Article
Veterinary Sciences
Aimee N. N. Reed, Freya E. E. Rowland, Jennifer A. A. Krajcik, Donald E. E. Tillitt
Summary: Steelhead fry reared in Oregon hatcheries have a high mortality rate and show signs of vitamin B1 deficiency. This study explores whether thiamine supplementation can improve their health and survival. The results demonstrate that thiamine-treated fry had significantly higher survival and growth rates compared to those without thiamine supplementation.
VETERINARY SCIENCES
(2023)
Article
Fisheries
Michael J. Malick, Megan E. Moore, Barry A. Berejikian
Summary: Understanding the impact of hatchery-released salmonids on the survival of steelhead smolts is crucial for rebuilding salmonid populations. This study found that high abundances of hatchery Coho Salmon were negatively related to the weekly survival of steelhead, suggesting that predation pressure from shared predators may mediate the mortality of steelhead smolts.
MARINE AND COASTAL FISHERIES
(2022)
Article
Ecology
Teppo Vehanen, Ari Huusko, Eva Bergman, Asa Enefalk, Pauliina Louhi, Tapio Sutela
Summary: Predator-prey interactions play a significant role in influencing the structure of fish communities. Hatchery fish are more vulnerable to predation compared to wild counterparts, especially as their body size increases. Increasing habitat heterogeneity can reduce predation rate in streams with mammalian predators, highlighting the importance of considering habitat diversity in management decisions for supporting wild fish populations.
FRESHWATER BIOLOGY
(2022)
Article
Fisheries
Ian I. Courter, Tom Chance, Ryan Gerstenberger, Mark Roes, Sean Gibbs, Adrian Spidle
Summary: This study assessed the influence of hatchery programs on the reproductive success of salmon and trout, and found that ocean conditions, stream flow, and hatchery fish release numbers had a positive impact on the productivity of natural winter steelhead. The hybridization of hatchery and natural fish did not significantly affect reproductive success.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Ecology
Bruce W. Pfirrmann, Robert P. Dunn, Matthew E. Kimball, Erin M. Levesque
Summary: Structured estuarine habitats play a crucial role in the survival and growth of wild juvenile fishes, but the habitat selection behavior of hatchery-reared fishes upon release is not well understood. In this study, we investigated the habitat associations of hatchery-reared red drum using experimental mesocosms, and found that they prefer oyster shell habitat over salt marsh vegetation. These findings suggest that oyster shells may be preferentially utilized by hatchery-reared red drum during the immediate post-release period.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2023)
Article
Fisheries
Benjamen M. Kennedy, Matt J. Smith, John S. A. Holmes, Roger P. Root, Christian T. Smith, Douglas P. Peterson
Summary: Recent studies have found that steelhead produced from local hatchery origins have lower fitness compared to natural origins. Observing the differences between parr produced by hatchery and natural adults, it was found that the size of parr is similar regardless of parent origin. However, there is a strong positive correlation between the size of parr and water temperature and flow. There is also a possibility of competition between hatchery and natural fish for food and space.
TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY
(2022)
Article
Fisheries
Philip R. Branigan, Kevin A. Meyer, John D. Cassinelli
Summary: Growing larger catchable-sized hatchery trout can increase the chances of anglers catching bigger fish, despite higher costs. Adjusting stocking sizes and numbers can enhance angler satisfaction, but managers need to consider the interaction between stocking size and residence time in different water systems.
Article
Multidisciplinary Sciences
Amir Golpira, Abul B. M. Baki, Haitham Ghamry, Christos Katopodis, Jonah Withers, David Minkoff
Summary: This study investigates the effects of boulder placement on habitat hydraulic complexity in streams, finding that higher boulder concentrations can increase habitat complexity. By adding boulders to a reach, the modified recirculation metric significantly improved. Based on available data, boulder placement can provide suitable habitats for riverine fish species.
