Results 1 to 10 of about 3,147 (154)

Hatcheries to High Seas: Climate Change Connections to Salmon Marine Survival [PDF]

Ecology and Evolution, 2023
We investigated variations in the marine survival of Japanese hatchery chum salmon (Oncorhynchus keta) during 25 years of climate change (1998–2023).
Shuichi Kitada, Katherine W. Myers, Hirohisa Kishino   +2 more
doaj   +4 more sources

Reproductive success in wild and hatchery male coho salmon [PDF]

Royal Society Open Science, 2015
Salmon produced by hatcheries have lower fitness in the wild than naturally produced salmon, but the factors underlying this difference remain an active area of research.
Shawn Garner, Bryan Neff, Ian A Fleming   +2 more
exaly   +5 more sources

Salmon hatchery strays can demographically boost wild populations at the cost of diversity: quantitative genetic modelling of Alaska pink salmon [PDF]

Royal Society Open Science
Hatcheries are vital to many salmon fisheries, with inherent risks and rewards. While hatcheries can increase the returns of adult fish, the demographic and evolutionary consequences for natural populations interacting with hatchery fish on spawning ...
Kristen Gruenthal, Samuel May
exaly   +4 more sources

Social influences complement environmental cues to stimulate migrating juvenile salmon [PDF]

Movement Ecology
Background The large-scale seasonal migrations undertaken by many species require complex navigational and timing decisions. Animals migrating in groups might benefit from collective decision making, especially if the environment has large local ...
Maria Kuruvilla, Thomas P. Quinn, Joseph H. Anderson, Mark D. Scheuerell, Erika M. Miller, Andrew G. Berger, Connie Okasaki, John R. McMillan, George R. Pess, Peter A. H. Westley, Andrew M. Berdahl   +10 more
doaj   +2 more sources

Reduced relative fitness in hatchery‐origin Pink Salmon in two streams in Prince William Sound, Alaska

Evolutionary Applications, 2022
Previous studies generally report that hatchery‐origin Pacific Salmon (Oncorhynchus spp.) have lower relative reproductive success (RRS) than their natural‐origin counterparts. We estimated the RRS of Pink Salmon (O.
Kyle Shedd, Daniel James Prince, Emily Lescak   +2 more
exaly   +2 more sources

Parallel epigenetic modifications induced by hatchery rearing in a Pacific salmon [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2017
Significance Captive rearing is known to impact the fitness of individuals released in the wild, but the relative role of genetic vs. nongenetic underlying processes is still debated. We measured genome-wide methylation profiles to document epigenetic differences between Pacific salmon originating from a hatchery and their natural ...
Jeremy Le Luyer, Martin Laporte, Louis Bernatchez   +2 more
exaly   +4 more sources

Hatchery Salmon and Ecological Overshoot

Aquaculture, Fish and Fisheries
Is there an ecological niche for ‘ocean ranched’ hatchery salmon, Oncorhynchus spp., to supplement wild salmon? Ecologically, I hypothesize that the carrying capacity for biota is: (1) limited; (2) filled with locally adapted biota competing and ...
Benjamin William Van Alen
doaj   +2 more sources

Managed metapopulations: do salmon hatchery 'sources' lead to in-river 'sinks' in conservation? [PDF]

PLoS ONE, 2012
Maintaining viable populations of salmon in the wild is a primary goal for many conservation and recovery programs. The frequency and extent of connectivity among natal sources defines the demographic and genetic boundaries of a population. Yet, the role
Rachel C Johnson, Peter K Weber, John D Wikert, Michelle L Workman, R Bruce MacFarlane, Marty J Grove, Axel K Schmitt   +6 more
doaj   +2 more sources

Straying of hatchery salmon in Prince William Sound, Alaska [PDF]

Environmental Biology of Fishes, 2012
The straying of hatchery salmon may harm wild salmon populations through a variety of ecological and genetic mechanisms. Surveys of pink (Oncorhynchus gorbuscha), chum (O. keta) and sockeye (O. nerka) salmon in wild salmon spawning locations in Prince William Sound (PWS), Alaska since 1997 show a wide range of hatchery straying.
Richard E Brenner
exaly   +2 more sources

Wild chinook salmon survive better than hatchery salmon in a period of poor production [PDF]

Environmental Biology of Fishes, 2011
The population dynamics of chinook salmon (Oncorhynchus tshawytscha) from the Cowichan River on Vancouver Island, British Columbia, Canada are used by the Pacific Salmon Commission as an index of the general state of chinook salmon coast wide. In recent years the production declined to very low levels despite the use of a hatchery that was intended to ...
R J Beamish
exaly   +2 more sources