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Filtering by: Creator Curtis, Morgan A. Remove constraint Creator: Curtis, Morgan A. Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife

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  • Influence of water hardness on gill accumulation and acute toxicity of aluminum in rainbow trout

    Creator:
    Bustaman, Sjahrul
    Abstract:
    Rainbow trout were exposed to aluminum at pH 7.25 and 8.25 and four hardnesses (10, 30, 80, and 120 ppm CaCO₃) for 96 hours in a continuous-flow system and mortality and aluminum accumulation in the gills were determined. Temperature, pH, and dissolved oxygen were measured daily for each treatment. Dissolved...
    Resource Type:
    Masters Thesis
    Full Text:
    :_ Redacted for Privacy Lawrence R. Curtis Rainbow trout were exposed to aluminum at pH 7.25 and 8.25 and

  • Human Alteration of a Neotropical Landscape Drives Long-term Changes in its Forest Bird Communities

    Creator:
    Curtis, Jenna R.
    Abstract:
    Human alteration of natural landscapes leads to biodiversity loss, often from a combination of area effects and fragmentation effects. Smaller habitat patches support fewer species than large ones and incur additional consequences from isolation. Efforts to preempt biodiversity loss from insular habitat fragments are complicated by individualistic species responses and...
    Resource Type:
    Dissertation
    Full Text:
    . © Copyright by Jenna R. Curtis December 12, 2019 All Rights Reserved Human Alteration of a

  • Pellet counts as a census and range-use technique for Columbia black-tailed deer

    Creator:
    Meehan, James Morgan
    Abstract:
    Rates of defecation of black-tailed deer in the Tillamook Burn of western Oregon were estimated using counts of groups of fecal pellets in 1959 and 1960. A 340-acre enclosure was divided into eight range types on the basis of depth of soil, aspect, and elevation. The estimated rates of defecation...
    Resource Type:
    Masters Thesis

  • Genetic Connectivity of Dungeness Crab (Cancer magister) in the California Current System and Puget Sound

    Creator:
    Jackson, Tyler M.
    Abstract:
    Understanding connectivity among exploited populations is critical to their sustainable management and long-term viability. In the marine environment, estimates of connectivity often rely on the use of genetic markers, as dispersal primarily occurs during a planktonic larval phase which is difficult to track using direct methods. In this thesis, we...
    Resource Type:
    Masters Thesis
    Full Text:
    markers, as dispersal primarily occurs during a planktonic larval phase which is difficult to track

  • Temperature-modulated 7,12-dimethylbenz(a)antheracene carcinogenicity in rainbow trout

    Creator:
    Zahr, Camille Reda
    Abstract:
    Temperature influences the incidence of chemically induced cancer in fish, with warmer temperatures being associated with higher cancer incidence. The mechanisms of temperature-modulated chemical carcinogenesis in fish, however, have not been described in detail. Therefore, one primary objective of this study was increased understanding of how temperature-modulated genotoxicity of 7,12-...
    Resource Type:
    Dissertation
    Full Text:
    -, Dimethylbenz(a)anthracene Carcinogenicity in Rainbow Trout. Abstract approved: Lawrence R. Curtis

  • Using quadrats and GPS to assess the abundance of rodent holes in different habitats

    Creator:
    Dally, Morgan E.
    Abstract:
    2018 Library Undergraduate Research Awards nomination materials, reflective learning essay, and research paper. In this study, pocket gopher and gray-tailed vole holes and hills were counted within four distinct habitats using quadrats and a gridding method over a period of five field days. The study was conducted to determine which...
    Resource Type:
    Research Paper

  • 60 years of avian community change in the Willamette Valley, Oregon

    Creator:
    Curtis, Jenna
    Abstract:
    Birds perform valuable ecological functions and are useful environmental indicators. Avian distributions and diversity are predicted to change over the next 50 years. Little information exists on the role of local and regional conditions in fluctuations of avian communities over time. Historic datasets present a legacy of information that helps...
    Resource Type:
    Masters Thesis

  • Ration and toxicant preexposure influence dieldrin accumulation by rainbow trout

    Creator:
    Shubat, Pam
    Abstract:
    Whole body accumulation and tissue distribution of dieldrin (HEOD1) in rainbow trout was studied through oral dose disposition tests and subchronic exposures via water (0.04 and 0.08 jig dieldrin/l) and/or diet (0.087 jig dieldrin/g fish/day). Growth and maintenance rations of 4 and 2% body weight/day were employed. Subchronic testing produced...
    Resource Type:
    Masters Thesis
    Full Text:
    . Curtis, Assistant Professor of Fisheries in charge of major Redacted for privacy Richard A. Tubb, Head

  • Mechanisms affecting the bioaccumulation of dietary quinoline by rainbow trout (Salmo gairdneri)

    Creator:
    Dauble, Dennis D.
    Abstract:
    Factors that influenced the uptake, storage, and elimination of dietary quinoline by rainbow trout (Salmo gairdneri) were studied to obtain an understanding of the mechanisms affecting the bioaccumulation of dietary contaminants in teleosts. Rainbow trout readily absorbed ¹⁴C-quinoline from pelleted food (1% ration at 138 ug quinoline/g food) and most...
    Resource Type:
    Dissertation
    Full Text:
    Lawrence R. Curtis Factors that influenced the uptake, storage, and elimination of dietary quinoline by

  • Energy utilization by young grass carp fed different diets

    Creator:
    Cai, Zhengwei
    Abstract:
    Effects of diet on food energy utilization by grass carp fed aquatic plants or formulated diets with varied lipid sources and levels are presented in three manuscripts. Significant effects of diet on food consumption, digestion, growth and muscle fatty acid (FA) composition of fingerling diploid grass carp fed aquatic macrophytes...
    Resource Type:
    Dissertation
    Full Text:
    Curtis, Chapter 1), which are thought to have benefits in the prevention and treatment of a number of