Results 61 to 70 of about 29,195 (221)

Visual Modelling to Predict Behavioural Responses of Catsharks, Skates, and Plaice to Artificial Light for Use in Bycatch Reduction

Fisheries Management and Ecology, EarlyView.
ABSTRACT Light can be used to deter bycatch from fishing nets, but few studies have aimed to quantify how species view and respond to light. Here, we used visual models to predict how target (plaice Pleuronectes platessa) and bycatch (small‐spotted catshark Scyliorhinus canicular and undersized skates, Raja spp) species, captured in mixed demersal ...
Jasmine Somerville, Jon Blount, Martin Stevens   +2 more
wiley   +1 more source

Transcriptional Response to Acute Thermal Exposure in Juvenile Chinook Salmon Determined by RNAseq. [PDF]

, 2015
Thermal exposure is a serious and growing challenge facing fish species worldwide. Chinook salmon (Oncorhynchus tshawytscha) living in the southern portion of their native range are particularly likely to encounter warmer water due to a confluence of ...
Baerwald, Melinda R, Fangue, Nann A, May, Bernie P, Meek, Mariah H, Rincón, Gonzalo, Stephens, Molly R, Tomalty, Katharine MH   +6 more
core  

Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem. [PDF]

, 2019
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need to account for geographical patterns in traits sensitive to climate change, as well as climate threats to species-level ...
Beechie, Tim, Bograd, Steven J, Boughton, David A, Carr, Mark, Cooney, Thomas D, Crozier, Lisa G, Dunham, Jason B, Greene, Correigh M, Haltuch, Melissa A, Hazen, Elliott L, Holzer, Damon M, Huff, David D, Johnson, Rachel C, Jordan, Chris E, Kaplan, Isaac C, Lindley, Steven T, Mantua, Nathan J, McClure, Michelle M, Moyle, Peter B, Myers, James M, Nelson, Mark W, Spence, Brian C, Weitkamp, Laurie A, Williams, Thomas H, Willis-Norton, Ellen   +24 more
core   +1 more source

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens, Andy Kingham, Jason E. Jannot   +2 more
wiley   +1 more source

Isolation and characterization of the fall Chinook aquareovirus

Virology Journal, 2017
Background Salmon are paramount to the economy, ecology, and history of the Pacific Northwest. Viruses constitute one of the major threats to salmon health and well-being, with more than twenty known virus species that infect salmon.
Negar Makhsous, Nicole L. Jensen, Katherine H. Haman, William N. Batts, Keith R. Jerome, James R. Winton, Alexander L. Greninger   +6 more
doaj   +1 more source

Passage Route Survival and Behavior of Juvenile Salmon at Priest Rapids Dam, Columbia River, WA [PDF]

, 2015
Columbia River hydropower is an economic mainstay of the Pacific Northwest. However, it is well known that the construction of hydropower dams has added anthropogenic pressure to Columbia River salmon populations.
Hatch, Kyle B.
core   +1 more source

Frequency responses of age-structured populations: Pacific salmon as an example

, 2010
Increasing evidence of the effects of changing climate on physical ocean conditions and long-term changes in fish populations adds to the need to understand the effects of stochastic forcing on marine populations.
Alan Hastings, Anderson, Barrowman, Bjørnstad, Bjørnstad, Botsford, Botsford, Botsford, Botsford, Bradford, Caswell, Coronado, Day, Doornik, Elaydi, Greenman, Greenman, Healey, Hill, Hirsch, Hsieh, Jones, Lee Worden, Logerwell, Louis W. Botsford, Matthew D. Holland, McCann, Moloney, Myers, Nisbet, Perry, Pyper, Ricker, Sandercock, Sissenwine, Sykes, Teo, Timmermann, Vollestad, Young   +39 more
core   +1 more source

Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye (Sander vitreus)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye (Sander vitreus) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to
Justin M. Sturtz, Benjamin J. Schall, Matthew J. Ward, Cody E. Treft, Steven R. Chipps, Christopher A. Cheek   +5 more
wiley   +1 more source

Effects of Ichythyophonus on Chinook Salmon Reproductive Success in the Yukon River Draining [PDF]

, 2012
Ichthyophonus hoferi is a parasitic protozoan affecting marine and anadromous fishes, including salmonids (Kocan et al. 2004). Gross clinical signs associated with Ichthyophonus infection are multifocal white lesions on the heart, liver, spleen, and ...
Floyd, Theresa
core  

Impact of Environmental Conditions on the Spawning Migration of Sea Trout (Salmo trutta L.) in Two Large, Sub‐Arctic River Systems

Fisheries Management and Ecology, EarlyView.
ABSTRACT The global decline in salmonid stocks has increased the need for knowledge of local adaptations and life history strategies of salmonids. In this study, we used radio‐telemetry tracking data from sea trout populations in two large high‐latitude rivers to model upstream spawning migration speed of trout in response to prevailing environmental ...
L. Lähteenmäki, A. Romakkaniemi, R. Huusko, G. Hellström, P. Orell, J. Erkinaro, A. H. Rikardsen, J. Jensen, M. Snickars   +8 more
wiley   +1 more source