Physiological effects of catch and release angling in Atlantic salmon (&lt;I&gt;Salmo salar&lt;/I&gt;) at different stages of freshwater migration

Brobbel, M.A.; Wilkie, M.P.; Davidson, Kevin; Kieffer, James D.; Bielak, A.T.; Tufts, Bruce L.

doi:10.1139/cjfas-53-9-2036

Cited by 21 publications

(3 citation statements)

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“…As the fight time of a fish increases, so do levels of extracellular acidosis and blood and muscle lactate. These physiological responses cause a decreased extracellular pH, plasma bicarbonate, adenosine triphosphate, and glycogen that all considerably decrease likelihood of recovery following capture (Tufts et al 1991;Booth et al 1995;Brobbel et al 1996;Wilkie et al 1996Wilkie et al , 1997. When the catch and release process is paired with high water temperatures and resultant lower dissolved oxygen, the combination becomes synergistic, and the complete exhaustion of aerobic and anaerobic muscular fuels, scope, and cardiac function are possible (Wood et al 1983;Wilkie et al 1996;Anderson et al 1998;Breau 2013).…”

Section: Discussionmentioning

confidence: 99%

Mortality of Atlantic salmon after catch and release angling: assessment of a recreational Atlantic salmon fishery in a changing climate

Leeuwen

Dempson

Burke

et al. 2020

Can. J. Fish. Aquat. Sci.

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Human activities have the potential to accelerate population-level decline by contributing to climate warming and decreasing the capacity of species to survive warming temperatures. Here we build a predictive model to test interactions between river warming and catch-and-release mortality in recreational fisheries for Atlantic salmon (Salmo salar L.) by compiling and analyzing published data. We then test if warming has occurred in rivers where angling occurs, and if angling opportunities have been restricted through increased river closures due to high water temperatures. We find that catch and release mortalities are low (< 0.05) at cool river temperatures (< 12°C). At river temperatures often leading to fishery closures (between 18 and 20°C), mortalities range from 0.07 to 0.33 (mean = 0.16). River temperatures on the east and southeast coasts of Newfoundland have warmed leading to an increase in fishery closures in recent years. By contrast, river temperatures in southern Labrador have warmed slightly, with only one documented river closure. Accordingly, increasing temperatures will increase the frequency of river closures and likely result in higher mortality in caught and released Atlantic salmon in rivers that remain open to catch and release angling at warm water temperatures.

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Section: Discussionmentioning

confidence: 99%

Mortality of Atlantic salmon after catch and release angling: assessment of a recreational Atlantic salmon fishery in a changing climate

Leeuwen

Dempson

Burke

et al. 2020

Can. J. Fish. Aquat. Sci.

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“…In some cases, severe ion imbalances can lead to mortality (Wood et al 1983;Wood 1988Wood , 1991. Measures of plasma ion balance (plasma osmolality) have typically been used to measure the stress effects of catch-and-release angling (a practice that results in brief exhaustive exercise and subsequent release of the angled fish) on fate and physiology (e.g., Brobbel et al 1996). Measuring minerals (e.g., Ca 2+ , Mg + , phosphorous) can also yield valuable information on the nutritional condition of fish (Wagner and Congleton 2004).…”

Section: Ions and Mineralsmentioning

confidence: 99%

Expanding the “toolbox” for studying the biological responses of individual fish to hydropower infrastructure and operating strategies

et al. 2009

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To date, few studies have evaluated sub-organismal responses (e.g., physiological or energetic consequences) of individual fish to hydropower infrastructure (e.g., fishways, turbines) or operations (e.g., fluctuating flows, low flows). The field of “conservation physiology” (i.e., the use of physiological information to enhance conservation) is expanding rapidly and has great promise for hydropower research. However, there is a need to both expand the “toolbox” available to practitioners and to validate these tools for use in this context. This synthetic report details the behavioural, energetic, genomic, molecular, forensic, isotopic, and physiological tools available for studying sub-organismal responses of fish to hydropower infrastructure and operating procedures with a critical assessment of their benefits and limitations. Furthermore, this paper provides two case studies where behavioural, energetic, and physiological tools have been used in hydropower settings. Progressive and interdisciplinary approaches to hydropower research are needed to advance the science of sustainable river regulation and hydropower development. The expanded toolbox could be used by practitioners to assess fishway performance, migration delays, and fish responses to fluctuating flows through a more mechanistic approach than can be offered by only focusing on population metrics or indices of community structure. These tools are also relevant for the evaluation of other anthropogenic impacts such as water withdrawal for irrigation or drinking water, habitat alteration, and fisheries interactions.

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“…Skepticism regarding the supporting science has been linked to high variability in survival estimates (survival probabilities in the primary literature range from 0.2 to 1.0; Van Leeuwen et al, 2020). In a recent study (Van Leeuwen et al, 2020), the mean sample size from 18 published studies on the survival of anadromous Atlantic salmon following catch and release was 40 (however, only 4 studies with a mean = 16 for caught and released fish >18°C) and most catch‐and‐release studies ranged from 12 h (Brobbel et al, 1996) to 4 months (Gargan et al, 2015; Thorstad et al, 2003). In addition, previous studies often differed in gear types (lures vs. artificial flies, treble vs. single hooks and barbed vs. barbless hooks), techniques (simulated capture vs. actual capture and internal tags vs. external tags vs. holding fish in cages), geographic and physical location (laboratory or field), water conditions, or lacked a control group (7/18 published studies) needed to disentangle natural or procedural mortality from catch‐and‐release‐induced mortality (Van Leeuwen et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Long‐term survival of Atlantic salmon following catch and release: Considerations for anglers, scientists and resource managers

Keefe

Young

Leeuwen

et al. 2022

Fisheries Management Eco

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To evaluate the scientific basis for catch and release as a management tool, a comprehensive 3‐year study compared long‐term survival of Atlantic salmon that were either angled, radio‐tagged and released, or trapped, radio‐tagged and released (control). Overall, the mean survival probability of angled salmon relative to the control group was between 0.94 and 0.98. At cool to moderate water temperatures (10–18°C) mean survival of angled salmon was between 0.96 and 0.98. Although the number of salmon caught and released above 21°C was low, catchability was slightly reduced at warm water temperatures (21–25°C) and the mean survival probability was between 0.43 and 0.69. Lastly, the number of fish that survived the spawning period did not differ between the angled group and the control group. However, the mean percentage of fish that overwintered and migrated downstream through a counting fence to sea was between 9% and 10% for those that were caught and released and between 13% and 19% for the control group. Results of this study suggest that mortality of caught and released Atlantic salmon can be delayed but remains low at cool to moderate water temperatures.

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Physiological effects of catch and release angling in Atlantic salmon (<I>Salmo salar</I>) at different stages of freshwater migration

Cited by 21 publications

References 0 publications

Mortality of Atlantic salmon after catch and release angling: assessment of a recreational Atlantic salmon fishery in a changing climate

Mortality of Atlantic salmon after catch and release angling: assessment of a recreational Atlantic salmon fishery in a changing climate

Expanding the “toolbox” for studying the biological responses of individual fish to hydropower infrastructure and operating strategies

Long‐term survival of Atlantic salmon following catch and release: Considerations for anglers, scientists and resource managers

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