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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Movement and survival of chinook salmon fry stocked in a stream with natural barriers to anadromous fish migration

Killinger, Gregory M. 14 April 2009 (has links)
This study examined the movement, habitat utilization, growth, and survival of hatchery incubated chinook salmon (<i>Oncorhynchus tshavvytscha</i>) fry stocked above a barrier falls on the Indian River, Chichagof Island, southeast Alaska. The Indian River contained significant potential salmonid rearing habitat, but was devoid of anadromous fish upstream of the barrier falls near tidewater. Approximately 50,000 and 260,000 chinook fry were stocked into Indian River in 1986 and 1988, respectively. The stream was divided into reaches which were stocked with equal numbers of fry. In 1988, fry also were stocked into beaver ponds connected to the stream. Each group of fry contained coded-wire tagged individuals, identified by stocking location. Fry movement was almost entirely downstream, with a substantial emigration during a spring flood immediately after the 1988 stocking. Most emigrating fry had been stocked in the lower stream section. / Master of Science
42

The effects of electroshock on immune function and disease progression in juvenile spring chinook salmon (Oncorhynchus tshawytscha)

VanderKooi, Scott P. 16 June 1999 (has links)
Electrofishing is a sampling tool commonly used by fisheries researchers. While much is known about the effects of electroshock on fish physiology, consequences to the immune system and disease progression have not received attention. To understand the effects of electroshock on immune function we undertook a comparison of electroshock and handling stress in regards to selected immune functions and disease progression in juvenile spring chinook salmon (Oncorhynchus tshawytscha). The handling stress treatment was included to insure the responsiveness of the fish. Our objectives were to determine the effects of electroshock on immune function, determine the mechanism of any observed alteration, and to determine the effects of electroshock on disease progression. Skin mucous lysozyme concentrations were not affected by exposure to electroshock. Respiratory burst activity may be enhanced in leukocytes immediately after an in vitro electroshock. Any effect in vivo, however, appears to be brief given the lack of differences observed 3 h after exposure. The specific immune response, measured as the ability of anterior kidney leukocytes to generate antibody producing cells (APC), was suppressed 3 h after electroshock, but recovered within 24 h. This response was similar in timing and magnitude to that of fish subjected to an acute handling stress. The mechanism of suppression is hypothesized to be via elevation of plasma cortisol concentrations. The ability to generate APC may be suppressed 7 d after electroshock, but it is not evident what mechanism is responsible for this suppression. There was some evidence that the progression of a Renibacterium salmoninarum (RS) infection was altered after exposure to an electroshock. Exposure to electroshock did not have a clear affect on the severity of infection or the number of mortalities, but may have accelerated the time to death in infected fish that died. The limited duration of specific immune suppression and lack of effect on mortality in RS infected fish lead us to conclude that electrofishing under the conditions we tested is a safe procedure in regards to immunity and disease. / Graduation date: 2000
43

The dynamics and effects of bacterial kidney disease in Snake River spring Chinook salmon (Oncorhynchus tshawytscha) /

Hamel, Owen Sprague, January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (p. 158-169).
44

Relationships among juvenile anadromous salmonids, their freshwater habitat, and landscape characteristics over multiple years and spatial scales in the Elk River, Oregon /

Burnett, Kelly M. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2002. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
45

The effects of harvesting procedures on physiological and biochemical properties of Chinook salmon (Oncorhynchus tshawytscha) white muscle prior to and during frozen storage : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Zoology in the University of Canterbury /

Cook, Denham G. January 2008 (has links)
Thesis (M. Sc.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (p. 116-124). Also available via the World Wide Web.
46

Nucleotide sequence and tissue-distribution of Chinook salmon hsp90 messenger RNA : response to heat shock, handling, and seawater, and comparison to plasma cortisol concentration /

Palmisano, Aldo Nicholas. January 1998 (has links)
Thesis (Ph. D.)--University of Washington, 1998. / Includes bibliographic references (leaves [97]-124).
47

Technologies for tissue preservation : the role of endogenous and exogenous antioxidants in preserving tissue function in chinook salmon, Oncorhynchus tshawytscha : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Biochemistry in the University of Canterbury /

Tuckey, Nicholas. January 2008 (has links)
Thesis (Ph. D.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (p. 123-146). Also available via the World Wide Web.
48

How the animals found their places : pattern detection, experimentation, and epistemology in a high desert stream fish assemblage /

White, Seth Michael. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2009. / Printout. Includes bibliographical references. Also available on the World Wide Web.
49

In vitro and in vivo comparisons of virulent and attenuated strains of the salmonid fish pathogen Renibacterium salmoninarum /

O'Farrell, Caroline Louise, January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 91-111).
50

Land-based polyculture of chinook salmon, Oncorhynchus tshawytscha; Manila clams, Tapes japonica (Deshyes); and red macroalgae, Palmaria mollis /

Moosapanah, G. Reza. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 1996. / Typescript (photocopy). Includes bibliographical references (leaves 128-138). Also available on the World Wide Web.

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