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Jeanson AL, Madden JC, Ekström A, Danylchuk AJ, Young N, Howarth A, Twardek WM, Twibell RG, Root RP, Hanson KC, Cooke SJ. Bioenergetic consequences of repeated catch-and-release fisheries interactions on adult steelhead across a range of ecologically relevant water temperatures. Comp Biochem Physiol A Mol Integr Physiol 2023; 284:111469. [PMID: 37468090 DOI: 10.1016/j.cbpa.2023.111469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/21/2023]
Abstract
The biological consequences of catch-and-release angling have been studied for decades, yet little is known about the compounding effects of repeated recreational fisheries recaptures on the physiology and behaviour of angled fish. Using heart rate biologgers and behavioural assays, this study investigated the physiological and behavioural consequences of multiple simulated angling events (i.e., repeated stressors) on female steelhead (Oncorhynchus mykiss), under current (6 °C) and future (11 °C) water temperature scenarios. While steelhead in the warmer water temperature scenario demonstrated alterations in cardiac function (e.g., increases in maximum heart rate and scope of heart rate) and evidence of behavioural impairments (e.g., decreases in chase activity and landing time) over the course of two simulated angling events, cold water treated fish had negligible change. Fish subjected to two simulated angling events under warm water temperature conditions tended to demonstrate an increase in recovery time and scope for heart rate, and a decrease in resting heart rate. A second experiment was conducted to test for sex-specific differences in the heart rate response of steelhead subjected to an increase in water temperature. Females demonstrated a higher scope for heart rate when compared to males during the event and during recovery. More work is needed to better understand the interaction between multiple angling events and recovery from these events at various water temperatures, and the biological basis for sex-specific differences in cardiac function and response to challenges. This study contributes to a growing body of evidence on the effects of repeated stressors on wild fish.
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Affiliation(s)
- Amanda L Jeanson
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6, Canada. https://twitter.com/AmandaJeanson
| | - Jamie C Madden
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6, Canada.
| | - Andreas Ekström
- Department of biological and environmental sciences, University of Gothenburg, Medicinaregatan 18, 41390 Gothenburg, Sweden
| | - Andy J Danylchuk
- Department of Environmental Conservation, University of Massachusetts Amherst, 160 Holdsworth Way, Amherst, MA 01003, USA
| | - Nathan Young
- School of Sociological and Anthropological Studies, University of Ottawa, 75 Laurier Ave. E, Ottawa, Ontario K1N 6N5, Canada
| | - Andrew Howarth
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6, Canada
| | - William M Twardek
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6, Canada
| | - Ronald G Twibell
- U.S. Fish and Wildlife Service, Abernathy Fish Technology Center, 1440 Abernathy Creek Road, Longview, WA 98632, USA
| | - Roger P Root
- U.S. Fish and Wildlife Service, Abernathy Fish Technology Center, 1440 Abernathy Creek Road, Longview, WA 98632, USA
| | - Kyle C Hanson
- U.S. Fish and Wildlife Service, Pacific Region, Fish and Aquatic Conservation, 11th Ave., Portland, OR 97232, USA
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON K1S 5B6, Canada. https://twitter.com/SJC_fishy
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Diack G, Bull C, Akenhead SA, van der Stap T, Johnson BT, Rivot E, Patin R, Hernvann PY, Schubert A, Bird T, Saunders M, Crozier W. Enhancing data mobilisation through a centralised data repository for Atlantic salmon (Salmo salar L.): Providing the resources to promote an ecosystem-based management framework. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wilson KL, Bailey CJ, Davies TD, Moore JW. Marine and freshwater regime changes impact a community of migratory Pacific salmonids in decline. GLOBAL CHANGE BIOLOGY 2022; 28:72-85. [PMID: 34669231 PMCID: PMC9298309 DOI: 10.1111/gcb.15895] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/31/2021] [Indexed: 05/21/2023]
Abstract
Marine and freshwater ecosystems are increasingly at risk of large and cascading changes from multiple human activities (termed "regime shifts"), which can impact population productivity, resilience, and ecosystem structure. Pacific salmon exhibit persistent and large fluctuations in their population dynamics driven by combinations of intrinsic (e.g., density dependence) and extrinsic factors (e.g., ecosystem changes, species interactions). In recent years, many Pacific salmon have declined due to regime shifts but clear understanding of the processes driving these changes remains elusive. Here, we unpacked the role of density dependence, ecosystem trends, and stochasticity on productivity regimes for a community of five anadromous Pacific salmonids (Steelhead, Coho Salmon, Pink Salmon, Dolly Varden, and Coastal Cutthroat Trout) across a rich 40-year time-series. We used a Bayesian multivariate state-space model to examine whether productivity shifts had similarly occurred across the community and explored marine or freshwater changes associated with those shifts. Overall, we identified three productivity regimes: an early regime (1976-1990), a compensatory regime (1991-2009), and a declining regime (since 2010) where large declines were observed for Steelhead, Dolly Varden, and Cutthroat Trout, intermediate declines in Coho and no change in Pink Salmon. These regime changes were associated with multiple cumulative effects across the salmon life cycle. For example, increased seal densities and ocean competition were associated with lower adult marine survival in Steelhead. Watershed logging also intensified over the past 40 years and was associated with (all else equal) ≥97% declines in freshwater productivity for Steelhead, Cutthroat, and Coho. For Steelhead, marine and freshwater dynamics played approximately equal roles in explaining trends in total productivity. Collectively, these changing environments limited juvenile production and lowered future adult returns. These results reveal how changes in freshwater and marine environments can jointly shape population dynamics among ecological communities, like Pacific salmon, with cascading consequences to their resilience.
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Affiliation(s)
- Kyle L. Wilson
- Earth to Oceans Research GroupDepartment of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
- Central Coast Indigenous Resource AllianceCampbell RiverBritish ColumbiaCanada
| | - Colin J. Bailey
- Earth to Oceans Research GroupDepartment of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
| | - Trevor D. Davies
- B.C. Ministry of Forests, Lands and Natural Resource Operations and Rural Development, Fish and Aquatic Habitat BranchVictoriaBritish ColumbiaCanada
| | - Jonathan W. Moore
- Earth to Oceans Research GroupDepartment of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
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