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Statistical stream temperature modelling with SSN and INLA: an introduction for conservation practitioners Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-03-12 Daniel P. Struthers, Lee F.G. Gutowsky, Tim C.D. Lucas, Neil J. Mochnacz, Christopher M. Carli, Mark K. Taylor
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Statistical stream temperature models predicting the fine-scale spatial distribution of water temperatures (i.e., “thermalscape”) can guide aquatic species recovery and habitat restoration efforts. However, stream temperature modelling is complicated by spatial autocorrelation arising from non-independence of sampling sites within
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Stable isotopes delineate regional pelagic food web structure in British Columbia’s coastal ocean Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-03-04 Jacob E. Lerner, Brian P. V. Hunt
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The pelagic food webs of British Columbia’s (BC) coastal oceans have never had a comprehensive review of their trophic structure. In this study, we analyzed carbon (δ13C) and nitrogen (δ15N) stable isotope ratios of pelagic food web components collected from four regions in southern BC: Juan de Fuca Strait, the Strait of Georgia, Queen
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Forestry and stream temperatures: a response to comment by R.D. Moore Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-22 Dylan S. Cunningham, Douglas C. Braun, Jonathan W. Moore, Amanda M. Martens
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Comment: “Forestry influences on salmonid habitat in the North Thompson River watershed, British Columbia” Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-26 R.D. (Dan) Moore
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Correction: Accounting for transient dynamics could improve the use of marine protected areas as a reference point for fisheries management Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-14 V.I. Quennessen, E.A. Babcock, J.W. White
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Apparent migration and natal homing of a small minnow in a large ancient lake Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-13 Takeshi Kikko, Takuya Sato, Minoru Kanaiwa, Daisuke Ishizaki, Kunihiko Kuwamura, Haruo Okamoto, Atsuhiko Ide, Morihito Nemoto, Shoichiro Takeoka, Yoshiaki Kai, Kouji Nakayama, Yasuhiro Fujioka
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Migratory freshwater fish species are particularly susceptible to population decline because they rely on multiple habitats and open passages to complete their life cycle. Understanding the migratory patterns of cyprinids is thus essential for their management and conservation. Gnathopogon caerelescens, a small cyprinid species endemic
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A Bayesian spatially explicit estimation of daily egg production: application to anchovy in the Bay of Biscay Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-02 Leire Citores, Leire Ibaibarriaga, Maria Santos, Andres Uriarte
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Biomass estimates of fish resources by the daily egg production method (DEPM) are sensitive to the high variability of the daily egg production (P0) and egg mortality (Z) in space. This work presents a Bayesian approach to estimate these parameters. A prior distribution of Z based on literature serves to overcome the biologically implausible
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Seventy years of diminishing biocomplexity of California Central Valley hatchery steelhead, Oncorhynchus mykiss Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-02-02 Eric R. Huber, Rachael E. Ryan, Rachel C. Johnson, Anna M. Sturrock, Robert A. Lusardi, Stephanie M. Carlson
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The California Central Valley steelhead (Oncorhynchus mykiss) has declined precipitously since Euro-American colonization and has been listed as threatened under the United States Endangered Species Act since 1998. Hatchery-origin fish now dominate the population, and hatchery management is a key listing factor. However, scant release
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Efficacy of a novel reproductive tag to index spawn timing Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-01-22 Spencer T. Gardner, Tomas O. Höök
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Insight into fish annual reproductive dynamics (including spawn timing) can elucidate key determinants of recruitment. However, few methods, if any, are available to directly index individual spawn timing, hindering study of such processes. To this end, we developed two reproductive tags (RTs; internal and external) and evaluated their
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Biologgers reveal unanticipated issues with descending angled walleye with barotrauma symptoms Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-01-10 Jamie C. Madden, Luc LaRochelle, Declan Burton, Sascha C. Danylchuk, Andy J. Danylchuk, Steven J. Cooke
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Without sufficient time to diffuse air from their swim bladders, physoclistous fish caught in deep water can exhibit symptoms of barotrauma. In this study, we tested the effectiveness of four barotrauma relief techniques on 76 walleye (Sander vitreus) and compared their 10 min post-release behaviour and depth selection with an untreated
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Freshwater fish otoliths record signals from both water and physiological processes: new insights from Sr/Ca and Ba/Ca ratios Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-01-09 G. Bareille, M. Vignon, A. Chappaz, A. Fontaine, H. Tabouret, F. Morat, J. Martin, J.C. Aymes, F. Daverat, C. Pécheyran, O. Donard
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Using strontium (Sr) and barium (Ba) in otoliths to determine natal origins and understand patterns of fish movements is based on the fundamental assumption that otoliths record water chemistry signals without any major alterations. Although prior studies highlighted that fish physiology can modify the water signal in otoliths, studies
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Note of appreciation Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-01-01
Canadian Journal of Fisheries and Aquatic Sciences, Volume 81, Issue 1, Page i-i, January 2024.
