Results 71 to 80 of about 3,299 (139)

Effects of cover and mesohabitat type on the abundance of young-of-the-year Chinook salmon

California Fish and Wildlife Journal
Snorkel surveys were conducted on the Sacramento River to investigate the relative importance of microhabitat and mesohabitat scales on the abundance of young of the year (YOY) Chinook salmon (Oncorhynchus tshawytscha), while taking into account temporal
Mark Gard, Sean Gallagher
doaj   +1 more source

Natural Variation in Drosophila melanogaster Clock PolyQ Length: Geographic Gradients and Functional Properties

Molecular Ecology, Volume 35, Issue 19, October 2026.
ABSTRACT Natural variation in circadian clock genes provides a powerful framework for understanding how organisms respond to environmental heterogeneity. The Clock (Clk) gene encodes a core transcriptional regulator of circadian rhythms and contains a polymorphic polyglutamine (polyQ) tract whose evolutionary significance remains unclear.
Maya Yair, Bettina Fishman, Martin Kapun, Eran Tauber   +3 more
wiley   +1 more source

Initial responses of Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) to removal of two dams on the Elwha River, Washington State, U.S.A.

Frontiers in Ecology and Evolution
Large dam removal is being used to restore river systems, but questions remain regarding their outcomes. We examine how the removal of two large dams in the Elwha River, coupled with hatchery production and fishing closures, affected population ...
George R. Pess, Michael L. McHenry, Keith Denton, Joseph H. Anderson, Martin C. Liermann, Roger J. Peters, John R. McMillan, Samuel J. Brenkman, Todd R. Bennett, Jeffrey J. Duda, Karrie M. Hanson   +10 more
doaj   +1 more source

Ecological implications of changing hatchery practices for Chinook salmon in the Salish Sea

Ecosphere, 2019
For over a century, hatchery programs have been used to subsidize natural salmon populations in order to increase fisheries opportunities and, more recently, to conserve declining natural populations.
Benjamin W. Nelson, Andrew O. Shelton, Joseph H. Anderson, Michael J. Ford, Eric J. Ward   +4 more
doaj   +1 more source

Ceratonova shasta infection in Sacramento River Chinook salmon

California Fish and Wildlife Journal
Field surveys and sentinel studies were conducted with juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento River between 2012 and 2022. Both Ceratonova shasta and Parvicapsula minibicornis were common myxozoan parasites of both juvenile ...
John Scott Foott
doaj   +1 more source

Estimating habitat availability for Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss) to inform reintroduction planning in the middle Snake River basin, USA

Frontiers in Ecology and Evolution
Anadromous fishes have been blocked from the middle Snake River basin since the construction of flood control, irrigation, and hydroelectric projects during the 19th and 20th centuries, culminating with the construction of Hells Canyon Dam (river ...
James R. Hatten, Jill M. Hardiman, Dennis A. Daw, Claire E. Couch, Tobias J. Kock   +4 more
doaj   +1 more source

Identifying drivers of demographic rates in an at‐risk population of marine mammals using integrated population models

Ecosphere
Effective conservation of threatened populations requires identification of the processes limiting recovery. When multiple population processes are potentially limiting, they are sometimes analyzed independently, often using different datasets ...
Benjamin W. Nelson, Eric J. Ward, Daniel W. Linden, Erin Ashe, Rob Williams   +4 more
doaj   +1 more source

Correction: Mixed-maturation fisheries compromise productivity and resilience of Chinook salmon. [PDF]

Sci Rep
Gayeski N, Swanson D, MacDuffee M, Rosenberger A.   +3 more
europepmc   +1 more source

Rewilding the upper Klamath River Basin: rapid recolonization of Chinook salmon following the world's largest dam removal. [PDF]

Sci Rep
Goodman DH, Denton K, Pess GR, Whelan J, Stefankiv O, Soto T, Corum A, Ortega J, O'Rourke O, Hereford ME, Giudice D, Som NA.   +11 more
europepmc   +1 more source

Diversity Under Pressure: Long-Term Genetic Decline in California's Central Valley Chinook Salmon ESA Listed Runs. [PDF]

Ecol Evol
Collins EE, Thompson TQ, Goertler P, Baerwald MR, Meek MH.   +4 more
europepmc   +1 more source