Impact of catch-and-release practices on behavior and mortality of Atlantic salmon (Salmo salar L.) kelts

Halttunen, Elina; Rikardsen, Audun H.; Thorstad, Eva B.; Næsje, Tor F.; Jensen, Jenny Lovisa Alexandra; Aas, Øystein

doi:10.1016/j.fishres.2010.03.017

Cited by 21 publications

(23 citation statements)

References 26 publications

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“…Since the cod were fitted with acoustic tags several weeks prior to the C&R experiment, it was possible to study even small behavioural alterations immediately after the C&R event without bias caused by additional handling (Bridger and Booth 2003;Donaldson et al 2008). While this study design has been used for some freshwater species in natural settings (e.g., Baktoft et al 2013;Cooke et al 2000;Halttunen et al 2010;Klefoth et al 2008), it has not been used for marine species in their natural environment. The most important reasons for this may be that the acoustic transmitters are relatively expensive and that the risk of losing tagged fish from the study area is generally higher in marine environments than in freshwater systems (Cooke et al 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, to avoid such interactions, a separation of the tagging event from the actual release event is needed. Apart from laboratory or seminatural experimental settings (e.g., Anderson et al 1998;), this has, to the best of our knowledge, only been done in a few freshwater studies (e.g., for largemouth bass (Micropterus salmoides) (Cooke et al 2000), European pike (Esox lucius) (Baktoft et al 2013;Klefoth et al 2008), and Atlantic salmon (Salmo salar) (Halttunen et al 2010)). Since the fish need to be recaptured, they have to be available during the experimental angling, which may be a challenge for marine species in particular because fish can easily disperse (Cooke et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment

Ferter

Hartmann

Kleiven

et al. 2015

Can. J. Fish. Aquat. Sci.

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Studying the sublethal effects of catch-and-release (C&R) is challenging, as there are several potential sources of bias. For example, if behavioural alterations immediately after the release event are to be studied, separation of tagging effects from actual C&R effects is required, which is a challenge in the wild, particularly in marine environments. To investigate the effects of C&R on Atlantic cod (Gadus morhua) in their natural environment, 80 cod were caught in fyke nets, fitted with acoustic transmitters, and released. After recovery from tagging and handling for at least 14 days, nine individuals were recaptured and released at least once during experimental angling, following best release practice. All cod survived the C&R event and did not show any large-scale behavioural changes (i.e., changes in diel vertical migrations). However, analysis of small-scale vertical movements showed that three individuals underwent short-term alterations (e.g., reduced or increased swimming activity). This study showed that pretagging fish with acoustic transmitters before experimental angling is an option when investigating fish behaviour immediately after the release event in marine environments. Moreover, release guidelines for cod should be developed, as cod can recover quickly if caught in shallow waters (<20 m) and properly handled and released.Résumé : L'étude des effets sublétaux de la pêche avec remise à l'eau (PRE) pose un défi de taille étant donné différentes sources possibles de biais. Par exemple, l'étude des modifications comportementales immédiatement après la remise à l'eau nécessite de distinguer les effets du marquage de ceux de la PRE, un exercice difficile en milieu naturel, particulièrement en milieu marin. Afin d'étudier les effets de la PRE sur la morue (Gadus morhua) dans son milieu naturel, 80 morues ont été capturées dans des verveux, équipées d'émetteurs acoustiques, puis remises à l'eau. Après une période de récupération d'au moins 14 jours suivant le marquage et la manipulation, neuf individus ont été repris et relâchés au moins une fois durant une pêche expérimentale à la ligne, en respectant les meilleures pratiques de remise à l'eau. Toutes les morues ont survécu à l'évènement de PRE et ne présentaient aucun changement de comportement à grande échelle (c.-à -d. modifications des migrations verticales nycthé-mérales). L'analyse des déplacements verticaux à petite échelle a toutefois révélé que trois individus présentaient des changements de courte durée (p. ex. activité natatoire réduite ou accrue). L'étude démontre que le marquage de poissons avec des émetteurs acoustiques préalablement à la pêche expérimentale à la ligne est une option envisageable pour l'étude du comportement des poissons immédiatement après la remise à l'eau en milieu marin. En outre, des directives relatives à la remise à l'eau des morues devraient être élaborées puisque ces poissons peuvent récupérer rapidement s'ils sont capturés en eau peu profonde (<20 m) et manipulés et remis à l'eau convenablement. [Traduit par ...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment

Ferter

Hartmann

Kleiven

et al. 2015

Can. J. Fish. Aquat. Sci.

