Results 21 to 30 of about 3,299 (139)

Ancient DNA analysis of archaeological specimens extends Chinook salmon's known historic range to San Francisco Bay's tributaries and southernmost watershed.

PLoS ONE, 2021
Understanding a species' historic range guides contemporary management and habitat restoration. Chinook salmon (Oncorhynchus tshawytscha) are an important commercial and recreational gamefish, but nine Chinook subspecies are federally threatened or ...
Richard B Lanman, Linda Hylkema, Cristie M Boone, Brian Allée, Roger O Castillo, Stephanie A Moreno, Mary Faith Flores, Upuli DeSilva, Brittany Bingham, Brian M Kemp   +9 more
doaj   +1 more source

Endangered predators and endangered prey: Seasonal diet of Southern Resident killer whales.

PLoS ONE, 2021
Understanding diet is critical for conservation of endangered predators. Southern Resident killer whales (SRKW) (Orcinus orca) are an endangered population occurring primarily along the outer coast and inland waters of Washington and British Columbia ...
M Bradley Hanson, Candice K Emmons, Michael J Ford, Meredith Everett, Kim Parsons, Linda K Park, Jennifer Hempelmann, Donald M Van Doornik, Gregory S Schorr, Jeffrey K Jacobsen, Mark F Sears, Maya S Sears, John G Sneva, Robin W Baird, Lynne Barre   +14 more
doaj   +1 more source

Jellyfish in Pacific salmon food

Известия ТИНРО, 2022
Ctenophores, hydroid jellyfish, appendicularians, salpas, and the pteropoda mollusk Clione limacina, conditionally combined into the group of “jellyfish”, are found in the food of all Pacific salmon — chum salmon, pink salmon, sockeye salmon, coho salmon
A. F. Volkov
doaj   +1 more source

Partitioning the influence of Chinook salmon productivity and stock-specific abundance on the southern resident killer whale population

Global Ecology and Conservation
The southern resident killer whale (Orcinus orca, SRKW) population is listed as endangered in both the U.S. and Canada. Reduced prey availability, especially of Chinook salmon, is recognized as an important limiting factor for this population.
Fanny Couture, Scott Toews, Sheila Thornton   +2 more
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

The combined effects of predation, fishing, and ocean productivity on salmon species targeted by marine mammals in the northeast Pacific.

PLoS ONE
Along the northeast Pacific coast, the salmon-eating southern resident killer whale population (SRKW, Orcinus orca) have been at very low levels since the 1970s.
Fanny Couture, Villy Christensen, Carl Walters   +2 more
doaj   +1 more source

Increased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha.

PLoS ONE, 2018
The Columbia River and its tributaries provide essential spawning and rearing habitat for many salmonid species, including Chinook salmon (Oncorhynchus tshawytscha).
Bobbi M Johnson, Brian M Kemp, Gary H Thorgaard   +2 more
doaj   +1 more source

Modeling timing and size of juvenile Chinook salmon out-migrants at three Elwha River rotary screw traps: a window into early life history post dam removal

Frontiers in Ecology and Evolution, 2023
Chinook salmon (Oncorhynchus tshawytscha) populations express diverse early life history pathways that increase habitat utilization and demographic resiliency.
Martin C. Liermann, Aimee H. Fullerton, George R. Pess, Joseph H. Anderson, Sarah A. Morley, Michael L. McHenry, mcKenzi N. Taylor, Justin Stapleton, Mel Elofson, Randall E. McCoy, Todd R. Bennett   +10 more
doaj   +1 more source

Short‐Term 6PPD‐Q Exposure alters Tight‐Junction‐Related Gene Expression Without Acute Lethality in Japanese Medaka Oryzias latipes

Journal of Applied Toxicology, EarlyView.
ABSTRACT 6PPD‐quinone (6PPD‐Q), a transformation product of the tire antioxidant 6PPD, causes acute mortality in several salmonid species, but its toxicity varies markedly among fish species. Disruption of vascular‐barrier integrity and inflammatory signaling has been proposed as a key mechanism of 6PPD‐Q toxicity.
Kyoshiro Hiki
wiley   +1 more source

Remnant salmon life history diversity rediscovered in a highly compressed habitat

Evolutionary Applications
Chinook salmon (Oncorhynchus tshawytscha) display remarkable life history diversity, underpinning their ability to adapt to environmental change.
Sara A. Hugentobler, Anna M. Sturrock, Malte Willmes, Tasha Q. Thompson, Rachel C. Johnson, Flora Cordoleani, Natalie J. Stauffer‐Olsen, George Whitman, Mariah H. Meek   +8 more
doaj   +1 more source