Index Catalog // ScholarsArchive@OSU

Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California

Creator:: Hjort, Randy Carl
Abstract:: Phenotypic similarities of coho salmon (Oncorhynchus kisutch) stocks from Oregon, Washington, and California were compared using agglomerative and divisive cluster analyses. The phenotypic characters evaluated included the following: 1) the isozyme gene frequencies of transferrin and phosphoglucose isomerase; 2) the life history characters time of peak spawning and proportion of...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Fisheries and Wildlife presented on August 15, 1979 Title: PHENOTYPIC COMPARISON

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:: . Title: Linking Moral Obligations, Assumption-based Research, and Structured Decision Making to Inform

Lack of Seasonality for Cercariae of Nanophyetus salmincola in the Snail Juga silicula

Creator:: Lofton, Shelby N.
Abstract:: Nanophyetus salmincola is a well-studied parasite of their definitive mammal hosts. However, the conditions that signal the time for shedding of N. salmincola cercariae from their first host, the juga snail (Juga silicula), is not fully understood. A digenetic trematode indigenous to the American Pacific Northwest, N. salmincola can be...
Resource Type:: Presentation
Full Text:: Santiam River 0 5 10 15 20 25 Aug Sept Oct Nov Dec Jan Feb Mar April May June July Te m p ( °C

Behavioral and physiological indicators of stress in sablefish, Anoplopoma fimbria

Creator:: Spencer, Mara L.
Abstract:: The development of assays for stress in marine fishes is vital for studying the impacts of bycatch in fisheries and for determining the health of fish being cultured or used in research. This research developed behavioral and physiological assays for stress in juvenile sablefish, Anoplopoma fimbria, a species that comprises...
Resource Type:: Masters Thesis
Full Text:: determining the health of fish being cultured or used in research. This research developed behavioral and

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

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:: people involved in the Oregon Cooperative Fish and Wildlife Research Unit provided support, excellent

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:: grateful to everyone in the Oregon Cooperative Fish and Wildlife Research Unit for their generosity in

Passage, migration behavior, and autoecology of adult Pacific lamprey at Winchester Dam and within the North Umpqua River Basin, Oregon, USA

Creator:: Lampman, Ralph Tatsuo
Abstract:: The extensive reduction in adult Pacific lamprey (Entosphenus tridentatus) counts at many hydroelectric dams in the northwestern USA signals a substantial decline in lamprey numbers across the entire region in the past 40 to 50 years. Among the many potential causes of this decline, obstruction of migration routes has likely...
Resource Type:: Masters Thesis
Full Text:: Umpqua River basin in southwest Oregon, USA, I focused on the following three research goals: 1) to

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

Creator:: Pring, Cynthia Kay
Resource Type:: Masters Thesis
Full Text:: experience. This research was funded by National Marine Fisheries Service and the Oregon Cooperative

Effects of steelhead trout (Oncorhynchus mykiss) on chinook salmon (O. tshawytscha) behavior and physiology

Creator:: Kelsey, Denise A.
Abstract:: Three experiments were designed to determine if and how steelhead trout, Oncorhynchus mykiss, may affect chinook salmon, O. tshawytscha, when they are confined together as in a raceway or on a barge. We observed groups of chinook and steelhead together and groups of only chinook in a behavioral experiment to...
Resource Type:: Masters Thesis
Full Text:: everyone in the Oregon Cooperative Fisheries Research Unit for the support and knowledge given to me. I

Effects of stress on the reproductive performance and physiology of rainbow trout (Oncorhynchus mykiss)

Creator:: Contreras Sánches, Wilfrido M.
Abstract:: The environment under which fish are maintained as broodstock before reproduction is often stressful; however, the impact of stress on broodstock and gamete quality is not well known. We investigated the effects of stress over the final stages (i.e. the 3 months preceding ovulation) of sexual maturation of female rainbow...
Resource Type:: Masters Thesis
Full Text:: and Dr. Li for his comments. I thank everyone in the Oregon Cooperative Fisheries Research Unit for

ScholarsArchive@OSU

Phenotypic comparison of hatchery and wild coho salmon (Oncorhynchus kisutch) in Oregon, Washington, and California

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

Lack of Seasonality for Cercariae of Nanophyetus salmincola in the Snail Juga silicula

Behavioral and physiological indicators of stress in sablefish, Anoplopoma fimbria

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

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

Passage, migration behavior, and autoecology of adult Pacific lamprey at Winchester Dam and within the North Umpqua River Basin, Oregon, USA

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

Effects of steelhead trout (Oncorhynchus mykiss) on chinook salmon (O. tshawytscha) behavior and physiology

Effects of stress on the reproductive performance and physiology of rainbow trout (Oncorhynchus mykiss)

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