SCIENTIFIC REPORTS
(2022)
Article
Fisheries
Joseph S. Zendt, M. Brady Allen, Tobias J. Kock, Russell W. Perry, Adam C. Pope
Summary: This study assessed the impact of segregated salmonid hatchery programs on the interbreeding between hatchery- and natural-origin fish in the Klickitat River. The results showed that natural-origin fish had higher rates of natural spawning in the river compared to hatchery-origin fish, and there was spatiotemporal overlap between the two groups.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2023)
Article
Fisheries
Deirdre Cotter, Louise Vaughan, Nigel Bond, Mary Dillane, Roxanne Duncan, Russell Poole, Gerard Rogan, Niall O. Maoileidigh
Summary: Long-term data analysis of Atlantic salmon populations in Ireland shows that closure of the commercial drift net fishery had a short-term positive impact on return rates to fresh water, but did not lead to a rebound to pre-exploitation levels. The findings highlight the need for strengthening monitoring of fisheries populations in the face of climate change.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Ecology
Ron Pierce, Dave Rosgen, Darcie Geenen, Brandon Rosgen
Summary: This study examines the effectiveness of restoring two streams in central Idaho to benefit livestock ranching and wild trout populations. The restoration includes raising the streambeds, connecting to historical floodplains, and using natural channel design methods. The study shows that the restoration significantly improved groundwater levels, instream flows, spawning substrates, and fish populations.
Article
Multidisciplinary Sciences
M. Lambert, S. Carlisle, I. Cain, A. Douse, L. Watt
Summary: The study in Rum, Scotland revealed a negative correlation between the abundance of rats and mice with the breeding success of Manx shearwaters. While rodenticide treatments reduced rat activity, it led to an increase in mouse activity, ultimately having no impact on the shearwaters' breeding success (p < 0.1). This suggests that both species of rodents contribute to negative impacts on the seabird colony, highlighting the need for further research to assess long-term risks.
SCIENTIFIC REPORTS
(2021)
Article
Marine & Freshwater Biology
P. Caldentey, N. P. Brennan, T. Heimann, J. M. Gardiner
Summary: The study compared prey capture kinematics between hatchery juvenile snook and wild conspecifics, identifying specific differences in behavior. Naive hatchery snook exhibited poorer feeding performance compared to wild fish, but improved quickly with experience. Exposure to live prey could enhance the feeding performance and overall fate of snook released into the wild.
BULLETIN OF MARINE SCIENCE
(2021)
Article
Genetics & Heredity
Eric Nilsson, Ingrid Sadler-Riggleman, Daniel Beck, Michael K. Skinner
Summary: Environmental factors such as nutrition, stress, and toxicants can affect epigenetic programming and phenotypes. The study focused on hatchery spawning and rearing impacts on steelhead trout at a molecular level. Epigenetic differences were found between slow and fast growth hatchery trout, with potential epigenetic transgenerational inheritance observed in sperm.
ENVIRONMENTAL EPIGENETICS
(2021)
Article
Fisheries
Michael Hutchison, Adam Butcher, Andrew Norris
Summary: The study found that pre-release predator recognition and avoidance training can enhance the survival of stocked Murray cod fingerlings, while predator-free release enclosures do not improve their survival. Therefore, it is recommended to release trained cod fingerlings directly into the receiving environment to maximize their chance of survival.
MARINE AND FRESHWATER RESEARCH
(2023)
Article
Multidisciplinary Sciences
Barry A. Berejikian, Donald M. Van Doornik
Article
Fisheries
Christopher P. Tatara, Donald A. Larsen, Matt R. Cooper, Penny Swanson, Mollie A. Middleton, Jon T. Dickey, Deborah Harstad, Michael Humling, Chris R. Pasley, Barry Berejikian
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2019)
Article
Genetics & Heredity
Mackenzie R. Gavery, Krista M. Nichols, Barry A. Berejikian, Christopher P. Tatara, Giles W. Goetz, Jon T. Dickey, Donald M. Van Doornik, Penny Swanson
Article
Fisheries
Barry A. Berejikian, Christopher P. Tatara, Donald M. Van Doornik, Michael A. Humling, Matt R. Cooper, Chris R. Pasley, Jeffrey J. Atkins
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2020)
Article
Fisheries
Christopher P. Tatara, Robert C. Endicott, Jeffrey J. Atkins, Barry A. Berejikian
Summary: The study explores the relationship between feeding rate and relative competitive ability of 1-year-old and 2-year-old steelhead in hatchery tanks, finding that ration directly affects feeding rate and that ration and relative competitive ability interact to influence feeding rate. Older steelhead are more likely to be detected at a single feeding location, while younger fish are more likely to be detected at both locations.
