Index Catalog // ScholarsArchive@OSU

Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch

Creator:: Specker, Jennifer Lee
Abstract:: Coho salmon smolts (Oncorhynchus kisutch) were transported at low and high densities. (12 and 120 g/L) for short and long periods (4 and 12 h). Because smolts can be transplanted directly to seawater, half of the fish in each treatment were transported to tanks containing seawater and half to tanks...
Resource Type:: Dissertation
Full Text:: thyroxin concentration and gill Na-K-ATPase activity were not affected by transportation. Increased

Physiology of interrenal function in juvenile coho salmon (Oncorhynchus kisutch) and effects of hatchery rearing practices

Creator:: Patino, Reynaldo
Abstract:: Periodic determinations of plasma hormone levels suggested that changes in interrenal activity are unrelated to changes in thyroidal or gonadal activity during development (smoltification) of juvenile coho salmon (Oncorhynchus kisutch). Moreover, in an experiment where fish were reared under various conditions of crowding and water inflow rate, it appeared that...
Resource Type:: Dissertation
Full Text:: appeared that changes of interrenal activity were also unrelated to changes in gill Na/K-ATPase activity

Survival and behavior of juvenile steelhead trout (Oncorhynchus mykiss) in two small estuaries in Oregon

Creator:: Romer, Jeremy D.
Abstract:: A number of steelhead (Oncorhynchus mykiss) populations are at risk throughout Oregon, including five populations that are federally listed as threatened or endangered. However, little is known about behavior and survival of these fish as they transition from freshwater to seawater. We investigated whether estuarine survival varies on a temporal...
Resource Type:: Masters Thesis
Full Text:: , statistical advice and edits, Michael Glynn for assistance running the ATP micro-assays, Steve Johnson for

Resistance of coho salmon (Oncorhynchus kisutch) and steelhead trout (Salmo gairdneri) stocks and transferrin genotypes to bacterial kidney disease and vibriosis

Creator:: Winter, Gary Wayne
Abstract:: Juvenile coho salmon (Oncorhynchus kisutch) and steelhead trout (Salmo gairdneri) of different stocks and three transferrin genotypes (AA, AC, and CC), all reared in identical or similar environments, were experimentally infected with the causative agent of bacterial kidney disease (BKD) or Vibrio anguillarum. Mortality due to the pathogens was compared...
Resource Type:: Masters Thesis
Full Text:: ., and A. K. Johnson. 1977. Relative yield of two transferrin phenotypes in coho salmon. Prog. Fish-Cult

The adaptive significance of certain enzyme polymorphisms in steelhead trout (Salmo gairdneri)

Creator:: Redding, Joseph Michael
Abstract:: Mean weights, lengths, and condition factors of three isozyme phenotypes of lactate dehydrogenase (LDH) enzyme differed significantly for experimentally reared winter steelhead trout (Salmo gairdneri) fry. Time of emergence from the gravel was unrelated to LDH phenotype. Relative mortality of the phenotypes between eyed-egg stage and emergence was unaffected by...
Resource Type:: Masters Thesis
Full Text:: polymorphisms have been correlated to environmental temperature (Merritt 1972; Mitton and Koehn 1975). Johnson

Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation

Creator:: Pring, Cynthia Kay
Resource Type:: Masters Thesis
Full Text:: the S.E. bar) and b) Gill (Na+K)ATPase enzyme activity (mean ± S..E, n below the S.E. bar) observed in

Physiological ecology of juvenile Chinook salmon (Oncorhynchus tshawytscha) rearing in fluctuating salinity environments

Creator:: Hackmann, Crystal R.
Abstract:: Estuaries provide juvenile salmonids with highly productive feeding grounds, refugia from tidal fluctuations and predators, and acclimation areas for smoltification. However, these dynamic, fluctuating salinity environments may also be physiologically stressful to growing juvenile fish. In order to evaluate the costs and benefits of estuarine marshes to juvenile Chinook salmon,...
Resource Type:: Masters Thesis
Full Text:: (Standard Error) of K, Ca, and Mg levels from Fluctuating Salinity experiment .74 2.1 Stomach content

Influences of environmental acidification on salmonid reproduction

Creator:: Weiner, Gary S.
Abstract:: Reproduction of salmonid fishes in acidic water was studied using the rainbow trout (Salmo gairdneri). Adult trout were exposed to various levels of hydrogen ion (pH levels 4.5, 5.0, 5.5, and control [6.5 to 7.1]) during the final 6 weeks of reproductive maturation. Reduced survival rates of the progeny of...
Resource Type:: Masters Thesis
Full Text:: 5.8. Johnson and Webster (1977) determined that spawning female brook trout avoided upwellings of pH

Linking Moral Obligations, Assumption-based Research, and Structured Decision Making to Inform Bull Trout Recovery

Creator:: Brignon, William R.
Abstract:: More than 1500 species of plants and animals in the United States are listed as threatened or endangered under the Endangered Species Act (ESA). The U.S. Departments of Interior and Commerce are required, under Section 4(f)(1) of the ESA, to develop recovery plans for ESA-listed species under the respective agency...
Resource Type:: Dissertation
Full Text:: . L. Lindsey, K. C. Maguire, and B. Mersey. 2011. Has the Earth's sixth mass extinction already

Habitat selection of hatchery and wild juvenile salmonids in Eagle Creek Basin, Oregon

Creator:: Brignon, William R.
Abstract:: To best manage Eagle Creek National Fish Hatchery and minimize any negative impacts that the current hatchery program may be having on Endangered Species Act-listed salmonids in the Eagle Creek Basin, I determined if wild fish are being displaced from preferred habitats by hatchery salmonids Oncorhynchus spp. This thesis had...
Resource Type:: Masters Thesis
Full Text:: .............................................113 K Logistic regression model selection results used to describe a species presence and absence

ScholarsArchive@OSU

Hormonal and osmoregulatory aspects of smoltification in coho salmon, Oncorhynchus kisutch

Physiology of interrenal function in juvenile coho salmon (Oncorhynchus kisutch) and effects of hatchery rearing practices

Survival and behavior of juvenile steelhead trout (Oncorhynchus mykiss) in two small estuaries in Oregon

Resistance of coho salmon (Oncorhynchus kisutch) and steelhead trout (Salmo gairdneri) stocks and transferrin genotypes to bacterial kidney disease and vibriosis

The adaptive significance of certain enzyme polymorphisms in steelhead trout (Salmo gairdneri)

Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation

Physiological ecology of juvenile Chinook salmon (Oncorhynchus tshawytscha) rearing in fluctuating salinity environments

Influences of environmental acidification on salmonid reproduction

Linking Moral Obligations, Assumption-based Research, and Structured Decision Making to Inform Bull Trout Recovery

Habitat selection of hatchery and wild juvenile salmonids in Eagle Creek Basin, Oregon

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