Index Catalog // ScholarsArchive@OSU

Creator:: Hirai, Takayuki
Abstract:: The research involved development of two ecological simulation models to explain the complex dimensionality of chinook salmon (Oncorhynchus tshawytscha) life history structure (represented by the age composition of the spawning stock) and management difficulties entailed in the complexity. Since different sizes of chinook salmon are thought to adapt differently to...
Resource Type:: Dissertation
Full Text:: tshawytscha) life history AN ABSTRACT OF THE THESIS OF TAKAYUKI HIRAI for the degree of DOCTOR OF

Creator:: Nichol, Daniel Gerard
Abstract:: The growth, size and age composition, mortality and reproduction of darkblotched rockfish (Sebastes crameri) were examined using fishery data and analysis of fish characteristics for samples collected of f the Oregon coast. A total of 1060 fish, caught by commercial groundfish and shrimp trawlers operating out of Newport, Coos Bay...
Resource Type:: Masters Thesis

Creator:: Wevers, Mary Jo
Abstract:: An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat trout (Oncorhynchus spp.) based on life history and evolutionary adaptive capacities of species and stocks is presented. Species, stocks, and local populations are viewed as systems that are continuously adapting to changing environmental conditions. They have the potential...
Resource Type:: Dissertation
Full Text:: Life history and evolutionary adaptation of Pacific

Creator:: Connelly, Anne E.
Abstract:: Grape phylloxera, Daktulosp/iaira vitfoliae (Fitch) development was studied under field and laboratory conditions. The aphid-like insect feeds on Vitis vinfera L. roots producing swellings that decay and lead to vine decline. The only long-term economic solution for control of grape phylloxera (GP) is to plant vines grafted onto a resistant...
Resource Type:: Masters Thesis

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