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“…For Atlantic salmon in freshwater (Thorstad et al, 2003;Halttunen et al, 2010) and during spawning migrations (Thorstad et al, 2007;Jensen et al, 2010), the impacts of C&R have been studied thoroughly. The results of these studies generally showed very low mortalities (,10%) and minor sublethal effects in terms of spawning migration.…”

Section: Pollack (Pollachius Pollachius)mentioning

confidence: 99%

Unexpectedly high catch-and-release rates in European marine recreational fisheries: implications for science and management

Ferter

Weltersbach

Strehlow

et al. 2013

ICES Journal of Marine Science

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While catch-and-release (C&R) is a well-known practice in several European freshwater recreational fisheries, studies on the magnitude and impact of this practice in European marine recreational fisheries are limited. To provide an overview of the practice and magnitude of C&R among marine recreational anglers in Europe, the existing knowledge of C&R and its potential associated release mortality was collected and summarized. The present study revealed that in several European countries over half of the total recreational catch is released by marine anglers. High release proportions of . 60% were found for Atlantic cod (Gadus morhua), European sea bass (Dicentrarchus labrax), pollack (Pollachius pollachius), and sea trout (Salmo trutta) in at least one of the studied European countries. In the case of the German recreational Baltic Sea cod fishery, release proportions varied considerably between years, presumably tracking a strong year class of undersized fish. Reasons for release varied between countries and species, and included legal restrictions (e.g. minimum landing sizes and daily bag limits) and voluntary C&R. Considering the magnitude of C&R practice among European marine recreational anglers, post-release mortalities of released fish may need to be accounted for in estimated fishing mortalities. However, as the survival rates of European marine species are mostly unknown, there is a need to conduct post-release survival studies and to identify factors affecting post-release survival. Such studies could also assist in developing species-specific, best-practice guidelines to minimize the impacts of C&R on released marine fish in Europe.

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“…Possible factors that were unique to previously hooked fish that might explain their increased subsequent hook avoidance relative TA B L E 2 Parameter estimates from the linear mixed model examining the effect of angling treatment, period (i.e., acclimation, angling exposure treatment and vulnerability assessment) and the corresponding day on heart rate response to fish in the social exposure treatment include the following: repeated visual stimuli of other conspecifics being hooked, combined with hook injury, physical exhaustion and air exposure, which have been found to result in elevated plasma levels of stress indicators, such as cortisol and glucose (Arlinghaus, Klefoth, Cooke, Gingerich, & Suski, 2009;Cooke et al, 2001;Donaldson et al, 2010;Pullen et al, 2017). Moreover, it is possible that these factors triggered a tertiary stress response in the privately hooked fish (Barton, 2002; Wendelaar Bonga, 1997), leading to behavioural changes following C&R (Arlinghaus et al, 2009;Halttunen et al, 2010;Klefoth et al, 2011;Schreer, Resch, Gately, & Cooke, 2005). In addition, the reduced heart rate displayed during the subsequent days in the private exposure treatment may also indicate that fish habituated to the stressor of C&R angling (Barton, Schreck, & Barton, 1987).…”

Section: Discussionmentioning

confidence: 99%

Socially induced stress and behavioural inhibition in response to angling exposure in rainbow trout

Wallerius

Gräns

Koeck

et al. 2019

Fisheries Management Eco

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It is well known that fish can learn to avoid angling gear after experiencing a catch‐and‐release event, that is, after a private hooking experience. However, the possible importance of social information cues and their influence on an individual's vulnerability to angling remains largely unexplored, that is, social experience of a conspecific capture. The effects of private and social experience of hooking on the stress response of fish and subsequent catch rates were examined. Hatchery‐reared rainbow trout, Oncorhynchus mykiss (Walbaum), were implanted with heart rate loggers and experimentally subjected to private or social experience of hooking. Private and social experience of angling induced an increased heart rate in fish compared with naïve control fish. While private experience of hooking explained most of the reduced vulnerability to capture, no clear evidence was found that social experience of hooking affected angling vulnerability in fish that had never been hooked before. While both private and social experiences of angling constitute significant physiological stressors for rainbow trout, only the private experience reduces an individual's vulnerability to angling and in turn affecting population‐level catchability.

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Impact of catch-and-release practices on behavior and mortality of Atlantic salmon (Salmo salar L.) kelts

Cited by 21 publications

References 26 publications

Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment

Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment

Unexpectedly high catch-and-release rates in European marine recreational fisheries: implications for science and management

Socially induced stress and behavioural inhibition in response to angling exposure in rainbow trout

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