Index Catalog // ScholarsArchive@OSU

Value of Prior and Novel Information in Managing a Mixed-Stock Recreational Chinook Salmon Fishery

Creator:: Jensen, Alexander J.
Abstract:: Many economically important Pacific salmon fisheries along the west coast of North America are mixed-stock, recreational systems, in which managers strive to account for interactions between fish, anglers, and management policy while balancing fishery access against conservation of vulnerable stocks. Specific challenges facing fisheries managers include limited control over angling...
Resource Type:: Dissertation
Full Text:: . Title: Value of Prior and Novel Information in Managing a Mixed-Stock Recreational Chinook Salmon

Behavioral and physiological indicators of stress in sablefish, Anoplopoma fimbria

Creator:: Spencer, Mara L.
Abstract:: The development of assays for stress in marine fishes is vital for studying the impacts of bycatch in fisheries and for determining the health of fish being cultured or used in research. This research developed behavioral and physiological assays for stress in juvenile sablefish, Anoplopoma fimbria, a species that comprises...
Resource Type:: Masters Thesis
Full Text:: ................................ 31 6. Baseline patterns and effects of stress on mean activity (± SE) for fish experiencing no

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

Creator:: Floyd, Donald J.
Abstract:: Sex steroids, follicle stimulating hormone (FSH), luteinizing hormone (LH) and gonadotropin releasing hormone (GnRH) were measured in monosex and mixed sex populations of rainbow trout during early development. Steroids declined following fertilization, increased at hatch, then fell and remained constant thereafter. Trends toward differences in steroids between males and females...
Resource Type:: Dissertation
Full Text:: . Information obtained from the study of endocrine control of sexual differentiation can also be applied to

The effects of elevated temperature and stress on immune function in juvenile chinook salmon (Oncorhynchus tshawytscha)

Creator:: Harrahy, Laura Nicole Martini
Abstract:: Stress, including extreme or rapidly changing temperatures, are known to have deleterious effects on fish health and physiology. This thesis examines the combined effects of elevated acclimation temperature and acute handling stress on the number of antibody producing cells, plasma lysozyme concentrations, and the number of pronephric leukocytes in juvenile...
Resource Type:: Masters Thesis
Full Text:: acclimated to a slow fluctuating diurnal temperature cycle of 13-23°C had no changes in plasma corticoid

Capture-related stressors impair sablefish, Anoplopoma fimbria, immune system function

Creator:: Lupes, Sarah C.
Abstract:: Sablefish, Anoplopoma fimbria, is a valuable North Pacific Ocean species caught in several commercial fisheries and is often discarded due to size or catch limits. Managers must account for the mortality of discarded fish to assess fish populations and harvest impacts, yet discard mortality rates of specific fisheries are generally...
Resource Type:: Masters Thesis
Full Text:: physiologically, with no information currently on disease resistance capacity. Investigations of the immune

Effects of o,p'-DDE on the immune system of juvenile chinook salmon (Oncorhynchus tshawytscha)

Creator:: Milston, Ruth Helen
Abstract:: Environmental factors such as chemical contamination can have immunomodulatory effects on the immune response of fish and may be contributing to the decline in salmonid populations by augmenting disease susceptibility. Xenobiotics can interfere with the immune system at several levels of complexity, and different immune cells and processes have variable...
Resource Type:: Masters Thesis
Full Text:: and 3) of parameters measured with no significant differences between treatments

Effects of atrazine on olfactory-mediated behaviors in Pacific lamprey (Entosphenus tridentatus)

Creator:: Smith, April G.
Abstract:: Pacific lamprey (Entosphenus tridentatus) are experiencing population declines throughout their range. Xenobiotics could be an important risk factor for lamprey populations. Our goal was to establish if common herbicides, as used in forest management, could affect reproductive fitness. We determined that atrazine was a likely compound of greatest concern to...
Resource Type:: Masters Thesis
Full Text:: (no observed adverse effect concentration) for a freshwater fish. The following qualities of each

Evaluation of differing anti-predator strategies of three juvenile north Pacific flatfish species

Creator:: Lemke, Jena
Abstract:: Pleuronectid flatfish are generally thought to utilize stereotypical anti-predator behavior to reduce encounters with potential predators, including burial, maintaining a low profile on the bottom, cryptic coloration, and reduced activity. However, a series of laboratory experiments demonstrate significantly different predation rates on juvenile (Age-0) English sole (Parophrys vetulus), northern rock...
Resource Type:: Masters Thesis
Full Text:: ), which was likely not meaningful. No evidence of size selection was observed in my experiments as there

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

Creator:: Stone, Steven L.
Resource Type:: Masters Thesis
Full Text:: no prior exposure to odors of any of the donor species, hence the avoidance/ preference responses

The Impact of Parasitic Copepod Salmincola Californiensis on Swimming Ability & Oxidative Burst Activity in Response to Stress in Juvenile Chinook Salmon

Creator:: Herron-Seeley, Crystal L.
Abstract:: Juvenile Chinook Salmon (Oncorhynchus tshawytscha) have a finite amount of energy that they can use to move from their riverine habitat to their oceanic habitat. Fish in the Willamette River Basin are prevented from moving to the ocean easily by dams which create reservoirs, where they reside for up to...
Resource Type:: Masters Thesis
Full Text:: oxygen as there was no flow in this time period. At the end of the 30-minute infection period, water

ScholarsArchive@OSU

Value of Prior and Novel Information in Managing a Mixed-Stock Recreational Chinook Salmon Fishery

Behavioral and physiological indicators of stress in sablefish, Anoplopoma fimbria

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

The effects of elevated temperature and stress on immune function in juvenile chinook salmon (Oncorhynchus tshawytscha)

Capture-related stressors impair sablefish, Anoplopoma fimbria, immune system function

Effects of o,p'-DDE on the immune system of juvenile chinook salmon (Oncorhynchus tshawytscha)

Effects of atrazine on olfactory-mediated behaviors in Pacific lamprey (Entosphenus tridentatus)

Evaluation of differing anti-predator strategies of three juvenile north Pacific flatfish species

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

The Impact of Parasitic Copepod Salmincola Californiensis on Swimming Ability & Oxidative Burst Activity in Response to Stress in Juvenile Chinook Salmon

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