Index Catalog // ScholarsArchive@OSU

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:: . 170 160 150 o 140 E 130 120 110 100 (A) I-w aayi aayi aayl4 145 140 135 130 5 125 E

Creator:: Gudjonsson, Sigurdur
Abstract:: A hierarchical classification system of Iceland's watersheds and rivers is presented. The classification is based on Iceland's substrate, climate, water, biota, and human cultural influences. The geological formations of Iceland are very different in character depending on their age and formation history. Three major types of formations occur: Tertiary, Plio-Pleistocene,...
Resource Type:: Dissertation
Full Text:: Iceland is situated in the North Atlantic Ocean, between 63° and 67° N latitude and 13° and 25° W

Creator:: Alabi, Nathaniel Sigismund
Abstract:: This study was conducted to investigate the distribution of glutathione peroxidase (GSH-Px) and selenium in semen of the boar, bull, ram and stallion, and in the reproductive tissues of the boar, bull and ram. The effect of repeated noncryoprotective freeze-thawing on GSH-Px activity was also studied. Both hydrogen peroxide (H₂0₂)...
Resource Type:: Masters Thesis
Full Text:: Mills and Randall (1958) in erythrocytes and, later, in other tissues. Evidence that peroxidase in

Creator:: Clements, Shaun
Abstract:: The present study investigated the neurocrine and neuroendocrine control of locomotor activity, habitat choice, social behavior, and migratory behavior in juvenile chinook salmon (Oncorhynchus tshawytscha). This was achieved by the manipulation of three neurotransmitter systems; serotonin (5-HT), dopamine (DA), y-amino-n-butyric acid (GABA) and the neuropeptide corticotropin-releasing hormone (CRH). Chemicals were...
Resource Type:: Dissertation
Full Text:: Clements, Carl B. Schreck, Donald A. Larsen* and Walton W. Dickhoff Oregon Cooperative Fish and Wildlife

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:: ). Each value represents the mean ± SE for a sample size of 30. 25000 o 20000 0 w E 15000 a 0 I W

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:: view on the role of science in society, I would have to greatly thank - Dr. Hiram W. Li. My numerous

Creator:: Knoebl, Iris
Abstract:: The work presented in this dissertation examines possible modes of action for growth inhibition by anthropogenic endocrine disrupting chemicals (EDCs) as well as endogenous hormones associated with growth in fish. Using the sheepshead minnow (SHM) (Cyprinodon variegatus) as a model, I developed methods to examine perturbations in the endocrine axis...
Resource Type:: Dissertation
Full Text:: Tissues Bone Muscle PHGHR' V '/y J _J &>w ('U D b Q '..l II L t 11 IGF-1 R GROWTH Figure 2.1. An

Creator:: Rose, William Jackson
Abstract:: Experiments were conducted to determine: 1) the effects of exogenous melatonin and reduced photoperiod on molting and growth of the winter pelage (fur) and 2) whether changes in serum prolactin levels of treated and control mink during this same period were correlated with growth of winter fur. Adult and kit...
Resource Type:: Dissertation

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