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Incorporating life history diversity in an integrated population model to inform viability analysis Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2024-01-02 Mark H. Sorel, Jeffrey C. Jorgensen, Richard W. Zabel, Mark D. Scheuerell, Andrew R. Murdoch, Cory M. Kamphaus, Sarah J. Converse
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Life history diversity can significantly affect population dynamics and effects of management actions. For instance, variation in individual responses to environmental variability can reduce extirpation risk to populations, as the portfolio effect dampens temporal variability in abundance. Moreover, differences in habitat use may cause
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Evaluation of survival estimates generated from tracking downstream migrating juvenile sea lamprey (Petromyzon marinus) with a miniature acoustic telemetry tag Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-22 Taylor F. Haas, Travis O. Brenden, Zhiqun D. Deng, C. Michael Wagner
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Fish that undertake juvenile migration pass through habitats that vary in mortality risk. The ability to identify regions of persistently low survival would improve fishery management. We conducted a field study combined with predictive modeling of survival in downstream migrating juvenile sea lamprey using a new micro-acoustic telemetry
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Determining early marine survival and predation by endothermic predators on acoustically tagged Atlantic salmon (Salmo salar) post-smolts Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-22 Greg English, Brent M. Wilson, Michael J. Lawrence, Matt Black, James P. Hawkes, David C. Hardie, Jason M. Daniels, Jonathan W. Carr, Claire Rycroft, Glenn T. Crossin, Fred G. Whoriskey, Cornelia E. den Heyer, Xavier Bordeleau, Christopher W. McKindsey, Marc Trudel
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Many Atlantic salmon (Salmo salar) populations have experienced significant declines for decades throughout North America and Europe. Mortality due to marine mammal predation during their early marine life could be an important factor contributing to these declines and limiting their population recoveries. However, quantifying predation
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Correction: Predicting favourable streams for anadromous salmon spawning and natal rearing under climate change Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-08 Josephine C. Iacarella, J. Daniel Weller
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Electronic tagging and tracking aquatic animals to understand a world increasingly shaped by a changing climate and extreme weather events Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-06 Robert J. Lennox, Pedro Afonso, Kim Birnie-Gauvin, Lotte S. Dahlmo, Cecilie I. Nilsen, Robert Arlinghaus, Steven J. Cooke, Allan T. Souza, Ivan Jarić, Marie Prchalová, Milan Říha, Samuel Westrelin, William Twardek, Eneko Aspillaga, Sebastian Kraft, Marek Šmejkal, Henrik Baktoft, Tomas Brodin, Gustav Hellström, David Villegas-Ríos, Knut Wiik Vollset, Timo Adam, Lene K. Sortland, Michael G. Bertram,
Canadian Journal of Fisheries and Aquatic Sciences, Volume 81, Issue 3, Page 326-339, March 2024. Despite great promise for understanding the impacts and extent of climate change and extreme weather events on aquatic animals, their species, and ecological communities, it is surprising that electronic tagging and tracking tools, like biotelemetry and biologging, have not been extensively used to understand
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Life-cycle modeling reveals high recovery potential of at-risk wild Chinook salmon via improved migrant survival Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-05 Gregory R. Jacobs, Russell F. Thurow, Charles E. Petrosky, Craig W. Osenberg, Seth J. Wenger
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Chinook salmon (Oncorhynchus tshawytscha) in the Columbia River basin are threatened by anthropogenic changes to migratory corridors, estuaries, and natal habitats. Streams provide spatially heterogeneous natal habitats essential for salmon spawning and rearing life stages. We fit a statistical state-space model to salmon populations
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Lake characteristics drive concordant trophic responses across ecosystems in three top predator fish species Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-04 Mary A. Thelen, David J. Gallagher, Payton E. Johnson, Sara M. Kangas, Dylan J. McNulty, Alexandra L. Morrison, Brian R. Herwig, David F. Staples, Kyle D. Zimmer
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Understanding similarities in trophic ecology of top predators is crucial given their influences on food webs. We sampled walleye (Sander vitreus), northern pike (Esox lucius), and muskellunge (Esox masquinongy) from 17 Minnesota (USA) lakes and used δ13C and δ15N to estimate littoral carbon use, trophic position, and isotopic niche
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Time to treat the climate and nature crisis as one indivisible global health emergency Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-01
Canadian Journal of Fisheries and Aquatic Sciences, Volume 80, Issue 12, Page i-iii, December 2023.