NORTH AMERICAN JOURNAL OF AQUACULTURE
(2021)
Article
Fisheries
Noelle Yochum, Michael Stone, Karsten Breddermann, Barry A. Berejikian, John R. Gauvin, David J. Irvine
Summary: The development of a 360open area excluder has significantly increased salmon escapement rates in pelagic trawl fisheries, although more comprehensive testing is needed. Video footage revealed that salmon mainly escaped during haulback and turns, emphasizing the importance of providing an open path during these periods.
FISHERIES RESEARCH
(2021)
Article
Ecology
Megan E. Moore, Barry A. Berejikian, Correigh M. Greene, Stuart Munsch
Summary: Steelhead Oncorhynchus mykiss smolts face multiple survival threats during their migration from freshwater to the ocean, with predation by harbor seals being a significant factor. Increases in Puget Sound water temperature and the Northeast Pacific marine heat wave led to higher smolt survival probabilities, while ecological changes in the system also influenced smolt survival rates.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Article
Fisheries
Jonathan S. F. Lee, Melissa L. Pierce, Rachel S. Poretsky, Matthew A. Cook, Barry A. Berejikian, Frederick W. Goetz
Summary: Claywater can effectively substitute for algae as a turbidity agent in the feeding of larval sablefish, reducing costs and improving growth. Both gradual and sudden transitions from greenwater to claywater had different impacts on feeding rates and body weights, but resulted in higher body weight and biomass by the end of the larval period. Transitioning at day 8 minimized algae costs, while transitioning at day 18 maximized biomass, offering potential benefits for sablefish aquaculture.
Article
Multidisciplinary Sciences
Thomas A. Jefferson, Mari A. Smultea, Eric J. Ward, Barry Berejikian
Summary: Harbor seal populations in inland waters of Washington, which were previously reduced due to predator control programs, have rebounded since protection measures were put in place in the 1970s. A study using aerial line-transect surveys and tagging data estimated the current abundance of three management stocks, presenting a non-traditional approach that could be applicable to estimating populations of other species with available survey and tagging data.
Article
Fisheries
Jonathan S. F. Lee, Melissa L. Pierce, Matthew A. Cook, Barry A. Berejikian, Frederick W. Goetz, Rachel S. Poretsky
Summary: The larval period in marine fish aquaculture is labor-intensive and high-mortality due to the need for good water quality. Three tank cleaning methods were compared, showing that low cleaning frequencies do not have negative effects on larvae, making it a cost-effective option for reducing labor costs.
Article
Ecology
Megan E. Moore, Barry A. Berejikian
Summary: Coastal infrastructure disruptions can significantly affect the movements and survival of migratory species in marine habitats. A study on steelhead smolts showed that the Hood Canal Bridge had a considerable impact on their survival, influenced by the week of bridge encounter. The behavior of the smolts and their predators at the bridge was also examined, providing valuable information for recovery actions.
Review
Fisheries
Jonathan S. F. Lee, Matthew A. Cook, J. Adam Luckenbach, Barry A. Berejikian, Crystal A. Simchick, Sean M. Oden, Frederick W. Goetz
Article
Fisheries
Jonathan S. F. Lee, Lyle L. Britt, Matthew A. Cook, Thomas H. Wade, Barry A. Berejikian, Frederick W. Goetz
AQUACULTURE RESEARCH
(2017)
Article
Fisheries
Barry A. Berejikian, Jeffrey J. Hard, Christopher P. Tatara, Donald M. Van Doornik, Penny Swanson, Donald A. Larsen
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2017)
Article
Fisheries
Jonathan S. F. Lee, Matthew A. Cook, Barry A. Berejikian, Frederick W. Goetz