Are we any closer to understanding why fish can die after severe exercise?

Holder, Peter; Wood, Chris M.; Lawrence, Michael; Suski, Cory D.; Weber, Jean‐Michel; Danylchuk, Andy J.; Cooke, Steven J.

doi:10.1111/faf.12696

Cited by 35 publications

(19 citation statements)

References 234 publications

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Section: Discussionmentioning

confidence: 99%

“…Considering that high-speed maneuvers are extremely common in predatory evasion ( 25 ) food-searching group motion ( 26 ), and in fish schools in the ocean (Fig. S1), energy savings by fish schooling at high speed and the faster recovery that followed could have a considerable impact on lifetime fitness ( 27 ) ( 28 ). Moreover, considerable energy savings occur even though we observed that individual danio regularly change positions within the school and do not maintain stable inter-individual locations.…”

Section: Discussionmentioning

confidence: 99%

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Energy conservation by collective movement in schooling fish

Zhang

Lauder

2022

Preprint

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Schooling fish move in a viscous fluid environment and are a model system for understanding how group movement dynamics enables energy conservation. But how group movement in the water reduces locomotor cost remains elusive. We measured both aerobic and anaerobic metabolic contributions to energy use in schools of giant danio, and show an energetic reduction per tail beat of up to 126% compared to solitary fish. Fish in schools used a smaller proportion of their aerobic capacity to swim and reduced the anaerobic cost by 2.8 fold, which lowered the total energy expenditure and cost of transport by up to 112% at higher speeds. Fish schools also exhibit a U-shaped metabolism-speed curve, with a minimum metabolic cost at 1 body length s-1, the migratory speed of diverse fish species. This finding suggests that physical constraints on movement through water may be a key driver for the evolution of active directional schooling behaviour in fishes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Energy conservation by collective movement in schooling fish

Zhang

Lauder

2022

Preprint

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“…While the association between diel cycling of riverine water temperatures and recovery from anaerobic by‐product accumulation during and after severe exercise, such as a catch‐and‐release event, remains unknown (Holder et al, 2022; Wood et al, 1983), counterintuitive relationships have been found. As expected, the stress of warm water temperatures in addition to a catch‐and‐release event has generally been shown to act synergistically and intensify the effects of anaerobic exercise and correlate negatively with survival (Cooke & Suski, 2005; Keefe et al, 2022; Raby et al, 2015; Van Leeuwen et al, 2020).…”

Section: Figurementioning

confidence: 99%

Water temperature at the time of the catch‐and‐release event is a better predictor of survival in Atlantic salmon (Salmo salar) than acute water temperature changes before and after

Van Leeuwen,

Keefe,

Young

et al. 2024

Journal of Fish Biology

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Despite studies on the effect of catch‐and‐release on the survival of Atlantic salmon (Salmo salar) being widespread in the literature, studies to date have failed to evaluate the potential role of thermal history. Herein, we show that despite cooler conditions post‐release, 4/18 (22%) salmon died when caught‐and‐released at water temperatures ≥20°C, whereas 1/13 (8%) salmon caught‐and‐released at water temperatures ≤20°C, but who encountered mean water temperatures ≥20°C post‐release, died. We conclude water temperature at time of the catch‐and‐release event remains the most suitable predictor of post‐release survival.

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“…Traps, nets, hooks, electrofishing, and other gear may be used to capture fishes passively or actively as individuals or in groups so that they can be tagged (Brownscombe et al 2019). All fish captures are stressful to some degree for the fish, with the potential to cause injuries and affect their PBS (Davis 2002; Wilson et al 2014; Holder et al 2022). Capturing fish with conventional fishing gear using hooks causes some level of injury (Cooke and Sneddon 2007), and gear such as nets that might not otherwise cause overt injury can cause torn fins and dermal abrasions that may lead to delayed infections (Cooke et al 1998; Baker and Schindler 2009; Twardek et al 2019).…”

Section: The Tagging Process and Its Effects On Fishmentioning

confidence: 99%

The Need for Reporting Rationale and Detailed Methods in Studies that Surgically Implant Fish with Electronic Tracking Devices

et al. 2023

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Each year, thousands of fishes are tagged with electronic devices to study their biology and inform fisheries management. Such research assumes that the process of capturing, tagging, and then holding fish to allow them to recover before release (i.e., the “tagging process”) does not alter the physiology, behavior, and survival of these fish. However, the fish can experience physiological challenges during the tagging process that may affect their behavior and survival. We have observed that the rationale used to establish protocols for holding durations and conditions of fish before and following surgery has received little attention. Here, we provide a perspective that: (1) provides an overview of the tagging process and its effects on the physiology, behavior, and survival of fish; (2) highlights the diverse holding conditions and durations used by researchers (that are often inadequately described and seem arbitrary); and (3) identifies key research needs. We conclude that decisions of whether, how, and for how long to hold tagged fish before release depend on diverse circumstances that need to be evaluated by researchers. We recommend that researchers explicitly report the details of how, when, where, and why tagged fish are held to facilitate protocols that benefit fish welfare, science, and management.

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Are we any closer to understanding why fish can die after severe exercise?

Cited by 35 publications

References 234 publications

Energy conservation by collective movement in schooling fish

Energy conservation by collective movement in schooling fish

Water temperature at the time of the catch‐and‐release event is a better predictor of survival in Atlantic salmon (Salmo salar) than acute water temperature changes before and after

The Need for Reporting Rationale and Detailed Methods in Studies that Surgically Implant Fish with Electronic Tracking Devices

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