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Cross-scale environmental impacts across persistent and dynamic aggregations within a complex population: implications for fisheries management Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-12-01 Georgios Kerametsidis, James Thorson, Vincent Rossi, Diego Álvarez-Berastegui, Cheryl Barnes, Gregoire Certain, Antonio Esteban, Encarnación García, Angélique Jadaud, Safo Piñeiro, Miguel Vivas, Manuel Hidalgo
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Accounting for marine stocks spatiotemporal complexity has become one of the most pressing improvements that should be added to the new generation of stock assessment. Disentangling persistent and dynamic population subcomponents and understanding their main drivers of variation are still stock-specific challenges. Here, we hypothesized
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The estuarine growth and residency of juvenile Pacific salmon in North America: a compilation of empirical data Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-30 Michael Arbeider, Violaine Pemberton-Renaud, Emma E. Hodgson, Jonathan W. Moore
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The value of estuaries as nursery habitat for juvenile anadromous salmon is likely variable across estuaries and species. Here, we compiled published empirical data on juvenile salmon estuarine growth and residency. We aimed to quantify the range and variability of these aspects for five species of Pacific salmon across estuaries,
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Applying the ideal free distribution to the movement of a highly mobile gillnet fishery for Pacific salmon Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-28 Katherine N. McElroy, Caitlin A. Stern, Thomas P. Quinn, Ray Hilborn
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Ecological models are used to understand where fishing vessels operate, improving fisheries management success. The ideal free distribution (IFD) predicts equalization of catch across locations in response to distributions of fish and competing vessels. We applied the IFD as a null model to investigate the movement and catch per vessel
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Evaluating robustness of harvest control rules to climate-driven variability in Pacific sardine recruitment Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-16 Robert P. Wildermuth, Desiree Tommasi, Peter Kuriyama, James Smith, Isaac Kaplan
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Climate-driven changes in ocean temperatures, currents, or plankton dynamics may disrupt pelagic forage fish recruitment. Being responsive to such impacts enables fisheries management to ensure continued sustainable harvest of forage species. We conducted a management strategy evaluation to assess the robustness of current and alternative
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Dams facilitate predation during Atlantic salmon (Salmo salar) smolt migration Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-14 Matthew A. Mensinger, James P. Hawkes, Graham S. Goulette, Alessio Mortelliti, Erik J. Blomberg, Joseph D. Zydlewski
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Diadromous fish populations have incurred precipitous declines across the globe. Among many stressors, these species are threatened by anthropogenic barriers that impede movement, alter riverine habitat, and augment predator communities. In this study, we used acoustic transmitters (n = 220) with predation and temperature sensors to
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Spatial and temporal patterns in the threats to at-risk freshwater fish species in Canada Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-14 Veronica M.L. McKelvey, Nicholas E. Mandrak
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. This study identifies the current spatial and temporal patterns of threats to at-risk freshwater fishes within Canada. Data for 65 at-risk freshwater fishes were collated from the Committee on the Status of Endangered Wildlife in Canada Assessment and Status reports with threat calculators. Using these data, the overall threat impact
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Species–environment relationships, clusters, and thermal ranges of fish species inhabiting boreal rivers Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-14 Tapio Sutela, Teppo Vehanen, Pekka Jounela, Jukka Aroviita, Topi K. Lehtonen
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Understanding how key environmental factors affect fish communities is necessary for sound environmental management. Accordingly, we studied fish species–environment relationships in Finnish boreal rivers. A self-organizing map (SOM) analysis showed strong relationships between the occurrence of 18 fish species and 10 environmental
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Evaluation of alternative harvest policies for striped bass and their prey, Atlantic menhaden Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-10 Samantha Schiano, Geneviève M. Nesslage, Katie Drew, Amy M. Schueller, Ryan J. Woodland, Michael J. Wilberg
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Ecosystem approaches to fisheries management are being explored worldwide, but few evaluations of multispecies harvest control rules (HCRs) exist. Our goal was to perform a simulation test of a suite of HCRs using an age-structured predator–prey model to represent the dynamics of a small pelagic fish, Atlantic menhaden (Brevoortia
