Depth‐based barotrauma severity, reflex impairment and stress response in two species of ice‐angled fish

Althoff, Andrew L.; Suski, Cory D.; Louison, Michael J.

doi:10.1111/fme.12493

Cited by 5 publications

(18 citation statements)

References 36 publications

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“…These hormones initiate a variety of secondary responses that include increased perfusion of gill lamellae, the production of glucose by the liver, the release of red blood cells into the bloodstream, and increases in cardiac output and STATUS OF CATCH-AND-RELEASE ICE FISHING metabolic rate, which collectively coordinate increased oxygen distribution and energy availability (Pagnotta and Milligan 1991;Randall and Ferry 1992;Wang et al 1994;Reid et al 1998;Rodnick and Planas 2016;reviewed by Schreck and Tort 2016). Indeed, ice-angled fish have been shown to exhibit elevated stress indices after capture, including higher circulating levels of cortisol and glucose (Louison et al 2017a(Louison et al , 2017bTwardek et al 2018;Logan et al 2019;Althoff et al 2021). For example, in Northern Pike Esox lucius, resting glucose levels remained at about 3 mmol/L, reaching peak values close to 8 mmol/L by 4 h postangling for fish caught through the ice (water temperature ~1°C; Louison et al 2017a).…”

Section: Physiological Responses From the Effects Of Capture And Air ...mentioning

confidence: 99%

“…2018; Althoff et al. 2021). The high prevalence of barotrauma in ice fishing may be problematic as barotrauma was thought to be one of the determining factors affecting mortality in ice‐fished Walleye (Rowe and Esseltine 2001).…”

Section: Barotrauma Considerationsmentioning

confidence: 99%

“…Although these outcomes are potentially detrimental for angled fish, the only published research to date that has examined barotrauma in ice‐angled freshwater fish found that Bluegill and Black Crappie Pomoxis nigromaculatus angled from relatively shallow depths (i.e., 5 m) are likely to suffer from barotrauma (Althoff et al. 2021), which could lead to the aforementioned issues with redescending to depth and being trapped at the water–ice interface. Given the potential importance of barotrauma for the postrelease survival of ice‐angled fish, a better understanding of the fundamental biology associated with barotrauma risk factors, mitigation strategies, and long‐term implications for populations is key in a management context.…”

Section: Barotrauma Considerationsmentioning

confidence: 99%

“…2019; Althoff et al. 2021). For example, in Northern Pike Esox lucius , resting glucose levels remained at about 3 mmol/L, reaching peak values close to 8 mmol/L by 4 h postangling for fish caught through the ice (water temperature ~1°C; Louison et al.…”

Section: Physiological Responses From the Effects Of Capture And Air ...mentioning

confidence: 99%

“…m) are likely to suffer from barotrauma(Althoff et al 2021), which could lead to the aforementioned issues with 324 LAWRENCE ET AL.…”

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confidence: 99%

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Catch‐and‐Release Ice Fishing: Status, Issues, and Research Needs

et al. 2022

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Catch-and-release (C&R) ice fishing is a popular form of recreational angling. At present, there is a considerable deficiency in our understanding of how ice angling affects the physiology, behavior, and survival of fish. Thus, the purpose of this review was to summarize our current knowledge of the consequences of winter C&R fishing on fish biology and to identify key knowledge gaps. Our synthesis revealed that in addition to the typical stressors encountered from C&R fishing during the open-water season, fish that are caught through the ice are subject to several unique challenges, including exposure to subzero air temperatures upon landing as well as unique gear types that are not commonly used in the summer (i.e., passive angling techniques). We currently understand that while C&R angling causes a generalized stress response, cold environments may mute or delay these effects and may also come with additional deleterious consequences, such as tissue freezing. Interestingly, reported mortality can be low following release but can be influenced by gear type, barotrauma, and hooking location. Postrelease behaviors and the spatial ecology of ice-angled fish are poorly understood, but technologies such as telemetry and biologgers and an intensification of research on the topic are starting to produce new insights in this area. As it stands, research on the consequences of winter C&R angling is largely restricted to a handful of popular sport fish species, and these consequences are likely

