September 4

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:: degree of Doctor of Philosophy in Zoology presented on 9.2003. Title: Natural History and Evolution of a

Reproductive biology and behavior of the brown tree snake (Boiga irregularis) on Guam.

Creator:: Waye, Heather L.
Abstract:: While there are many more species of reptiles in the tropics than in temperate latitudes, relatively little is known about the natural history of tropical species of snakes. Even basic information, such as reproductive ecology and behavior, is lacking. Patterns of reproduction in tropical species differ from patterns in temperate...
Resource Type:: Dissertation
Full Text:: the degree of Doctor of Philosophy in Zoology presented on April 19, 2007. Title: Reproductive

The biology of two species of Echinorhynchus (Acanthocephala) from marine fishes in Oregon

Creator:: Miller, Richard Leo
Resource Type:: Dissertation
Full Text:: The biology of two species of Echinorhynchus (Acanthocephala

Studies on the biology of two ambystomid and five plethodontid salamanders of western Oregon

Creator:: Freiburg, Richard Eighme
Resource Type:: Dissertation
Full Text:: Studies on the biology of two ambystomid and five

New insight into the morphology and physiology of Mesozoic archosaurs

Creator:: Jones, Terry D.
Abstract:: Inferences regarding the biology of extinct taxa are often founded primarily on cladistically-based phylogenetic hypotheses. However, these inferences are frequently inconsistent with the morphology and physiology of modern animals. I suggest that reference to the biology of modern animals might be a more appropriate tool to aid in the reconstruction...
Resource Type:: Dissertation
Full Text:: Archosaurs AN ABSTRACT OF THE DISSERTATION OF Terry D. Jones for the degree of Doctor of Philosophy in

Population genetics, ecology and evolution of a vertebrate metacommunity

Creator:: Manier, Mollie Kim
Abstract:: Population genetic structure is widespread in many organisms and can be found at small spatial scales. Fine-scale differentiation is the result of ecological and evolutionary processes working together to produce an overall pattern, but the relative importance of these factors in population differentiation is poorly understood. The goals of my...
Resource Type:: Dissertation
Full Text:: degree of Doctor of Philosophy in Zoology presented on January 28, 2005. Title: Population Genetics

Evolutionary and ecological interactions affecting seaweeds

Creator:: Olson, Annette M.
Abstract:: The term "interaction" in evolutionary biology and ecology describes the relationships among variables in two classes of causal models. In the first, "interaction" refers to the influence of a single putatively causal variable on a variable of interest. In the second class of models, the term applies when a third...
Resource Type:: Dissertation
Full Text:: seaweeds AN ABSTRACT OF THE THESIS OF Annette M. Olson for the degree of Doctor of Philosophy in

The effects of community composition, landscape structure, and climate on host-pathogen interactions

Creator:: Moore, Sean M.
Abstract:: Like other species interactions in ecological systems, host-pathogen interactions are influenced by environmental factors, landscape characteristics and the broader community context. My thesis explores the potential influences of food-web interactions (Chapter 2), climate change (Chapter 3), landscape structure and host movement patterns (Chapter 4), and the combined influences of local...
Resource Type:: Dissertation
Full Text:: degree of Doctor of Philosophy in Zoology presented on June 8, 2010. Title: The Effects of Community

Reconstructing the paleobiology of the dinosaurs

Creator:: Geist, Nicholas R.
Abstract:: Dinosaurs represent one of the most successful evolutionary radiations of terrestrial vertebrates, with a myriad of forms that dominated the terrestrial environment for over 180 million years. Despite the fact that dinosaurs are the focus of extensive popular and scholarly investigation, relatively little is actually known of their biology. The...
Resource Type:: Dissertation
Full Text:: OF THE THESIS OF Nicholas R. Geist for the degree of Doctor of Philosophy in Zoology presented on

Polygyny in the bobolink : habitat quality and the adaptive complex

Creator:: Martin, Stephen George, 1941-
Abstract:: The adaptiveness of polygyny in passerines poses a particularly intriguing problem. The altricial young of this group require extended parental care, but young of polygynous pairings generally lack the undivided attention of the male which young of monogamous pairings receive. Polygynous offspring may thus be undernourished and experience greater mortality....
Resource Type:: Dissertation
Full Text:: complex AN ABSTRACT OF THE THESIS OF STEPHEN GEORGE MARTIN for the DOCTOR OF PHILOSOPHY (Name in

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

Creator:: Monsen, Kirsten J.
Abstract:: A major goal of conservation biology is to elucidate the population genetic structure in threatened species and assess the relative importance of the evolutionary forces that shape that population genetic structure. I conducted three studies in the declining amphibian Rana cascadae to assess levels of population genetic differentiation and the...
Resource Type:: Dissertation
Full Text:: Kirsten J. Monsen for the degree of Doctor of Philosophy in

Activation, modification and suppression of sex pheromone production in garter snakes

Creator:: Parker, M. Rockwell
Abstract:: Vertebrates communicate with one another and coordinate intraspecific reproduction by using a variety of sexually dimorphic signals, such as plumage, ornaments, sounds, and/or scents. These sexual dimorphisms are maintained by physiological factors, typically sex-specific hormones (though see Chapter 3 for an exception). The purpose of the research in this dissertation...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF M. Rockwell Parker for the degree of Doctor of Philosophy in Zoology

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