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Integrating disparate survey data in species distribution models demonstrate the need for robust model evaluation Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-08 Jessica Nephin, Patrick L. Thompson, Sean C. Anderson, Ashley E. Park, Christopher N. Rooper, Brendan Aulthouse, Joe Watson
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Marine spatial planning and conservation initiatives benefit from an understanding of species distributions across larger geographic areas than are often sampled by any one survey. Here, we test whether the integration of disparate survey data can improve habitat predictions across a region not well sampled by a single survey using
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Effects of simulated catch-and-release angling of Atlantic salmon shortly before spawning on the viability and development of their offspring Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-03 Magdalene Papatheodoulou, Neil B. Metcalfe, Shaun S. Killen
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The principle of catch-and-release (C&R) angling is to conserve fish populations while allowing the socioeconomic benefits associated with recreational angling to continue, even at low-stock abundances. We explored how angling-associated parental stress close to spawning could influence early development of the next generation. Wild
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Environmental determinants of round goby invasion refuges at a river scale: implications for conservation of native biodiversity Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-11-02 Olivier Morissette, Cristina Charette, Matthew J.S. Windle, Abraham Francis, Annick Drouin, Jesica Goldsmit, Alison M. Derry
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Introductions of exotic invasive species are a global disturbance for natural habitats. The severity of invasions can greatly vary from local to global scales, as observed in invasion refuges, which exhibit lower-than-expected invasion intensity. In this study, we analyzed the effects of water conductivity and wetland presence on the
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Contrasting strengths of eDNA and electrofishing compared to historic records for assessing fish community diversity and composition Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-30 Jeanine Brantschen, Florian Altermatt
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. In times of rapid environmental changes, baseline biodiversity data are crucial for management. In freshwaters, fish inventories are commonly based on the capture and morphological identification of specimens. The sampling of environmental DNA (eDNA) provides an alternative to assess diversity across large catchments. Here, we used
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Assessing the trophic ecology of Southern Ocean Myctophidae: the added value of DNA metabarcoding Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-23 Michaelis Vasiliadis, Jennifer J. Freer, Martin A. Collins, Alison C. Cleary
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Lanternfishes (Myctophidae) are key components of mesopelagic fish communities globally. In the Southern Ocean, incomplete information on myctophid diets limits our understanding of their energetics, interactions, and wider ecosystem impact. Traditional microscopic methods of diet analysis have relatively coarse prey resolution and
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Correction: agricultural land use and morphometry explain substantial variation in nutrient and ion concentrations in lakes across Canada Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-23 Joe R. Sánchez Schacht, Paul W. MacKeigan, Zofia E. Taranu, Yannick Huot, Irene Gregory-Eaves
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Spatially varying effects of the California Undercurrent on Pacific hake distribution Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-18 Michael J. Malick, Mary E. Hunsicker, Melissa A. Haltuch, Sandra L. Parker-Stetter, Kristin N. Marshall, John E. Pohl, Aaron M. Berger, Samantha A. Siedlecki, Stéphane Gauthier, Albert J. Hermann
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. In the California Current Ecosystem, the California Undercurrent (CU) is the predominate subsurface current that transports nutrient-rich water from southern California poleward. In this study, we used a large dataset of spatially explicit in situ observations of Pacific hake (Merluccius productus) and the CU (36.5–48.3°N) to estimate
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Effects of behavioral strategies on catchability, bait selectivity, and hunting behavior in northern pike (Esox lucius) Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-17 Jorrit Lucas, Albert Ros, Juergen Geist, Alexander Brinker
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. This study investigated how northern pike with two behavioral strategies in the context of predation interact with natural and artificial baits in simulated angling experiments. Predator types were assessed in three behavioral trials over 15 days by measuring foraging latency under altered conditions (abruptly increased light intensity)
