Browsing Fisheries by Title
Now showing items 186-205 of 238
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Sablefish (Anoplopoma fimbria) sperm: The physiology of activation and the development of a cryopreservation protocol
(2014-04-30)Sablefish (Anoplopoma fimbria) is a deep-water marine species in the Pacific Ocean with high commercial value. Limited information is available about male reproductive development and sperm physiology in sablefish or how ... -
Salmon Life Histories and Fisheries Management
Understanding the life histories of exploited aquatic taxa is important to sustainable fisheries management. Life history diversity has been shown to stabilize population dynamics through ‘portfolio effects’ which can ... -
The Salmon River estuary: restoring tidal inundation and tracking ecosystem response
(2005)The Salmon River estuary offered a unique opportunity to simultaneously evaluate several estuarine restoration projects and make comparisons with a reference, undiked portion of the estuary. Dikes installed in three locations ... -
Salmonid life history, phenology, and distribution within a large river basin
Where fishes are found, and in what temporal patterns and under which physical conditions, are basic questions of biology and management. Salmonid species occupy distinct habitats across their life stages, usually reproduce ... -
Salmonid Selection, Evolution, and Historical Abundance Patterns
Pacific salmon represent an important group of species both from both cultural and economic perspectives. Given the importance of salmonids in marine and freshwater ecosystems, as a component of human food security, it is ... -
Scientific Acoustic Data from Commercial Fishing Vessels: Eastern Bering Sea Walleye Pollock (Theragra chalcogramma)
(University of Washington Graduate School, 2012-01)Although the International Council on the Exploration of the Sea Working Group on Fisheries Acoustics, Science and Technology provided guidance on using commercial fishing vessels for collecting opportunistic acoustic ... -
Selection and Adaptation of Fitness-related traits in Coho Salmon
Selection is the primary force driving phenotypic differentiation and adaptive evolution, and understanding how and to what extent selection drives adaptive evolution remains a key challenge in evolutionary biology. A ... -
Selective consumption of sockeye salmon by brown bears: patterns of partial consumption, scavenging, and implications for fisheries management
Animal foraging requires a series of complex decisions that ultimately end with consumption of resources. The extent of consumption varies among consumers, including predator-prey systems; some predators always completely ... -
Sex steroid feedback regulation of pituitary gonadotropins during early secondary oocyte growth in coho salmon (Oncorhynchus kisutch) – a potential target of endocrine disruption.
In teleost fish as in other vertebrate species, the pituitary gonadotropins, follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh), are fundamentally involved in regulating physiological processes critical to the ... -
Shellfish aquaculture farms as foraging habitat for nearshore fishes and crabs in Puget Sound
Oyster reefs across North America have declined precipitously over the past 140 years. In Washington State, Olympia oyster Ostrea lurida reefs historically provided water filtration and nearshore structural habitat for ... -
Shoreline armoring disrupts marine-terrestrial connectivity across the nearshore ecotone
(2014-02-24)As the interface between land and sea, the nearshore (marine-terrestrial) ecotone converges at the intertidal zone, where the exchange of organic materials between ecosystems occurs in the form of beach wrack: piles of ... -
Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington
Body size, mediated through biotic and abiotic factors affecting growth, is fundamental in determining survival as larger animals are usually less vulnerable to predation, starvation, and extreme environmental conditions ... -
Spatial and temporal patterns of fertilization in black abalone (Haliotis cracherodii Leach, 1814): Analysis of surrogate gamete spawning experiments with application towards populations on San Nicolas Island, California
(2013-11-14)The endangered black abalone (Haliotis cracherodii) suffered devastating losses along the coasts of Southern California, primarily caused by the effects of withering syndrome. Subsequent recovery may be hindered by the ... -
The spatial dimensions of fisheries: improved use of spatial information into fisheries management and information for assessments
Until relatively recently, fisheries resources were managed as single homogeneous units and fisheries management conveniently ignored the presence of spatial heterogeneity in stocks. In nature, species are neither distributed ... -
Spatial modelling for monitoring and management of marine metapopulations
(2012-09-13)Accounting for spatial complexity provides a diversity of challenges for natural resource management. Challenges arise from uncertainties in spatial stock structure, heterogeneity in environmental and ecological constraints, ... -
Spatial variability of coral reef communities: implications for conservation of benthic and herbivorous fish communities across Hawaii
Over the last two decades there has been a proliferation of reports documenting the decline of coral reef systems across the globe (Gardner et al. 2003, Bellwood et al. 2004, Cote et al. 2005, Bruno and Selig 2007). In ... -
Species diversity and environmental variability: patterns and processes of lacustrine fish community responses in a variable world
Ecosystems are heterogeneous on multiple scales of space and time, and this variation in abiotic and biotic features confronts organisms with complex challenges. Climate change signals are also often heterogeneous across ... -
Stage-structured analysis and modeling of the Pacific razor clam (Siliqua patula) in a changing environment: investigation of population dynamics and harvest strategies using process models and simulation
(1996)The Pacific Razor Clam (Siliqua patula) populations along the Washington coast have experienced massive fluctuations in abundance since the 1950s. Since the 1980s, it has been hypothesized that some of the declines in ...