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Filtering by: Creator Simionato, C. G. Remove constraint Creator: Simionato, C. G. Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • Effects of habitat manipulations on California quail in western Oregon

    Creator:
    Oates, Russell M.
    Abstract:
    The effects of disking, food plantings, and wheat plantings on a population of California quail (Lophortyx californicus) were studied from fall 1976 to spring 1978 on the E.E. Wilson Wildlife Area, Oregon. Twelve 16.2-ha study sites were established: 3 study sites for each treatment and 3 control sites. Disked areas,...
    Resource Type:
    Masters Thesis
    Full Text:
    to final draft of the thesis. Special thanks to the committee: Dr. John A. Crawford, Dr. William C

  • A genetic study of the red-band trout (Salmo sp.)

    Creator:
    Wilmot, Richard L.
    Abstract:
    A group of trout that reside in streams of the desiccating lake basins of southeastern Oregon differ markedly from other known Salmo. Known commonly as the red-band trout, this fish was subjected to chromosome analysis for comparison with other species of western North American Salmo. The karyotype of the red-banded...
    Resource Type:
    Dissertation
    Full Text:
    . Evolutionary genetics of cave-dwelling fishes of the genus Astyanax. Evol. 26:1-19. Bailey, G. S. and A. C

  • Land-based polyculture of chinook salmon, Oncorhynchus tshawytscha; Manila clams, Tapes japonica (Deshyes); and red macroalgae, Palmaria mollis

    Creator:
    Moosapanah, G. Reza
    Abstract:
    This investigation demonstrates the feasibility of a polyculture system using effluent water from land-based salmon culture systems to feed juvenile Manila clams, Tapes japonica (Deshyes), and an evaluation of an artificial diet for feeding juvenile clams. An economic analysis of the polyculture system was compared to cultures of a single...
    Resource Type:
    Dissertation

  • Residence and growth of juvenile chum salmon (Oncorhynchus keta) in Netarts Bay, Oregon

    Creator:
    Wilson, Matthew T.
    Abstract:
    Estuarine residence and growth of juvenile chum salmon (Oncorhynchus keta) from Netarts Bay, Oregon were estimated from daily-formed growth increments of sagittal otoliths which are distinguishable from accretion patterns formed during freshwater residence. Estuarine residence time was inversely related to the average size at which juvenile chum salmon entered Netarts...
    Resource Type:
    Masters Thesis
    Full Text:
    Growth of Juvenile Chum Salmon (Oncorhynchus keta) in Netarts Bay, Oregon Abstract ann roved: William G

  • Fertilization of salmonid eggs with cryopreserved sperm

    Creator:
    Ott, Alvin G.
    Abstract:
    Numerous fishery researchers have attempted to preserve viable fish sperm, but only three investigations were successful in the fertilization of fresh eggs with frozen and thawed sperm: Blaxter (1953); Hoyle and Idler (1968); and Graybill and Horton (1969). Significant advances reported in this thesis were: the development of suitable life...
    Resource Type:
    Masters Thesis
    Full Text:
    ; the verification that the best rate of freezing semen was -30 C/mm, arid that the best method of

  • Environmental contaminants and ecology of bald eagles in southcentral Oregon

    Creator:
    Frenzel, Richard Wilmarth
    Abstract:
    Food habits and levels of organochlorine compounds, lead, and mercury in resident and wintering bald eagles were studied in southcentral Oregon and California, 1979-83. Food habits were assessed by examination of castings from winter communal roosts, identification of 2938 prey items found at nest sites and foraging areas, and observations...
    Resource Type:
    Dissertation
    Full Text:
    , D. Goldenberg, B. Hale, E. Hammond, R. Jarvis, H. Jones, C. Keister, D. Lewis, G. Miller, Sako, C

  • Foraging strategies of Glaucous-winged Gulls : influences of sea otter predation

    Creator:
    Irons, David B
    Abstract:
    Diets and foraging strategies of Glaucous-winged Gulls were studied in areas with and without sea otters in the western Aleutian Islands, Alaska. Gulls foraged on invertebrates (e.g., sea urchins, limpets, chitons, mussels, and others) in the rocky intertidal community and on fish at sea; this study was conducted on gulls...
    Resource Type:
    Masters Thesis
    Full Text:
    1976, Zach and Falls 1976a, b, c, Davis 1977, Eggers 1977, Gill and Wolf 1977, Reichman 1977, and

  • Some chronic effects of exposure to kraft mill effluent on juvenile chinook salmon

    Creator:
    Tokar, Erick M.
    Abstract:
    The effects of sublethal concentrations of kraft mill effluents (KME) on the growth, food consumption, and swimming ability of juvenile chinook salmon, Oncorhynchus tschawytscha (Walbaum), were studied from February 1966 to May, 1967. The KME used in these studies was obtained from two pulp and paper mills producing paper from...
    Resource Type:
    Masters Thesis
    Full Text:
    KRAFT MILL EFFLUENT ON JUVENILE CHINOOK SALMON Abstract approved: Redacted for privacy *George G

  • Mercury accumulation in fish from Cottage Grove Reservoir and its tributaries

    Creator:
    Worcester, Thomas C
    Abstract:
    A fish sampling program was initiated at Cottage Grove Reservoir in June of 1974 to investigate mercury accumulation in the fish. Samples were collected periodicallv from June to November, 1974, and from June, 1975 through January, 1976 from both the reservoir and its tributaries. Species collected included spring chinook salmon...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF THOMAS C. WORCESTER for the degree

  • Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River Estuary

    Creator:
    Wright, Sadie K.
    Abstract:
    The California brown pelican (Pelecanus occidentalis californicus) is listed as an endangered species under the U.S. Endangered Species Act. The Recovery Plan for this subspecies outlines the need to "Assure long-term protection of adequate food supplies and essential. . .roosting. . . habitat throughout the range." I investigated the effects...
    Resource Type:
    Masters Thesis
    Full Text:
    Columbia River Estuary. Abstract approved Robert G. Anthony The California brown pelican (Pelecanus