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Lake water chemistry and its relationship to shoreline residential development and natural landscape features in Algonquin Provincial Park, Ontario, Canada Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-17 Anna M. DeSellas, Andrew M. Paterson, Kathleen M. Rühland, John P. Smol
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. There is a scarcity of long-term chemical monitoring data for lakes in Algonquin Provincial Park (APP), with minimal understanding of the impacts of cottage-leases (e.g., cottage lots, campgrounds, and commercial leases) on lake water chemistry. We examine spatial patterns in water chemistry and landscape features of 32 reference and
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Trophic ecology of juvenile lean and siscowet lake charr (Salvelinus namaycush) in Lake Superior: assessing for potential competition Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-16 Brandon S. Gerig, Shawn P. Sitar, Will F. Otte, Daniel L. Yule, Heidi K. Swanson, Charles R. Bronte, Dray Carl, Joshua Blankenheim
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. We investigated the spatial overlap, diet, isotopic niche, and growth of juvenile lean and siscowet lake charr (Salvelinus namaycush) in Lake Superior to address concerns of potential competition with implications to the study of resource polymorphism. Catch data revealed the greatest levels of sympatry in waters from 40 to 60 m. Juvenile
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Catch as catch can: markets, availability, and fishery closures drive distinct responses among the U.S. West Coast coastal pelagic species fleet segments Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-13 Felipe J. Quezada, Desiree Tommasi, Timothy H. Frawley, Barbara Muhling, Isaac Kaplan, Stephen Stohs
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Fishers often target multiple species. More diverse harvest portfolios may reduce income risk, increasing resilience to climate-driven changes in target species’ spatial distributions and availability. Moreover, different effects can be observed across vessels in response to the same shocks and stressors, as fishers are heterogeneous
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Multiple environmental drivers across life stages influence Yukon River Chinook salmon productivity Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-10 A. Murdoch, B.M. Connors, N.W.R. Lapointe, J. Mills Flemming, S.J. Cooke, C. Mantyka-Pringle
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Recent declines of Yukon River Chinook salmon (Oncorhynchus tshawytscha) populations have severely impacted people residing in the Yukon and Alaska. Evidence-based conservation strategies focused on stock recovery and adaptation are urgently needed but are limited by our understanding of what is driving declines, particularly in Canadian
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Ecosystem heating experiment reveals sex-specific growth responses in fish Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-06 Renee M. van Dorst, Anna Gårdmark, Kimmo K. Kahilainen, Leena Nurminen, Satu Estlander, Hannu Huuskonen, Mikko Olin, Martti Rask, Magnus Huss
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Size-specific body growth responses to warming are common among animal taxa, but sex-specific responses are poorly known. Here we ask if body growth responses to warming are sex-dependent, and if such sex-specific responses vary with size and age. This was tested with sex-specific data of back-calculated individual growth trajectories
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Explicitly incorporating ecosystem-based fisheries management into management strategy evaluation, with a focus on small pelagics Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-05 Carryn L. de Moor
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The need to transition from traditional single-species fisheries management approaches towards ecosystem-based fisheries management (EBFM), or an ecosystem approach to fisheries, is widely recognised. EBFM is particularly important when considering management actions for economically valuable fisheries for small pelagic forage fish
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Assessing small pelagic fish trends in space and time using piscivore stomach contents Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-04 Sarah K. Gaichas, James Gartland, Brian E. Smith, Anthony D. Wood, Elizabeth L. Ng, Michael Celestino, Katie Drew, Abigail S. Tyrell, James T. Thorson
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Changing distribution and abundance of small pelagic fishes may drive changes in predator distributions, affecting predator availability to fisheries and surveys. However, small pelagics are difficult to survey directly, so we developed a novel method of assessing the aggregate abundance of 21 small pelagic forage taxa via predator
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Hierarchical model to predict common carp and bigmouth buffalo abundance from electrofishing data Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-10-04 Martin A. Simonson, Michael J. Weber, Audrey L. McCombs, Andrew R. Annear
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Catch per unit effort (CPUE) is used as an index of fish abundance under the premise that changes in CPUE result from changes in true density. However, catchability may also vary based on environmental conditions that affect observed CPUE. We developed a hierarchical model for estimating common carp (Cyprinus carpio) and bigmouth buffalo