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Section: Physiological Responses From the Effects Of Capture And Air ...mentioning

confidence: 99%

Section: Barotrauma Considerationsmentioning

confidence: 99%

Section: Barotrauma Considerationsmentioning

confidence: 99%

Section: Physiological Responses From the Effects Of Capture And Air ...mentioning

confidence: 99%

“…m) are likely to suffer from barotrauma(Althoff et al 2021), which could lead to the aforementioned issues with 324 LAWRENCE ET AL.…”

mentioning

confidence: 99%

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Catch‐and‐Release Ice Fishing: Status, Issues, and Research Needs

et al. 2022

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Sex and season influence behaviour and physiology of lake trout following angling

Howell,

Navarroli,

DePasquale

et al. 2024

Conservation Physiology

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Catch-and-release angling exposes fish to challenges that may result in sub-lethal effects or mortality. Lake trout (Salvelinus namaycush) undergo high rates of release because of size-based harvest regulations or voluntary angler behaviour. Here, we examine short-term impairment in lake trout angled during the summer (n = 74) and fall spawning period (n = 33) to inform best practices for angling. Immediately following capture or 0.5 h post-capture, fish underwent reflex and barotrauma assessments, and a small blood sample was collected. Fish were also fitted with an externally mounted biologger equipped with depth, temperature and tri-axial acceleration sensors, that was tethered to allow retrieval of the logger after 14 min. In the summer, reflex impairment and barotrauma at 0 and 0.5 h were significantly correlated. Loss of orientation and bloating were the most observed indicators. Larger fish and those captured at increased depth had higher barotrauma scores, while prolonged fight times decreased the barotrauma score regardless of sampling time. Plasma cortisol, lactate and glucose increased 0.5 h after capture, and extracellular and intracellular pH decreased, all signs that angling was inducing a metabolic response. However, no relationships were found between blood indices and mortality (18.9%). The time required to reach maximum depth after release was longer for fish with increased air exposure but shorter for those with longer fight times. During the fall, fish displayed no mortality or reflex impairment. Anal prolapse was the most observed indicator of barotrauma but only observed in females. Blood indices were most altered 0.5 h after capture, with increased cortisol values for fish that were female, particularly large or captured at deeper depth. Locomotor activity was highest for males and increased with depth. Together, our findings suggest that the effects of catch-and-release angling may be dependent on several factors, including sex, season and angling depth.

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Effectiveness of barotrauma mitigation methods in ice‐angled bluegill and black crappie

Louison

LaRochelle

Cooke

2023

Fisheries Management Eco

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Barotrauma can lead to physical injury and physiological disturbance (elevated stress hormones, and depleted energy stores during post-release struggling) in angled fish.Effectiveness of methods for reducing effects of barotrauma on fish has not been tested on fish subjected to ice-angling. We examined post-release behavior and redescension of bluegill Lepomis macrochirus and black crappie Pomoxis nigromaculatus.Barotrauma was mitigated for fish either during capture by slow retrieval or following capture by venting or re-descension with weights, before observation in a behavioral arena or using small acceleration and depth biologgers. Black crappie spent less time in the center of the behavioral arena and were less likely to successfully re-descend than bluegill. Depth increased over time during the post-release monitoring period, with control fish less likely to descend to depth as fish for which barotrauma was mitigated. Our results demonstrate species-specific effects of ice-angling to inform anglers on the effectiveness of barotrauma mitigation strategies to improve welfare of fish after release.

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Depth‐based barotrauma severity, reflex impairment and stress response in two species of ice‐angled fish

Cited by 5 publications

References 36 publications

Catch‐and‐Release Ice Fishing: Status, Issues, and Research Needs

Catch‐and‐Release Ice Fishing: Status, Issues, and Research Needs

Sex and season influence behaviour and physiology of lake trout following angling

Effectiveness of barotrauma mitigation methods in ice‐angled bluegill and black crappie

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