Results 41 to 50 of about 8,700 (238)

Genetic and Ecological Management of Pacific Salmon Fisheries for the 21st Century

Fisheries Management and Ecology, EarlyView.
ABSTRACT Based on ecological adaptation theory, tremendous effort is being spent on measures that are eliminating salmon hatcheries and fishing opportunities with the intention of protecting wild runs deemed to be of particular genetic importance to the survival of the species.
Randall E. Brummett, Ian G. Cowx, Devin M. Bartley   +2 more
wiley   +1 more source

Warming Ocean Conditions Relate to Increased Trophic Requirements of Threatened and Endangered Salmon.

PLoS ONE, 2015
The trophic habits, size and condition of yearling Chinook salmon (Oncorhynchus tshawytscha) caught early in their marine residence were examined during 19 survey years (1981-1985; 1998-2011). Juvenile salmon consumed distinct highly piscivorous diets in
Elizabeth A Daly, Richard D Brodeur
doaj   +1 more source

Characterizing juvenile salmon predation risk during early marine residence.

PLoS ONE, 2021
Predation mortality can influence the distribution and abundance of fish populations. While predation is often assessed using direct observations of prey consumption, potential predation can be predicted from co-occurring predator and prey densities ...
Elizabeth M Phillips, John K Horne, Jeannette E Zamon   +2 more
doaj   +1 more source

Sex‐Specific Atlantic Salmon Upstream Passage and Fallback at a Natural Cascade After Dam Removal

Fisheries Management and Ecology, EarlyView.
ABSTRACT In the Boquet River (NY, USA) a low‐head dam set above a ~200‐m bedrock cascade was removed in 2015. We used radio‐telemetry to assess landlocked Atlantic salmon passage at the remaining cascade (2020, 2022). Across years, 52% of males (13/25) attempted cascade passage whereas females made no discernable attempts (0/11).
Kurt C. Heim, Jonah L. Withers, William R. Ardren, Laurie A. Earley, David Minkoff, Theodore Castro‐Santos   +5 more
wiley   +1 more source

Are salmon-derived nutrients being incorporated in food webs of invaded streams? Evidence from southern Chile

Knowledge and Management of Aquatic Ecosystems, 2012
Using stable isotope analyses of N and C we present preliminary evidence of marine-derived nutrients from introduced Chinook salmon (Oncorhynchus tshawytscha Walbaum) in stream food webs of Laguna Los Patos, NW Patagonia.
Arismendi I., Soto D.
doaj   +1 more source

Expression of corticoid‐regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation

Journal of Fish Biology, EarlyView.
Abstract In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors responsible for intracellular corticosteroid regulation are glucocorticoid receptors (grs) and the ...
Makoto Kusakabe, Takashi Yada, Graham Young, Amy M. Regish, Stephen D. McCormick   +4 more
wiley   +1 more source

Genomic region associated with run timing has similar haplotypes and phenotypic effects across three lineages of Chinook salmon

Evolutionary Applications, 2021
Conserving life‐history variation is a stated goal of many management programs, but the most effective means by which to accomplish this are often far from clear.
Stuart C. Willis, Jon E. Hess, Jeff K. Fryer, John M. Whiteaker, Shawn R. Narum   +4 more
doaj   +1 more source

Northern cod (Gadus morhua) movement: insights from acoustic telemetry and genomics

Journal of Fish Biology, EarlyView.
Abstract Knowledge of the timing and diversity of fish movements within a commercially exploited stock complex is required to ensure the sustainability of fisheries. Although migration can be driven by environmental factors, genomic mechanisms also play an important role in this complex life‐history trait. The northern cod (Gadus morhua) stock complex,
M. Lisette Delgado, Nicole Smith, Frederick Whoriskey, Steve Devitt, Emilie Novaczek, Corey J. Morris, Tony Kess, Ian Bradbury, Sara Iverson, Paul Bentzen, Daniel E. Ruzzante   +10 more
wiley   +1 more source

Preferred and alternate linear mixed-effects models of factors influencing survival of Salmon River spring Chinook salmon, Salmon River fall Chinook salmon, Salmon River summer steelhead trout, and Scott River fall Chinook salmon, 1980–2007.

, 2014
Preferred and alternate linear mixed-effects models of factors influencing survival of Salmon River spring Chinook salmon, Salmon River fall Chinook salmon, Salmon River summer steelhead trout, and Scott River fall Chinook salmon, 1980–2007.
Michael L. Johnson (568940), Marcel Holyoak (352463), Peter B. Moyle (414573), Rebecca M. Quiñones (414576)   +3 more
core   +1 more source

Can late stage marine mortality explain observed shifts in age structure of Chinook salmon?

PLoS ONE, 2021
Chinook salmon (Oncorhynchus tshawytscha) populations have experienced widespread declines in abundance and abrupt shifts toward younger and smaller adults returning to spawn in rivers.
Kaitlyn A Manishin, Curry J Cunningham, Peter A H Westley, Andrew C Seitz   +3 more
doaj   +1 more source