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Reductions in sampling effort for fishery-independent age and length composition: balancing sampling efficiency, data uncertainty, and workforce health Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-26 Peter-John F. Hulson, Benjamin C. Williams, Meaghan D. Bryan, Jason Conner, Matthew R. Siskey
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Unavoidable survey effort reduction has become a reality that must be accounted for in fisheries stock assessment. In addition, negative consequences to survey staff health due to repetitive motion injuries are becoming increasingly costly for managing agencies. In this study, we evaluated the outcomes of reductions in age and length
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Decreased calcification to photosynthesis ratio in coccolithophores under reduced O2 and elevated CO2 environment Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-20 Shanying Tong, Dong Xu, Hongjin Qiao, Naihao Ye
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. We examined the physiological performance in the most cosmopolitan coccolithophorid, Emiliania huxleyi and Gephyrocapsa oceanica, which were treated with 8.3 (ambient O2 (AO)), 4.6 (medium O2 (MO)), and 2.5 (low O2 (LO)) mg L–1 O2 under 400 ppm (ambient CO2 (AC)) and 1000 (high CO2 (HC)) ppm CO2 conditions. Elevated CO2 decreased the
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Linking real world fisheries datasets for mapping of revenue from fishing grounds to dependent communities Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-14 Shay O'Farrell, Larry Perruso, James N. Sanchirico, Iliana Chollett
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Mapping the economic value of the ocean is pivotal to understand how marine ecosystems contribute to human well-being and to support fisheries management. We present a framework to analyse fisheries data and map fishing revenues by linking Vessel Monitoring System (VMS) information to logbooks and observer data. We provide a detailed
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Effect of government removal of salmon farms on sea lice infection of juvenile wild salmon in the Discovery Islands Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-12 Richard Routledge, Alexandra Morton
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. In response to a federal government order, the number of salmon farms operating in the Discovery Islands region declined from eight in 2020, to one in 2022. Over this period, 1627 juvenile pink (Oncorhynchus gorbuscha) and chum (Oncorhynchus keta) salmon captured at sites throughout the study area were examined for sea lice. The average
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Comparison of known spawner abundance from fence counts to visual counts for simplified spawner estimation methods Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-11 Paul J. Askey, Hillary G.M. Ward, Tyler Weir, Kristen King
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Many salmon species are monitored by visual counts of spawners in streams; however, there are few data sets where abundance is known and compared to estimates derived from visual counts. We used spawner fences to obtain known kokanee (Oncorhynchus nerka) spawner abundance (14 stream-years) on streams that are monitored with annual
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Factors affecting powerhouse passage of spring migrant smolts at federally operated hydroelectric dams of the Snake and Columbia rivers Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-11 Ryan A. Harnish, Kenneth D. Ham, John R. Skalski, Richard L. Townsend, Rebecca A. Buchanan
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. From 2008 to 2018, acoustic telemetry studies were conducted to evaluate dam passage survival of spring migrant Chinook salmon and steelhead smolts at seven of the eight federally operated dams on the lower Snake and Columbia rivers. Data from over 87 000 dam passage events were evaluated using regression modeling to identify the effect
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Reply to “Comment: Surprising salmonid response to water diversion at four run-of-river hydroelectric projects in British Columbia” Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-06 M.D. Hocking, S.G. Faulkner, E. Vogt, K. Akaoka, A. Harwood, T. Hatfield, F.J.A. Lewis
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
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Identifying early life stages of Great Lakes fishes using a metabarcoding approach Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-06 Kavishka S. Gallage, Alexander Van Nynatten, Nathan K. Lujan, Nathan R. Lovejoy, Nicholas E. Mandrak
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Detection of early life stages of fishes is important for understanding life history patterns and critical spawning habitats. When feasible, identifying early life stages of fishes using morphology requires taxonomic expertise and can be challenging, time consuming, and imprecise. In this study, we used DNA metabarcoding to identify
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Comment: Surprising salmonid response to water diversion at four run-of-river hydroelectric projects in British Columbia Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-06 Richard J. McCleary, Ronald A. Ptolemy
