Results 1 to 10 of about 17,526 (201)

Thiamine Supplementation Improves Survival and Body Condition of Hatchery-Reared Steelhead (Oncorhynchus mykiss) in Oregon [PDF]

Veterinary Sciences, 2023
Early rearing of steelhead (Oncorhynchus mykiss) in Oregon hatcheries is often problematic; fry can become emaciated and die during the period between hatch and first feed. Thiamine (vitamin B1) deficiency has caused early mortality in salmonids; however,
Aimee N. Reed, Freya E. Rowland, Jennifer A. Krajcik, Donald E. Tillitt   +3 more
doaj   +2 more sources

Genetic parentage reveals the (un)natural history of Central Valley hatchery steelhead [PDF]

Evolutionary Applications
Populations composed of individuals descended from multiple distinct genetic lineages often feature significant differences in phenotypic frequencies. We considered hatchery production of steelhead, the migratory anadromous form of the salmonid species ...
Laura C. Goetz, Hayley Nuetzel, David L. J. Vendrami, Anne K. Beulke, Eric C. Anderson, John Carlos Garza, Devon E. Pearse   +6 more
doaj   +2 more sources

Age at release affects developmental physiology and sex-specific phenotypic diversity of hatchery steelhead trout (Oncorhynchus mykiss). [PDF]

PLoS ONE
Most steelhead trout hatcheries increase growth rate during rearing to produce and release yearling smolts for harvest augmentation, but natural steelhead exhibit variable age of smoltification, so this common rearing practice may not be ideal for ...
Mollie A Middleton, Donald A Larsen, Christopher P Tatara, Barry A Berejikian, Chris R Pasley, Jon T Dickey, Penny Swanson   +6 more
doaj   +2 more sources

Understanding Central Valley Chinook Salmon and Steelhead [PDF]

San Francisco Estuary and Watershed Science, 2005
SAN FRANCISCO ESTUARY & WATERSHED SCIENCE Editorial Understanding Central Valley Chinook Salmon and Steelhead: It is Time to Get off the Dime! Randy Brown, Co-Editor-in-Chief San Francisco Estuary and Watershed Science brown.randall@comcast.net BACKGROUND Chinook salmon and steelhead are important biological components of the Central Valley ecosystem ...
Randall L. Brown
doaj   +3 more sources

A genomic region associated with iteroparous spawning phenology is linked with age‐at‐maturity in female steelhead trout [PDF]

Evolutionary Applications
Age‐at‐maturity and iteroparity are two life history variations of steelhead trout (Oncorhynchus mykiss) that are believed to increase population resilience and stability.
Stuart Willis, Jeff Stephenson, Andrew Pierce, Lea Medeiros, Laura Jenkins, Douglas R. Hatch, Shawn Narum   +6 more
doaj   +2 more sources

Coastal infrastructure alters behavior and increases predation mortality of threatened Puget Sound steelhead smolts

Ecosphere, 2022
Fundamental movements of migratory species can be substantially influenced by marine habitat disruptions caused by coastal infrastructure. The Hood Canal Bridge (HCB) spans the northern outlet of Hood Canal in the Salish Sea, extends 4.6 m (15 ft ...
Megan E. Moore, Barry A. Berejikian
doaj   +1 more source

Evaluating Coexistence of Fish Species with Coastal Cutthroat Trout in Low Order Streams of Western Oregon and Washington, USA

Fishes, 2021
When multiple species of fish coexist there are a host of potential ways through which they may interact, yet there is often a strong focus on studies of single species without considering these interactions.
Kyle D. Martens, Jason Dunham
doaj   +1 more source

Predation probabilities and functional responses: How piscivorous waterbirds respond to pulses in fish abundance

Ecosphere, 2022
How predators respond to changes in prey abundance (i.e., functional responses) is foundational to consumer–resource interactions, predator–prey dynamics, and the stability of predator–prey systems.
Nathan J. Hostetter, Quinn Payton, Daniel D. Roby, Ken Collis, Allen F. Evans   +4 more
doaj   +1 more source

Early marine migration patterns of wild coastal cutthroat trout (Oncorhynchus clarki clarki), steelhead trout (Oncorhynchus mykiss), and their hybrids. [PDF]

PLoS ONE, 2010
Hybridization between coastal cutthroat trout (Oncorhynchus clarki clarki) and steelhead or rainbow trout (Oncorhynchus mykiss) has been documented in several streams along the North American west coast. The two species occupy similar freshwater habitats
Megan E Moore, Fred A Goetz, Donald M Van Doornik, Eugene P Tezak, Thomas P Quinn, Jose J Reyes-Tomassini, Barry A Berejikian   +6 more
doaj   +1 more source

Gut Microbial Composition of Pacific Salmonids Differs across Oregon River Basins and Hatchery Ancestry

Microorganisms, 2022
The gut microbiome may represent a relatively untapped resource in the effort to manage and conserve threatened or endangered fish populations, including wild and hatchery-reared Pacific salmonids.
Nicole S. Kirchoff, Trevan Cornwell, Staci Stein, Shaun Clements, Thomas J. Sharpton   +4 more
doaj   +1 more source