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Filtering by: Creator Finkenbiner, Catherine E. Remove constraint Creator: Finkenbiner, Catherine E. Academic Affiliation Zoology Remove constraint Academic Affiliation: 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

  • Breeding habits, embryonic thermal requirements and embryonic and larval development of the Cascade frog, Rana cascadae Slater

    Creator:
    Sype, William E.
    Abstract:
    The breeding habits and embryonic thermal requirements of the Cascade frog of Oregon, Rana cascadae Slater, are described. The limits of temperature tolerance of the pre-feeding stages are from 6° to 27°C for embryos held at constant temperatures. However, for pre-feeding embryos exposed at different developmental stages for short durations...
    Resource Type:
    Dissertation
    Full Text:
    Development of the Cascade Frog, Rana cascadae Slater by William E. Sype A THESIS submitted to Oregon

  • The roles of provenance and phylogeny in recruitment, community assembly, and species coexistence in invaded California grasslands

    Creator:
    Brandt, Angela J.
    Abstract:
    Biological invasions pose one of the greatest threats to global biodiversity, but many naturalized invaders coexist with the native community. Community ecology theory provides a framework for understanding the mechanisms by which invaders might coexist with native species or exclude them from the community, thus informing management practices to maximize...
    Resource Type:
    Dissertation
    Full Text:
    department, including Catherine Searle, Dafne Eerkes-Medrano, Lindsay Biga, Julia Buck, Joe Tyburczy

  • Aquatic insect adaptations to different flow regimes

    Creator:
    Yamamuro, Asako Melody
    Abstract:
    My thesis explored the effects of environmental variability on population dynamics and community composition of aquatic insects. Environmental variability in the form of flow regime in streams can limit the distribution and life-history traits of aquatic insects. I used tributaries to the McKenzie River in Oregon with dramatically different flow...
    Resource Type:
    Dissertation
    Full Text:
    , Catherine Searle, Angela Brandt, Sean Moore, Margot Hessing-Lewis, Orissa Moulton, Phoebe Zarnetske, Mark

  • 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

  • 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:
    Schnitzler, Catherine Searle, Joe Tyburczy, Josef Uyeda, Elyse Vaccaro, Mike Westphal, Elisha

  • The life history of Neoechinorhynchus rutili (Mueller, 1780) and its development in the intermediate host (Acanthocephala ; Neoechinorhychidae)

    Creator:
    Merritt, Sheridan Vernon
    Abstract:
    The fish of Suttle Lake, Oregon, have been found to harbor an acanthocephalan parasite, which lives attached to the mucosa of the intestine. Between July 1961 and January 1963, several hundred of these fish were exarnined and nearly every one was infected with this parasite, which was identified as Neochinorhynchus...
    Resource Type:
    Masters Thesis
    Full Text:
    rnetarnorphoses th.rough acantheLla to the cystacanth or juveniJ-e stage in 48 to 57 days. This fir:aL stage is

  • 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

  • A comparative study of the chromosomes from five species of the genus Rana

    Creator:
    Haertel, John David
    Abstract:
    The karyotypes of five species of ranid frogs were determined from metaphase plates of bone marrow cells. The colchicine, hypotonic- citrate, blaze-dry technique was used to obtain the plates. Morphometric datawere obtained from the karyotypes and compared with other species of the genus Rana. Like most other members of the...
    Resource Type:
    Dissertation
    Full Text:
    possible. I would also like to acknowledge Dr. E. J. Dornfeld, Dr. A. Owczarzak, and Dr. Patricia Harris

  • 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