Index Catalog // ScholarsArchive@OSU

Development of a progeny marker for steelhead

Creator:: Shippentower, Gene E.
Abstract:: This study was undertaken to determine if strontium chloride could be used to create a trans-generational otolith mark in steelhead (Oncorhynchus mykiss). I completed two strontium injection trials and a survey of juvenile steelhead from various steelhead hatcheries. The two trials measured Sr:Ca ratios in otoliths in response to injections...
Resource Type:: Masters Thesis
Full Text:: . Douglas Markle and Dr. Roger Nielsen for providing assistance during my graduate work. I would like

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Creator:: Seigle, John C.
Abstract:: With increased resource development on the western Arctic coastal plain of Alaska (especially within the oil extraction industry) it is important to understand the basic life history attributes of whitefish stocks in the region in order to ensure appropriate management. These fish are a crucial part of subsistence harvests for...
Resource Type:: Masters Thesis
Full Text:: science. I am indebted to Roger Nielsen for his guidance in the use of electron microprobe technology

Ecological relation of sympatric steelhead and resident rainbow trout in the Deschutes River, Oregon

Creator:: Zimmerman, Christian E.
Abstract:: Sympatric steelhead and resident rainbow trout (Oncorhynchus mykiss) are known to exist in many rivers throughout the Pacific Rim. Whether sympatric steelhead and resident rainbow trout are polymorphisms within a single gene pool or two reproductively isolated populations has significant implications concerning the study and conservation of this polytypic species....
Resource Type:: Dissertation
Full Text:: this dissertation. Gordon Reeves, Hiram Li, Doug Markie, Mark Hixon, and Roger Nielsen served as a

Qualitative analysis of sardine and anchovy oscillations and implications for the management of sardine and anchovy fisheries in Oman

Creator:: Al-Jufaili, Saud M.
Abstract:: Sardines and anchovies are small pelagic fishes that support important commercial fisheries around the world. This project reviews the inverse cyclic behavior in the abundance of these two stocks, which is a striking feature in many regions. In addition, the project used qualitative loop analysis techniques to analyze the feasible...
Resource Type:: Dissertation
Full Text:: Fisheries in Oman. Abstract approved: David B. Sampson Sardines and anchovies are small pelagic fishes

Temporal Variation in the Prey Resource Portfolio of Juvenile Salmonids During Freshwater Rearing

Creator:: Brady, Megan E.
Abstract:: Freshwater rearing is a critical period in the life cycle of anadromous salmonids, known to produce carry-over effects mediating long-term growth and survival. Freshwater growth is primarily determined by food availability and temperature. While many species of salmon rear in freshwater for a full year or longer, most trophic ecology...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Jonathan B. Armstrong

Spatial and temporal scales of genetic change in two overfished rockfishes

Creator:: Gomez-Uchida, Daniel
Abstract:: Pacific rockfishes (genus Sebastes) have attracted wide scientific and public interest from an evolutionary, fishery and conservation standpoints. This dissertation addresses several hypotheses involving spatial and temporal scales of genetic change in two overfished rockfishes, darkblotched (S. crameri) and canary rockfish (S. pinniger), using statistical analyses of genetic variation within...
Resource Type:: Dissertation
Full Text:: and accomplish them. I am indebted to Jennifer L. Nielsen, Ian A. Fleming, George W. Boehlert and

Effects of acute stress and exercise on subsequent seawater adaptation and cortisol dynamics in juvenile steelhead trout (Oncorhynchus mykiss)

Creator:: Liebert, Anja M.
Abstract:: The present study investigated the effects of stress and exercise on seawater (SW) adaptation and cortisol dynamics in juvenile steelhead (Oncorhynchus mykiss). To examine the effects of stress, fish acclimated to freshwater (FW) were subjected for 3 hours to confinement stress in FW, and subsequently SW (25 ppt) was introduced...
Resource Type:: Masters Thesis
Full Text:: (Oncorhynchus mykiss). Abstract approved: Carl B. Schreck The present study investigated the effects of

Carp, Climate, and Water Quality: Applying Systems Modeling to Ecosystem Recovery in Malheur Lake

Creator:: Pearson, James B.
Abstract:: Shallow lakes exist in either a clear or turbid state, with the clear state characterized by an abundance of aquatic macrophytes, diverse aquatic biota, low water column nutrients and phytoplankton biomass, whereas the turbid state is characterized by the opposite. These two distinct states are maintained by reinforcing (positive) feedback...
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ Jason B. Dunham Shallow

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:: Impair Sablefish, Anoplopoma fimbria, Immune System Function Abstract approved: Carl B. Schreck

Early self-sorting behavior in Chinook salmon is correlated with variation in growth, behavior and morphology later in life.

Creator:: Unrein, Julia R.
Abstract:: Juvenile Chinook salmon (Oncorhynchus tshawytscha) exhibit an array of life history tactics in Oregon's Willamette River Basin, yet we do not know to what extent it is driven by phenotypic plasticity or whether it is predetermined and how conditions in the early rearing environment may affect phenotype expression. We have...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Carl B. Schreck Juvenile Chinook salmon (Oncorhynchus tshawytscha) exhibit an array of life

ScholarsArchive@OSU

Development of a progeny marker for steelhead

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Ecological relation of sympatric steelhead and resident rainbow trout in the Deschutes River, Oregon

Qualitative analysis of sardine and anchovy oscillations and implications for the management of sardine and anchovy fisheries in Oman

Temporal Variation in the Prey Resource Portfolio of Juvenile Salmonids During Freshwater Rearing

Spatial and temporal scales of genetic change in two overfished rockfishes

Effects of acute stress and exercise on subsequent seawater adaptation and cortisol dynamics in juvenile steelhead trout (Oncorhynchus mykiss)

Carp, Climate, and Water Quality: Applying Systems Modeling to Ecosystem Recovery in Malheur Lake

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

Early self-sorting behavior in Chinook salmon is correlated with variation in growth, behavior and morphology later in life.

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