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Filtering by: Creator Smith, Catherine Bennett Remove constraint Creator: Smith, Catherine Bennett Degree Field Zoology Remove constraint Degree Field: Zoology

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  • Chemical signaling and pheromone evolution in plethodontid salamanders

    Creator:
    Palmer, Catherine Anne
    Abstract:
    My dissertation focuses on the evolutionary forces that have shaped the chemical signaling system of plethodontid salamanders. Pheromones mediate two phases of plethodontid reproduction: mate attraction prior to courtship and female persuasion during courtship. Substrate-borne chemical signals are believed to play an important role in mate attraction for these animals....
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Catherine Anne Palmer for

  • The effects of an emerging pathogen on amphibian host behaviors and interactions

    Creator:
    Han, Barbara A.
    Abstract:
    Contemporary environmental change encompasses massive biodiversity loss and increasing numbers of emerging diseases worldwide. As part of a global biodiversity crisis, amphibians are disappearing at unprecedented rates. Batrachochytrium dendrobatidis is an emerging infectious pathogen prominently associated with many declines. Chapter 1 reviews the past decade of research on this system...
    Resource Type:
    Dissertation
    Full Text:
    for your generosity and hospitality, Erin. Catherine Searle was a welcome partner in crime for

  • 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:
    and Jim Manier, Morgan Manier, Laura Arnold, Brittany Barker, Al Bennett, Man Bennett, Rudi

  • On the evolution of correlated color traits in garter snakes

    Creator:
    Westphal, Michael F.
    Abstract:
    How complex traits evolve continues to be a major focus of evolutionary investigation. A current topic of debate is the hypothesis that the phenotypic integration of complex traits gives rise to evolutionary constraints. I studied two color traits in the common garter snake, Thamnophis sirtalis, that show a high level...
    Resource Type:
    Dissertation
    Full Text:
    Vaccaro, Dr. Erika Adams, Doug DeGross, Jerod Sapp, and Dr. Catherine Palmer. Many of my colleagues

  • 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:
    exceed those in similar-mass ectotherms by some 15-20 fold (Bennett, 1991; Bennett et al., 2000

  • Host parasite relationships between deer mice (Peromyscus maniculatus) and their eimerian parasites (protozoa)

    Creator:
    Fuller, Claire A.
    Resource Type:
    Dissertation
    Full Text:
    and Smith (1991) showed that intraspecific 3 competition was density dependent and negatively

  • 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:
    megapode specimens; G. and N. Smith, for donation of emu specimens; B. Taylor for photomicroscopy advice

  • Heat-shock protein expression in Mytilus californianus : seasonal and tidal height comparisons

    Creator:
    Roberts, Deirdre
    Resource Type:
    Masters Thesis
    Full Text:
    straight-forward (e.g., Huey & Bennett 1990, Smith & Yaffe 1991). In many organisms, a pre-treatment at a

  • Seasonal thermoregulation in the dark-eyed junco (Passeriformes: Junco hyemalis)

    Creator:
    Swanson, David Leslie
    Abstract:
    Winters in north-temperate climates impose high thermogenic demands upon small birds which are met by seasonal acclimatization. This thesis investigates the extent and mechanisms of seasonal acclimatization in darkeyed juncos (Junco hyemalis) inhabiting western Oregon. Although insulation is significantly increased in winter, acclimatization is primarily metabolic. Increased metabolism is required...
    Resource Type:
    Dissertation
    Full Text:
    30 times the energy expenditure by equal-sized ectotherms (Bennett and Nagy, 1977

  • Ultraviolet radiation as an environmental stressor of amphibians

    Creator:
    Bancroft, Betsy A.
    Abstract:
    My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
    Resource Type:
    Dissertation
    Full Text:
    of the Blaustein lab. Erin Scheessele, John Romansic, Barbara Han, Catherine Searle, Lindsay