Effects of air exposure on mortality and growth of undersized pikeperch, <i>Sander lucioperca</i>, at low water temperatures with implications for catch‐and‐release fishing

Arlinghaus, Robert; Hallermann, Jan

doi:10.1111/j.1365-2400.2007.00536.x

Cited by 28 publications

(25 citation statements)

References 31 publications

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“…72% mortality within 12 h following exercise and 60 s of air). There are only a few other studies, even in the presence of extreme water temperatures, that have documented similarly high levels of mortality in salmonids that are not cannulated (reviewed in Muoneke & Childress 1994;Arlinghaus & Hallerman 2007;Donaldson et al 2011). pike-perch, Sander lucioperca L.; Arlinghaus & Hallerman 2007), while zero mortality of air exposed fish was reported in many other studies (e.g.…”

Section: Confounded Mortality Estimatesmentioning

confidence: 99%

The physiological consequences of catch‐and‐release angling: perspectives on experimental design, interpretation, extrapolation and relevance to stakeholders

Cooke

Donaldson

O’Connor

et al. 2012

Fisheries Management Eco

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167

156

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Over the past 20 years, there has been a dramatic increase in the use of physiological tools and experimental approaches for the study of the biological consequences of catch‐and‐release angling practices for fishes. Beyond simply documenting problems, physiological data are also being used to test and refine different strategies for handling fish such that stress is minimised and survival probability maximised, and in some cases, even for assessing and facilitating recovery post‐release. The inherent sensitivity of physiological processes means that nearly every study conducted has found some level of – unavoidable – physiological disturbance arising from recreational capture and subsequent release. An underlying tenet of catch‐and‐release studies that incorporate physiological tools is that a link exists between physiological status and fitness. In reality, finding such relationships has been elusive, with further extensions of individual‐level impacts to fish populations even more dubious. A focus of this article is to describe some of the challenges related to experimental design and interpretation that arise when using physiological tools for the study of the biological consequences of catch‐and‐release angling. Means of overcoming these challenges and the extrapolation of physiological data from individuals to the population level are discussed. The argument is presented that even if it is difficult to demonstrate strong links to mortality or other fitness measures, let alone population‐level impacts of catch‐and‐release, there remains merit in using physiological tools as objective indicators of fish welfare, which is an increasing concern in recreational fisheries. The overarching objective of this paper is to provide a balanced critique of the use of physiological approaches in catch‐and‐release science and of their role in providing meaningful information for anglers and managers.

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Section: Confounded Mortality Estimatesmentioning

confidence: 99%

The physiological consequences of catch‐and‐release angling: perspectives on experimental design, interpretation, extrapolation and relevance to stakeholders

Cooke

Donaldson

O’Connor

et al. 2012

Fisheries Management Eco

Self Cite

167

156

View full text Add to dashboard Cite

show abstract

“…In a laboratory setting, extended air exposure after exercise similar to that induced during C&R angling caused higher mortality than when air exposure was avoided (Ferguson and Tufts, 1992). In a pond study, mortality was lowest for fish that were not exposed to air relative to air exposure periods of 60, 120 or 240 s (Arlinghaus and Hallermann, 2007). In field settings, extended air exposure has been implicated in loss of equilibrium and post-release predation .…”

Section: Introductionmentioning

confidence: 97%

Evaluation of the interactive effects of air exposure duration and water temperature on the condition and survival of angled and released fish

et al. 2007

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At present, there is a reasonable understanding of the independent effects of catch-and-release (C&R) angling stressors, such as air exposure and water temperature, on endpoints such as physiological disturbance, behavioural impairment and mortality. However, little is known about the multiplicative or interactive nature of these different C&R stressors. This study used bluegill (Lepomis macrochirus) as a model to evaluate the combined effects of water temperature and air exposure on fish behaviour, equilibrium status and short-term mortality following C&R. Experiments were replicated over 3 days with different ambient water temperatures (18.3, 22.8 and 27.4 • C). On each day, fish were captured by standard angling techniques, exposed to a range of air exposure durations (0, 30, 60, 120, 240, 480 and 960 s), and subsequently monitored for behavioural changes (within the first 300 s) and short-term (48 h) delayed mortality. Additional fish were captured by seine net for use as controls. There was an interactive effect of temperature and air exposure, whereby fish exposed to the highest temperature and longer air exposure durations lost equilibrium more often and had depressed ventilation rates relative to fish exposed to minimal air exposure and the lowest temperature. Immediate mortality at the lowest temperatures was negligible. However, significant delayed mortality (up to 80%) was noted at the highest water temperature (27.4 • C) in fish exposed to the three longest air exposure groups. In addition, at 27.4 • C, mortality among fish exposed to 480 and 960 s occurred at a faster rate than in any other treatment group. These results indicate that at low to moderate water temperatures, extended air exposure for bluegill may result in little mortality. However, at high water temperatures, short-term mortality (within 48 h) can be substantial, especially for fish that experience extended air exposure durations. Anglers and managers must recognize that C&R stressors can interact to have more dire consequences than when applied independently.

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“…If such effects contributed towards mortalities, this can be easily addressed by limiting air exposure. Alternatively, if the hook can be easily removed, any bleeding individuals could be released underwater (Arlinghaus and Hallermann, 2007; Butcher et al., 2007).…”

Section: Discussionmentioning

confidence: 99%

Effects of angler-induced exercise and air exposure on the mortality of mouth-hooked yellowfin bream (Acanthopagrus australis)

Reynolds¹,

Broadhurst²,

Butcher³

et al. 2009

Journal of Applied Ichthyology

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SummaryTwo aquaria experiments were done to quantify the short-term (up to 10 days) mortality of mouth-hooked yellowfin bream (Acanthopagrus australis) after short and long playing times (5 vs 30 s) followed by different extremes in air exposure (2.5 vs 5 min). During exp. 1, 44 fish were angled from randomlyselected 5000-L holding tanks, played for 5 s, subjected to either 2.5 or 5 min air exposure and then released into replicate sea cages located in a 1050 KL pool. Appropriate numbers of controls were transferred without air exposure from an unfished 5000-L tank into separate cages in the pool. The same methodology was applied during exp. 2, except that 31 yellowfin bream were angled and played for 30 s (rather than 5 s) before being subjected to the different durations of air exposures and released. Fish were monitored for 10 and 5 days in exps. 1 and 2, respectively. Concentrations of plasma cortisol and glucose were collected from samples of fish on the first and last days of the experiments. The only mortalities were two individuals (one from each treatment) during exp. 2, attributed to clotted blood (from hook wounds) across the gill lamellae. Surviving individuals at the end of the experiments had variable elevations in plasma cortisol but not glucose, indicating acute stress responses that were probably evoked during sampling. The conclusion is that yellowfin bream are resilient to being mouth-hooked, exercised and exposed to air before being released. However, to minimise impacts, individuals should be released as soon as possible, especially when blood is present at the hook wound.

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Effects of air exposure on mortality and growth of undersized pikeperch, Sander lucioperca, at low water temperatures with implications for catch‐and‐release fishing

Cited by 28 publications

References 31 publications

The physiological consequences of catch‐and‐release angling: perspectives on experimental design, interpretation, extrapolation and relevance to stakeholders

The physiological consequences of catch‐and‐release angling: perspectives on experimental design, interpretation, extrapolation and relevance to stakeholders

Evaluation of the interactive effects of air exposure duration and water temperature on the condition and survival of angled and released fish

Effects of angler-induced exercise and air exposure on the mortality of mouth-hooked yellowfin bream (Acanthopagrus australis)

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