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Although the authors have completed an ambitious long-term field experiment involving the effects of water diversion on fish and invertebrates inhabiting steep mountain stream ecosystems, certain aspects of their study design and their interpretations create doubt and skepticism. Additional information is required on how the authors
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Effects of incubation temperature and maternal phenotype on Baltic herring (Clupea harengus membras) eggs and larvae: an experimental study Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-09-01 K. Mäkinen, M. Rajasilta, S. Ruuskanen, T. Karpela, A. Lauerma, J. Sahlstén
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Temperature modifies the reproductive success of fish, yet, in many species, we lack the information on its role in the early development. In this study, the effect of temperature on the relation between maternal traits (length, age, somatic condition, and muscle lipid and ovarian thyroid hormone concentrations), egg quality (fertilization
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Artificial water-level fluctuation modulates trophic niches of benthic fish assemblages in one of the world's largest reservoirs Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-31 Chuansong Liao, Jiacheng Wang, Sandra Bibiana Correa, Jixin Yu, Rui Yang, Jing Yuan, Wei Li, Shaowen Ye, Chuanbo Guo, Jiashou Liu
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. The impoundment of the Yangtze River and construction of the Three Gorges Dam and Reservoir created an unnatural flow regime with a 30 m water-level fluctuation and four artificial seasons that differ from the river's natural flow-regime timing. Using stable isotopes, we selected 15 common benthic fish species representing five trophic
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Species-specific adaptations, individual condition, and life-history-induced dispersal strategies of fish larvae along a transverse gradient in a large river Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-28 Zhen Wang, Hubert Keckeis, Fei Cheng, Songguang Xie
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Early life-history properties reveal a considerable variation among riverine fish species and may play a major role in the downstream drift of larval fish. This role, however, remains largely unexplored. Assemblages of drifting fish larvae and their condition during the peak seasons were analyzed along a cross-section from littoral
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Predicting favourable streams for anadromous salmon spawning and natal rearing under climate change Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-17 Josephine C. Iacarella, J. Daniel Weller
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Successful management of imperilled anadromous salmon stocks requires understanding how salmon will respond to a changing climate across their extensive ranges. Though largely unused for anadromous salmon to date, environmental niche models (ENMs) can provide a strong foundation for estimating where and how much habitat will likely
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A needle in a haystack: strontium isotopes (87Sr/86Sr) in otoliths identify origin of largemouth bass from a large Southwest reservoir Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-03 Alexander Vaisvil, Malte Willmes, Edward J. Enriquez, Zachary B. Klein, Colleen A. Caldwell
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Largemouth bass Micropterus salmoides, a popular warm water sport fish, is routinely stocked in reservoirs throughout the USA to augment wild populations. Evaluating if these supplementations are successful requires distinguishing hatchery-sourced fish from their wild counterparts. From 2011 to 2019, over 467 000 largemouth bass fingerlings
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Year-round monitoring of Arctic species of sculpin to identify residency and seasonality of movement behavior Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-03 Nathan T. Hermann, Lars J. Hammer, Nigel E. Hussey, Marianne Marcoux, Kevin J. Hedges, Ryan P. Walter, Nathan B. Furey
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. Environments change across space and time, often requiring organisms to exhibit behavioral responses. In the Arctic, migratory consumers are motivated by spring resources to follow receding ice; however, resident species’ responses to this ephemeral productivity are less well understood. We characterized the movement behaviors of relatively
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Characteristics of a sea louse (Caligus clemensi) epizootic in wild Pacific herring (Clupea pallasii) Can. J. Fish. Aquat. Sci. (IF 2.4) Pub Date : 2023-08-03 David J. Páez, Jacob L. Gregg, Ashley H. MacKenzie, Sophie A. Hall, Paul K. Hershberger
Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print. We characterized a natural sea louse epizootic of Caligus clemensi and the effects of parasitism on Pacific herring Clupea pallasii in Port Angeles Harbor, WA, USA. Infestation prevalence on newly metamorphosed age 0 Pacific herring reached 100% prevalence by mid-August. At this time, the mean louse intensity was 4.6 lice/fish, and