Browsing Fisheries by Title
Now showing items 171-190 of 238
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Quantification and regulation of thyroid stimulating hormone (TSH) and TSH messenger RNA in salmon
(1997)Thyroid activity is regulated by the hypothalamic-pituitary-thyroid axis. Using a recently developed radioimmunoassay (RIA) for coho salmon (Oncorhynchus kisutch) thyroid stimulating hormone (TSH), an in vitro pituitary ... -
Quantifying Features of Arctic Odontocete Echolocation and Marine Habitat Variation in West Greenland
Monitoring Arctic cetacean habitat use enables identification of biologically important regions and predictions of climate change effects, both of which are critical to conservation efforts. The beluga (Delphinapterus ... -
Quantifying food web interactions and limitations for native salmonids in Ross Lake, WA and implications for the introduction of anadromous salmonids
Food web function influences ecosystem productivity and plays a critical role in ecosystem services and conservation of species of concern. In reservoirs, existing and future changes to these ecosystems (e.g., invasive ... -
Quantifying Predator-Prey Interactions: Methods, Challenges, and Applications
Knowledge of predator-prey interactions is vital in many subfields of ecology, including food web ecology, behavioral ecology, and population ecology. Information on predator-prey interactions is obtained from a variety ... -
Quantifying the impact of two native predators on juvenile sockeye salmon survival in Lake Washington
Understanding the mechanisms regulating population fluctuations, such as births, reproduction, and deaths, remains a persistent question in ecology. Mortality can be incurred at any point during the lifecycle, but mortality ... -
Reaching management objectives given uncertainty: A management strategy evaluation of the eastern Bering Sea snow crab (Chionoecetes opilio) fishery
(2014-04-30)The snow crab (<italic>Chionoecetes opilio</italic>) population in the eastern Bering Sea historically supported a lucrative fishery, but was declared overfished in 1999. The subsequent rebuilding plan did not rebuild the ... -
Rebuilding mixed stock fisheries: lessons from the U.S. West Coast
Management of commercial fisheries is imperative to global food security, economies, and sustainability. However, common management frameworks are often challenged when species with differing sustainable exploitation rates ... -
The relationship between vessel traffic and noise levels received by killer whales and an evaluation of compliance with vessel regulations
Whale watching has become increasingly popular as an ecotourism activity around the globe and is beneficial for environmental education and local economies. Southern Resident killer whales (Orcinus orca) comprise an ... -
Reproductive biology of farmed purple-hinged rock scallop (Crassadoma gigantea)
Native species are increasingly chosen for aquaculture expansion to avoid negative environmental impacts associated with the introduction of foreign species. However, the culture of native species is not without risks, as ... -
Reproductive buffers on exploitation in male-only fisheries: Tanner Crab (Chionoecetes bairdi) management strategy evaluation case study
Eastern Bering Sea Tanner crab (Chionoecetes bairdi), one of Alaska's more cyclical fisheries, has one of the most complex harvest strategies of any Bering Sea-Aleutian Islands crab stock. This stock experiences major ... -
Reproductive success in wild pink salmon, Oncorhynchus gorbuscha
(2003)Reproductive success in pink salmon was investigated by examining the complex interactions among life history, morphological, and behavioral traits and their influence on offspring production. Reproductive success was ... -
Resource use and life history patterns of juvenile Coho and Chinook salmon in an Alaskan estuary
Estuaries are valuable nursery grounds for anadromous Pacific salmon supplying diverse habitats, quality foraging grounds, and a transition between freshwater and saltwater environments. By providing alternative rearing ... -
Response of Olympia oysters (Ostrea lurida) to changing environmental conditions
The Olympia oyster is an iconic oyster species in the Pacific Northwest with special significance in Puget Sound, WA. Oyster populations in the region were decimated to historic lows during the 20th century due to a number ... -
Responses of fishes and salamanders to instream restoration efforts in western Oregon and Washington
(2000)Thirty streams in western Oregon and Washington were sampled during summer and winter to determine the responses of juvenile salmonids, juvenile lamprey (Entosphenus tridentatus and Lampetra spp.), sculpin (Cottus spp.) ... -
Ringed seal (Pusa hispida) lair habitat, emergence timing, and reproductive ecology in relation to snow characteristics in a changing Arctic
Ringed seals (Pusa hispida) are ice-associated Arctic marine mammals that are a vital resource for Arctic Indigenous peoples, and are ecologically important as the primary prey for polar bears. These seals use snow-covered ... -
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 ...