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  • Defining micro-habitat relationships for juvenile black rockfish, Sebastes melanops

    Creator:
    Mann, Marion E.
    Abstract:
    The functioning of marine habitats needs to be understood in the context of the ecological relationships and associations between organisms and the physical and biogenic environment they inhabit. Thus, it becomes important to explore and define habitat features which contribute to these relationships and which are important in the life...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Marion E. Mann for the degree of Master of Science in Fisheries Science on May 27

  • Cortisol and the immune system of juvenile Pacific salmon during stress and development

    Creator:
    Maule, Alec G.
    Abstract:
    Plasma concentrations of cortisol, a glucocorticoid hormone that is immunosuppressive in mammals, increase during stress and smoltification of salmonids. There was a reduction in the ability of lymphocytes to generate antibody producing cells (APC) in vivo concurrent with increased plasma cortisol titers during smoltification of coho salmon (Oncorhvnchus kisutch). Cortisol...
    Resource Type:
    Dissertation
    Full Text:
    plasma cortisol that were concurrent with decreased ability to generate APC in vitro 4 h after stress

  • Status and habitat preference of California bighorn sheep on Sheldon National Wildlife Refuge, Nevada

    Creator:
    Hansen, Michael Charles
    Abstract:
    A herd of California bighorn sheep (Ovis canadensis californiana), re-introduced to the area of Hell Creek on the Sheldon National Wildlife Refuge in northwestern Nevada, was studied from 15 June 1978 to 20 August 1980. Major vegetation and physiographic types were delineated and described. Habitat preferences were determined from field...
    Resource Type:
    Masters Thesis
    Full Text:
    for the degree of Master of Science in Wildlife Science presented on 27 April 1982 Title: Status and

  • Distribution and movements of Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin

    Creator:
    Eiler, John H.
    Abstract:
    Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin and other large river systems in western Alaska have declined dramatically since the late 1990s. This continuing trend has raised concerns over the future status of the returns, and severely impacted commercial and subsistence fisheries within the drainage. Management is...
    Resource Type:
    Dissertation
    Full Text:
    H. Eiler for the degree of Doctor of Philosophy in Fisheries Science presented on August 1, 2013

  • Mate choice of wild spawning coho salmon (Oncorhynchus kisutch) in the Umpqua River, Oregon

    Creator:
    Whitcomb, Amelia C.
    Abstract:
    Evidence for reduced reproductive success (RS) of wild spawning hatchery-reared fish invites serious consideration with regard to the detrimental effects on subsequent generations of wild populations. Mate choice was evaluated as a potential mechanism contributing to these observed RS differences using a previous pedigree of wild spawning hatchery-reared and wild...
    Resource Type:
    Masters Thesis
    Full Text:
    of Master of Science in Fisheries Science presented on November 27, 2012. Title: Mate Choice of

  • Headwater stream macroinvertebrates of the H.J. Andrews Experimental Forest, Oregon

    Creator:
    Frady, Charles H.
    Abstract:
    Recent studies of headwater streams have demonstrated their importance to overall watershed biodiversity, nutrient cycling, and energy flux. However, little attention has been paid to long-term effects of forest harvest on macroinvertebrate communities in headwater streams. This study investigated headwater stream macroinvertebrate communities in the H.J. Andrews Experimental Forest, Oregon,...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF Charles H. Frady for the degree of Master of Science in Fisheries Science presented on

  • A review of the Gadopsidae, with a description of a new species from Tasmania

    Creator:
    Parrish, Richard H.
    Abstract:
    The taxonomic placement of Gadopsidae is discussed and an evaluation of its osteological relationships with related families is given. Similarities to the more primitive genera of the trachinoids, notothenioids, and uranoscopoids are noted and the inclusion of Gadopsidae in the Trachinoidae is recommended. A description of the geological history of...
    Resource Type:
    Masters Thesis
    Full Text:
    meristic characters (15) were made on 27 fish from four localities in Tas- mania and 107 fish from six

  • Morphological and meristic characteristics of ten populations of blackside dace, Rhinichthys osculus nubilus (Girard ), from western Oregon

    Creator:
    Zirges, Malcolm H.
    Abstract:
    Blackside dace, Rhinichthys osculus nubilus (GIRARD), were collected from ten western Oregon streams and examined for variation among morphological and meristic characters. Several characters were observed to vary between populations studied. Number of vertebrae, number of scales in and above the lateral line, length of snout, and depth of body...
    Resource Type:
    Masters Thesis
    Full Text:
    6 9 11 11 14 14 Is 20 20 20 20 20 21 24 26 CONCLUDING DISCUSSION 27 Character of

  • The effects of rotational grazing and prescribed burning on bobwhite populations in south Texas

    Creator:
    Wilson, Marcia H.
    Abstract:
    Short-term effects of 3 grazing systems and prescribed burning on bobwhite (Colinus virginianus) populations were investigated on the Welder Wildlife Refuge near Corpus Christi, Texas, during spring (April through June) and fall (September through October) of 1976 and 1977. Two rotational systems, high intensity-low frequency (HILF) and four-pasture, deferred-rotation (4PDR),...
    Resource Type:
    Masters Thesis
    Full Text:
    sampled with a point frame. Quail popu- lation indices were determined from 4 methods: number of quail

  • Migration, movement, and habitat use of humpback whitefish (Coregonus pidschian) in the Copper River Delta, Alaska

    Creator:
    Neilson, Brian J.
    Abstract:
    Research conducted on humpback whitefish Coregonus pidschian in the Copper River Delta, Alaska has revealed a complex life history involving seasonal migrations and the occupation of a variety of freshwater and marine habitats including lacustrine, riverine, estuarine, and marine. Forty-five whitefish were tagged with radio transmitters in 2006 and 2007,...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Gordon H. Reeves Research conducted on humpback whitefish Coregonus pidschian in the