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In this dissertation, I develop quantitative ecosystem models to be used in fisheries management applications. The current goal of fishery management is to sustain fisheries for individual exploited species. In the first chapter, I develop a...
2009-10-05
2009-10-05
2014-10-25
Species and populations evolve through variation in reproductive success (RS) among individuals with different values of heritable traits. Estimates of RS can be obtained from observations of behaviour or data on life history traits, but fitness...
2009-10-05
2009-10-05
2014-10-25
An extensive study on parvalbumin, a small molecular weight, heat stable, sarcoplasmic protein, was conducted to determine the following: (1) its presence in 21 common fish species, processed fish products, meat, poultry, and other protein...
2009-10-05
2009-10-05
1992-10-25
Pacific cod (Gadus macrocephalus) migrate into the waters of Port Townsend, Washington, during the winter. An intense commercial set net and trawl fishery is directed at these Pacific cod spawning aggregations.Life history parameters estimated...
2009-10-05
2009-10-05
1982-10-25
Members of the teleost subfamily Pleuronectinae comprise the vast majority of commercially important flatfishes of the Northern Hemisphere, including such species as Hippoglossus stenolepis, the Pacific halibut, and Pseudopleuronectes americanus,...
2009-10-05
2009-10-05
1987-10-25
Annual shore censuses of southbound migrating gray whales were conducted from points near Monterey, CA, for 13 years beginning in 1967/68, by the U.S. National Marine Mammal Laboratory. To utilize these daylight counts in an estimation of total...
2009-10-05
2009-10-05
1981-10-25
Model performance and observation error were acknowledged and formally included into an assessment about the status of the NE stock of spotted dolphins that is affected by the tuna fishery in the ETP. The results of the assessment were then used...
2009-10-05
2009-10-05
2014-10-25
In this dissertation, I examine the ocean feeding patterns of several species of Pacific salmon (Oncorhynchus spp.) in the offshore waters of the Gulf of Alaska. My goal is to provide an appropriate context for comparing the relative effects of...
2009-10-05
2009-10-05
2014-10-25
Zinc is both a ubiquitous, aquatic pollutant and an element essential to maintain the health of fishes. This dual role of zinc exemplifies the need to understand the biochemical and physiological mechanisms involved in metal metabolism by fishes....
2009-10-05
2009-10-05
1983-10-25
The power of selection to drive evolution has captivated evolutionary biologists since Darwin. It is often noted that conspecific populations differ in phenotypic traits, and divergent selection appears to be a critical force generating this...
2009-10-05
2009-10-05
2014-10-25
The freshwater migration behavior of juvenile steelhead trout (Oncorhynchus mykiss) within a large river system was examined. Extensive steelhead spawner counts, mark and recapture information, and tributary weir trap counts collected by state and...
2009-10-05
2009-10-05
1992-10-25
Fisheries management can only be successful in controlling the catch of each species in a fishery if the species targeting decisions of fishermen are understood. Dynamic programming, a discrete-time optimization method that is used in foraging...
2009-10-05
2009-10-05
1998-10-25
Previous hypotheses of relationship among lophiiform fishes, based largely on comparative anatomy, are tested with a new character set comprised of mitochondrial DNA (mtDNA) sequences. A region of the 16S ribosomal gene for sixteen lophiiform...
2009-10-05
2009-10-05
1997-10-25
Timing of seasonal drawdowns influenced the plant response on Hovey Point within the 3-year study. Early drawdowns occurring on 1 April and 24 April promoted the establishment of undesirable and invasive plant species, while later drawdowns...
2009-10-05
2009-10-05
2014-10-25
Sockeye salmon (Oncorhynchus nerka) stored energy in their somatic tissues before maturation, and then mobilized that energy efficiently. The early stages of maturation were coincident with upstream migration and initial gonad development, for...
2009-10-05
2009-10-05
1998-10-25
Growth rates measured as changes in whole volume and dry tissue mass in juvenile diploid Pacific oysters (Crassostrea gigas) grown at low density in suspension culture varied in relation with increased ambient temperature and ambient seston levels...
2009-10-05
2009-10-05
1994-10-25
Experiments were conducted to identify proximate mechanisms mediating the previously described relationship between pubertal age and energy status in Pacific salmon. To determine which parameters of the reproductive endocrine axis of salmon are...
2009-10-05
2009-10-05
2014-10-25
The specific humoral response of teleost fish to extracellular bacteria was examined using a rainbow trout-Vibrio anguillarum model. Treatment groups were immunized with a whole cell, formalin-killed vaccine by oral, immersion, and injection...
2009-10-05
2009-10-05
1996-10-25
The accuracy of acoustic fish biomass estimates usually depends on how well one is able to distinguish between important fish classes in backscatter images. This thesis presents two new automatic methods for doing such discrimination. Like...
2009-10-05
2009-10-05
2014-10-25
Pacific Northwest field studies and a world-wide questionnaire survey were conducted to determine the efficacy of sterile triploid grass carp for aquatic plant control in the Pacific Northwest, and to develop a method of predicting grass carp...
2009-10-05
2009-10-05
1990-10-25
Chromosome set manipulation has recently played a central role in many salmonid genetics studies. The easiest way to successfully manipulate salmonid chromosomes is through blocking meiosis II in oocytes to accomplish both polar-body gynogenesis...
2009-10-05
2009-10-05
1987-10-25
The Alaska Skate Bathyraja parmifera is an abundant elasmobranch species in the eastern Bering Sea, and vulnerable to directed fishing mortality. The reproductive biology of the species was studied with regard to nursery site selection and...
2009-10-05
2009-10-05
2014-10-25
A 57 kilodalton protein known as p57 or MSA is one possible virulence factor of Renibacterium salmoninarum, the causative agent of a disease of salmonid fishes known as bacterial kidney disease (BKD). The p57 antigen is the predominant protein on...
2009-10-05
2009-10-05
2014-10-25
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