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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:: AN ABSTRACT OF THE THESIS OF Ania M. Liebert for the degree of

Sex determination in Nile tilapia, Oreochromis niloticus: gene expression, masculinization methods, and environmental effects

Creator:: Sánchez, Wilfrido M. Contreras
Abstract:: Sex differentiation in fish is a labile process that allows sex inversion in several species. The inherent capacity of fish germ cells to differentiate into oocytes or spermatocytes constitutes a key factor allowing for functional sex inversion. This thesis set out to determine the mechanism involved in steroid-induced sex differentiation...
Resource Type:: Dissertation
Full Text:: Wilfrido M. Contreras Sanchez for the degree of Doctor of Philosophy in Fisheries Science presented on

A macroscopic to microscopic study of the effects of barotrauma and the potential for long-term survival in Pacific rockfish

Creator:: Pribyl, Alena L.
Abstract:: Depleted species of rockfish (Sebastes spp.) from the Northeast Pacific experience high discard mortality due to "barotrauma," induced from the rapid change in pressure during capture. Research suggests rockfish have the potential to survive barotrauma if immediately recompressed, but the potential for long-term recovery is unknown. In this project, we...
Resource Type:: Dissertation
Full Text:: from 4.5 ATA (35 m depth) and subsequent recompression using hyperbaric pressure chambers. We

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:: R Y M A R C H A P R IL 32 m e 5 1 5 16 although no main effects of sampling date on 170

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

Genetic and environmental variation in stress physiology among steelhead trout (Oncorhynchus mykiss)

Creator:: Sharpe, Cameron Saunders
Resource Type:: Masters Thesis
Full Text:: steroids (Henderson and Kime 1987). In teleosts, cortisol is catabolized into other steroids, principally

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

Creator:: Stone, Steven L.
Resource Type:: Masters Thesis
Full Text:: test (P<0.05) 35 Figure Page 4.2 Avoidance of 10-4 M L-serine (SER) in control water only and when

Characterization and the effects of stress on glucocorticoid receptors in the brains of chinook salmon (Oncorhynchus tshawytscha)

Creator:: Knoebl, Iris
Resource Type:: Masters Thesis
Full Text:: , Oregon. The fish were kept in 1 m circular tanks supplied with flow-through, pathogen free well-water

Effects of feeding level, temperature, and photoperiod on growth and selected scale characteristics of juvenile steelhead trout

Creator:: Boyce, Raymond R.
Resource Type:: Masters Thesis
Full Text:: , and nderful wife Cheri for typing the rinuscript. TABLE OF CONTENTS INTRODUCTION. 1 METHODS AND M

The energetic response to handling stress in juvenile coho salmon (Oncorhynchus kisutch)

Creator:: Davis, Lawrence E. (Lawrence Edward), 1965-
Abstract:: Various aspects of the energetic response to handling stress in juvenile coho salmon (Oncorhynchus kisutch) were examined. Fish were subjected to four different handling stressors in a Blazka-style respirometer. Stressed fish had rates of oxygen consumption that were higher than controls. The magnitude of the increase ranged from 139 to...
Resource Type:: Masters Thesis
Full Text:: -bladed propellor j. baffle k. inner swimming tube I. outer swimming tube m. removable baffle n

ScholarsArchive@OSU

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

Sex determination in Nile tilapia, Oreochromis niloticus: gene expression, masculinization methods, and environmental effects

A macroscopic to microscopic study of the effects of barotrauma and the potential for long-term survival in Pacific rockfish

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

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

Genetic and environmental variation in stress physiology among steelhead trout (Oncorhynchus mykiss)

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

Characterization and the effects of stress on glucocorticoid receptors in the brains of chinook salmon (Oncorhynchus tshawytscha)

Effects of feeding level, temperature, and photoperiod on growth and selected scale characteristics of juvenile steelhead trout

The energetic response to handling stress in juvenile coho salmon (Oncorhynchus kisutch)

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