Abiotic and fishing-related correlates of angling catch rates in pike (Esox lucius)

Kuparinen, Anna; Klefoth, Thomas; Arlinghaus, Robert

doi:10.1016/j.fishres.2010.03.011

Cited by 86 publications

(111 citation statements)

References 49 publications

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“…In turn, the increased use of reed and reduced activity levels likely reduced prey intake and thus pike growth. Indeed, we found that angling effort levels two days prior to an angling event significantly reduced catch rates, which is indicative of altered foraging behaviour of pike (Kuparinen et al, 2010). Unfortunately, due to the study design we are unable to provide unequivocal evidence about which of the two above-mentioned processes had affected growth rate depression in pike in our investigation, but we suspect both to play a role.…”

Section: Discussionmentioning

confidence: 65%

Behavioural and fitness consequences of direct and indirect non-lethal disturbances in a catch-and-release northern pike (Esox lucius) fishery

Klefoth

Kobler

Arlinghaus

2011

Knowl. Managt. Aquatic Ecosyst.

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Key-words:angling, disturbance, fitness, telemetry, Esox luciusIn a catch-and-release recreational fishery fish populations can be impacted by lethal and sub-lethal effects. In terms of sub-lethal effects anglers may directly (catch-and-release) and/or indirectly (angling-related disturbances, e.g. boating) influence the behaviour, growth and fitness of the fish. We quantified the long-term behavioural response of northern pike Esox lucius to angler-induced direct and indirect disturbances using radio-telemetry techniques. A whole lake experimental approach was conducted by dividing the study lake into an angling-disturbed and an angling-undisturbed lake side with 10 radio-tagged fish on each side, representing~20% of the adult pike population. The impact of anglingcaused disturbances on pike behaviour and growth as a proxy for fitness was assessed in a 7 month study period. Direct disturbances reduced swimming activities of pike and resulted in increased selection for structured (i.e., safer) habitat, whereas indirect disturbances had no significant effect on pike behaviour. Growth rates of caught-and-released fish were significantly smaller than those of uncaught pike (44%). Because, fish that were not captured by angling during the study period showed similar growth rates on both sides of the lake, this indicated that only direct angler-induced disturbances influenced pike growth. Our findings call for minimization of angling-related stressors during the process of catchand-release angling to avoid behavioural and fitness impairments of the released fish because these may ultimately have population-level effects. RÉSUMÉLes conséquences des perturbations non-létales directes et indirectes sur le comportement et la fitness de brochets (Esox lucius) dans une pêcherie avec capture et relâcher Mots-clés :pêche, perturbation, fitness, télémétrie, Esox lucius Dans les pêcheries en capture-relâcher, les populations de poissons peuvent être impactées par des effets létaux et sub-létaux. En termes d'effets sub-létaux, les pêcheurs peuvent directement (capture-relâcher) et/ou indirectement (perturbations à lier à la pêche, la navigation, par exemple) influencer le comportement, la croissance et la forme du poisson. Nous avons quantifié la réponse à long terme du comportement du brochet Esox Lucius aux perturbations directes et indirectes induites par les pêcheurs en utilisant des techniques de radio-télémétrie. Une approche expérimentale globale du lac a été réalisée en divisant le lac étudié en un côté du lac perturbé par la pêche et un autre côté non perturbé avec 10 poissons radio-marqués de chaque côté, ce qui représente environ 20 % de la population des brochets adultes. L'impact des perturbations causées par la pêche sur le comportement des brochets et de leur croissance comme un proxy de la fitness a été évalué sur une période d'étude de 7 mois. Les perturbations directes réduisent les activités de déplacement du brochet et conduisent à la sélection accrue d'habitats structurés (i.e., plus sûrs), alors q...

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Section: Discussionmentioning

confidence: 65%

Behavioural and fitness consequences of direct and indirect non-lethal disturbances in a catch-and-release northern pike (Esox lucius) fishery

Klefoth

Kobler

Arlinghaus

2011

Knowl. Managt. Aquatic Ecosyst.

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“…A fishing experiment performed in a commercial fishery showed that longlines set before dawn caught twice as much haddock as those set later in the day (Løkkeborg and Pina 1997). Changes in food intake according to the phases of moon have also been reported, with food intake peaking a few days before the new and full moon (Leatherland et al 1992;Kuparinen et al 2010). Light level, mediated by vision and contrast, can have direct effects on behaviour patterns like activity, swimming speeds and feeding propensity.…”

Section: Diel Rhythm Light Level and Seasonal Feeding Patternsmentioning

confidence: 99%

Towards more efficient longline fisheries: fish feeding behaviour, bait characteristics and development of alternative baits

Løkkeborg

Siikavuopio

Humborstad

et al. 2014

Rev Fish Biol Fisheries

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Better knowledge of food search behaviour in fish is essential for studies that aim to improve longline fishing, particularly through bait development. This review provides an overview of our understanding of how fish detect and locate sources of food odour, focusing on the stimuli and sensory modalities involved, and on factors that affect feeding activity. Studies that identify feeding attractants and efforts to develop alternative longline baits are presented. The review reveals that such studies are few in number, and that to date there are no alternatives to traditional baits in commercial longlining despite the growing demand for these resources, which are also used for human consumption. The chemical compounds that elicit food search behaviour differ from species to species, and species selectivity could be improved by incorporating specific feeding attractants in manufactured baits. The unique properties of chemical stimuli and odour dispersal form the basis for improving longline efficiency through the development of a long-lasting bait. Vision is important in prey capture, and manufactured baits can be made more visible than natural baits by increasing the contrast (e.g. via fluorescent or polarising coatings) and creating motion through buoyancy. Physical properties such as size, shape, texture and strength can also be manipulated in a manufactured bait to improve catch efficiency. Knowledge obtained from studies of various aspects of food search behaviour is of paramount importance for future research aimed at alternative bait development and improving longline fishing.

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“…Once a fish senses the bait, at least two main variables determine whether a fish attacks or not: (1) the size of the used bait and hook and (2) individual's feeding motivation. In addition to internal state variables such as satiation level and potentially intrinsic behavioural tendencies specific to an individual (Tsuboi and Morita, 2004;Askey et al, 2006;Philipp et al, 2009), a number of direct and indirect environmental factors including water temperature and velocity, availability of prey, lunar cycles, and density and size structure of conspecifics affect the individual's feeding motivation (Post et al, 1999;Stoner, 2004;Stoner and Ottmar, 2004;Kuparinen et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Composition of the Eurasian perch (Perca fluviatilis) catches in ice fishing: Does capture order predict body size?

et al. 2012

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Abiotic and fishing-related correlates of angling catch rates in pike (Esox lucius)

Cited by 86 publications

References 49 publications

Behavioural and fitness consequences of direct and indirect non-lethal disturbances in a catch-and-release northern pike (Esox lucius) fishery

Behavioural and fitness consequences of direct and indirect non-lethal disturbances in a catch-and-release northern pike (Esox lucius) fishery

Towards more efficient longline fisheries: fish feeding behaviour, bait characteristics and development of alternative baits

Composition of the Eurasian perch (Perca fluviatilis) catches in ice fishing: Does capture order predict body size?

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