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Coastal cutthroat trout (Oncorhynchus clarki clarki) populations have undergone major range wide declines over the past two decades. This study was initiated in light of their declining status in an effort to augment the paucity of existing data,...
2009-10-05
2009-10-05
1998-11-22
Age-0 pollock are the most abundant small pelagic species around the Pribilof Archipelago, composing more than 90% of both the local numerical abundance and the fish biomass abundance. Due to a favorable combination of physical and biological...
2009-10-05
2009-10-05
2014-11-22
Using different classes of molecular markers, I conducted three independent studies to examine distributions of northern fur seals ( Callorhinus ursinus) and Steller sea lions (Eumetopias jubatus ). Molecular techniques were developed and applied...
2009-10-05
2009-10-05
2014-11-22
Circa 1890, smooth cordgrass, Spartina alterniflora, was unintentionally introduced to Willapa Bay, Washington, presumably as discarded packing material for eastern oysters, Crassostrea virginica. At present, S. alterniflora covers over 2,000 ha...
2009-10-05
2009-10-05
1999-11-22
In order to cope with an ever-increasing world population, it is imperative to find a way to increase world food production and, at the same time, to reduce environmental pollution. The present research has a significant implication since it aimed...
2009-10-05
2009-10-05
1998-11-22
Two classes of nuclear DNA markers yielded contrasting patterns of genetic differentiation among populations of walleye pollock, Theragra chalcogramma . Samples across the natural geographic range were screened for variation at seven...
2009-10-05
2009-10-05
2014-11-22
Ecology of intertidal and subtidal bivalves was studied in Prince William Sound, Alaska following the Exxon Valdez oil spill and after population reductions in sea otters (Enhydra lutris ). Improved understanding of population structure, residual...
2009-10-05
2009-10-05
2014-11-22
Foraging behavior of brown bears was examined at several small streams and ponds where pink and chum, or sockeye salmon spawn. Capture and consumption choice by bears was consistent with a lipid-maximizing strategy, but varied with salmon density...
2009-10-05
2009-10-05
2014-11-22
The phosphorus load in aquaculture discharge water can adversely impact aquatic ecosystems by stimulating eutrophication. Although phosphorus is required in fish feeds for proper growth and nutrition, a significant portion of dietary phosphorus is...
2009-10-05
2009-10-05
1997-11-22
Coastal cutthroat trout (O. c. clarki) and steelhead (the anadromous form of O. mykiss) coevolved and are thought to be reproductively isolated. However, hybridization has been documented between them under at least some circumstances. The extent...
2009-10-05
2009-10-05
1997-11-22
Two theoretical models: the first order reaction model and the enzyme deactivation model were proposed to explain the progressive curve of salmon tissue hydrolysis by pepsin and Alcalase. The static model for the degree of hydrolysis, at 1 hr, 3...
2009-10-05
2009-10-05
2014-11-22
Long-term changes of economical- and ecologically important fish species for the NEP were reconstructed based on fish scale preserved in laminated sediments from Effingham Inlet, a small fjord on the southwest coast of Vancouver Island, British...
2009-10-05
2009-10-05
2014-11-22
The purpose of the research was to determine the type of toxic interaction of chlorine, nickel, and temperature on rainbow trout (Salmo gairdneri); to develop a multiple regression model of the multiple toxicant tests; and to provide a biological...
2009-10-05
2009-10-05
1981-11-22
Juvenile sockeye salmon (Oncorhynchus nerka) typically exhibit an extended period of lacustrine growth prior to their migration to salt water, and yet little is known about variation in the early life history traits among sympatric populations or...
2009-10-05
2009-10-05
2014-11-22
The rate and pattern of population evolution over short time scales is of concern to evolutionary and conservation biology. There is considerable theoretical and practical interest surrounding what evolutionary mechanisms are most important in...
2009-10-05
2009-10-05
1999-11-22
One hypothesis for the decline of the western stock of Steller sea lions (Eumetopias jubatus) is dietary related nutritional stress, which may have adversely affected juvenile survival and female fecundity. Fatty acids in the blubber of sea lions...
2009-10-05
2009-10-05
2014-11-22
This dissertation examines the nature of variability in the atmospheric and oceanic climate of the North Pacific and its relation to the level of salmon production in Alaska. I first discuss the inherent difficulties and traditional shortcomings...
2009-10-05
2009-10-05
1996-11-22
Movements and diving behavior of narwhals (Monodon monoceros ) were examined using satellite-linked time depth recorders deployed on three sub-populations in Canada and West Greenland. Spatial models were used to link satellite telemetry to static...
2009-10-05
2009-10-05
2014-11-22
Burrowing ghost shrimp (Neotrypaea californiensis) and mud shrimp (Upogebia puggetensis), which construct extensive subterranean burrow systems in estuarine intertidal and shallow subtidal sediments, have had a considerable impact on two of...
2009-10-05
2009-10-05
2014-11-22
Two separate feeding trials were conducted using University of Washington rainbow trout broodstock to determine the effect of dietary protein level, ration size and water temperature during the period of gonad development on their pre-spawning...
2009-10-05
2009-10-05
1983-11-22
This study investigated possible associations of serum transferrin phenotypes with some early life history traits in coho salmon, Oncorhynchus kisutch. Electrophoretic methodology permitted determination of transferrin phenotypes in adult fish,...
2009-10-05
2009-10-05
1981-11-22
The aquaculture industry requires accurate and timely biomass or inventory information for the optimum use of the capital invested in its facilities and to minimize operation and feed costs; this information is also needed for accounting and...
2009-10-05
2009-10-05
1994-11-22
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