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Browsing Fisheries by Title
Now showing items 47-66 of 238
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Early marine growth and consumption demand of juvenile pink salmon in Prince William Sound and the northern coastal Gulf of Alaska
(2006)Although early marine growth has repeatedly been correlated with overall survival for Pacific salmon (Oncorhynchus spp.), we currently lack a mechanistic understanding of the timing, magnitude, and source of stage-specific ... -
Ecological, morphological, genetic, and life history comparison of two sockeye salmon populations, Tustumena Lake, Alaska
(1998)Populations can differ in both phenotypic and molecular genetic traits. Phenotypic differences likely result from differential selection pressures in the environment, whereas differences in neutral molecular markers result ... -
Ecology of stream-dwelling fishes in response to inter-annual variation in the abundance of spawning sockeye salmon
Each year, millions of salmon enter the final stage of their life-cycle and migrate back towards their natal watersheds to reproduce. After accumulating >95% of their adult body mass in marine environments, salmon spawning ... -
Economic Effects of Multispecies Catch Share Management
Catch share management is a common and increasingly relied upon form of fisheries management in which, frequently, shares of a hard total allowable catch are allocated to individuals or groups of harvesters. A style of ... -
Ecosystem dynamics of the Aleutian Islands
(2007)Located between Asia and America and extending over a 1,000 mi., the Aleutian Islands have commonly been studied in a partial or fragmented manner. This dissertation presents the use of multiple spatial scales to distinguish ... -
The Effect of Elevated Holding Temperatures on Adult Spring Chinook Salmon Reproductive Success
(University of Washington, 1990)A three-pronged study was designed to investigate the possible link between timber harvest-related temperature elevations and spring chinook salmon (Oncorhynchus tshawytscha) reproductive success. The study had three ... -
Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister)
Dungeness crab (Cancer magister) eggs and larvae were exposed to laboratorycontrolled, low-pH seawater in an effort to assess current and predicted-future impacts of Ocean Acidification (OA) on hatching success, survival ... -
Effectiveness of managed gene flow to reduce genetic and phenotypic change associated with captive breeding of Chinook salmon
Captive breeding programs can rebuild depressed populations and aid in the recovery of threatened or endangered species. However, associated genetic and phenotypic changes may decrease the fitness of captive individuals ... -
Effects of dietary histamine on fish meal protein quality to rainbow trout (Oncorhynchus mykiss)
(1992)Dietary histamine, and its derivative, gizzerosine, cause gizzard erosion and black vomit disease in chickens. Rainbow trout (Oncorhynchus mykiss) and coho salmon (Oncorhynchus kisutch) fed fish meal that evoked black vomit ... -
The Effects of Ocean Acidification on Multiple Life History Stages of the Pacific Oyster, Crassostrea gigas: Implications for Physiological Trade-offs
(2014-04-30)As global climate change accelerates, due in large part to increasing emissions of carbon dioxide and other greenhouse gases from fossil fuel use, agriculture, and large-scale changes in land use, natural ecosystems bear ... -
Effects of Urbanization on the Biological Integrity of Puget Sound Lowland Streams: Restoration with a Biological Focus
(University of Washington, 2000)Rapid urbanization threatens the condition of streams and rivers across the Pacific Northwest. Efforts to protect and control urban streams have traditionally focused on physical channel conditions and chemical water ... -
Effects of variation in the visual environment on the feeding and catchability of Alaska fishes
Aquatic animals use vision to perform tasks such as feeding, threat detection and avoidance, orientation, and social behavior. Thus, changes in light and water clarity can disrupt processes that affect the biological ... -
The effects of wetland loss and restoration on the foraging performance and growth potential of Juvenile Chinook salmon in Pacific Northwest estuaries
During the transition of juveniles from fresh water to estuarine and coastal environments, the survival of Pacific salmon (Oncorhynchus spp.) can be strongly size-selective and cohort abundance is partly determined. Because ... -
Endocrine growth regulation in salmon: mechanisms of nutritional control of the growth axis
(2003)Vertebrate growth is regulated by the growth endocrine axis, which consists of pituitary growth hormone (GH), liver insulin-like growth factor-I (IGF-I), and IGF binding proteins (IGFBPs). Studies were conducted to ... -
English sole transport during pelagic stages on the Pacific Northwest coast and habitat use by juvenile flatfish in Oregon and Washington estuaries
(2002)Trawl surveys of four West Coast estuaries were conducted to determine the spatial and temporal patterns of juvenile English sole residence during 1998--2000. Additional data from 1983--1988 was also analyzed. Juvenile ... -
Environmental and Systemic Exposure Assessment for Green Sturgeon Following Application of Imidacloprid for the Control of Burrowing Shrimp in Willapa Bay, Washington
(2014-02-24)The neonicotinoid insecticide imidacloprid (IMI) has been proposed for the control of burrowing shrimp on oyster beds in Willapa Bay, Washington. Use of IMI may be denied if it is shown that ESA-listed green sturgeon are ... -
Environmental influences on distribution and abundance of capelin (Mallotus villosus) in the Gulf of Alaska
To support ecosystem-based management of Alaska’s marine resources, there is a need to improve our understanding of how climate-related perturbations in ocean conditions and long-term warming affect distributions and ... -
Environmental influences on North Pacific salmon abundance and marine fish recruitment
(2013-07-23)I investigated common patterns in North Pacific salmon abundance and marine fish recruitment and environmental drivers of these patterns. In Chapter 1 I identified patterns of covariation in the abundance of regional groups ... -
EPIBENTHIC INVERTEBRATES AND JUVENILE CHUM SALMON (ONCORHYNCHUS KETA) PREY AVAILABILITY ALONG AN ECO-ENGINEERED SHORELINE: A CASE STUDY AT THE SEAWALL IN SEATTLE, WASHINGTON
Shoreline development can alter coastal processes resulting in habitat loss and species assemblage shifts, but eco-engineered enhancements, or modifications to hard structures that mimic or support ecological processes, ...