The post-release behaviour and fate of tournament-caught smallmouth bass after ‘fizzing’ to alleviate distended swim bladders

Nguyen, Vivian M.; Gravel, Marie-Ange; Mapleston, Amos; Hanson, Kyle C.; Cooke, Steven J.

doi:10.1016/j.fishres.2008.12.003

Cited by 21 publications

(27 citation statements)

References 22 publications

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“…Under such conditions, the severity of barotrauma may increase and render fish positively buoyant, with the potential of sustaining further physical damage through contact with conspecifics and the top of the live well. Equally important, tournament fishes are almost always eventually released in shallow water at the lakes' edge where compromised buoyancy would expose them to increased predation, exposure or boat traffic (Keniry et al , 1996; Nguyen et al , 2009). For such individuals, the only viable option may be venting immediately after capture, although clearly anglers need to be educated about the correct techniques and the size of venting needles needs to be appropriate for the species to minimize injuries.…”

Section: Discussionmentioning

confidence: 99%

“…Most studies that have assessed the effects of barotrauma in teleosts have used laboratory‐based hyperbaric chambers (Shasteen & Sheehan, 1997; Parker et al , 2006), field‐based tagging (mark–recapture or biotelemetry) (Bruesewitz et al , 1993; Nguyen et al , 2009) or confinement experiments (Render & Wilson, 1994; Diamond & Campbell, 2009). Of these methods, mark–recapture and biotelemetry tagging provide the most holistic assessment of the fate of released fishes.…”

Section: Introductionmentioning

confidence: 99%

“…Of these methods, mark–recapture and biotelemetry tagging provide the most holistic assessment of the fate of released fishes. The former relies on accurate returns from anglers and both approaches are often very expensive, which can mean low replication and difficulty in differentiating mortality from barotrauma from other cumulative catch‐and‐release effects (Nguyen et al , 2009; Sumpton et al , 2010). In contrast, although hyperbaric chambers can isolate the effects of barotrauma and assess the utility of mitigation methods across adequate replication and under controlled conditions, such studies are logistically difficult and considerably removed from natural environments (Shasteen & Sheehan, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Effects of barotrauma and mitigation methods on released Australian bass Macquaria novemaculeata

Roach

Hall

Broadhurst

2011

Journal of Fish Biology

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The effects of barotrauma on the short-term mortality and physical condition of Australian bass Macquaria novemaculeata were investigated after being: (1) conventionally angled and released during two tournaments in deep impoundments and (2) released untreated or subjected to venting or recompression during a manipulative experiment. All fish were released into two 20 m deep bathy-cages and monitored for 3 days. Of 238 M. novemaculeata angled during the tournaments, 43 (18·1%) had clinical signs of barotrauma or were vented and five of these later died (11·6% mortality). Catch histories varied significantly between both barotrauma and non-barotrauma fish and tournaments, but only hook ingestion significantly influenced mortality (P < 0·05). During the manipulative experiment, venting significantly influenced mortality (13·3%) compared to no treatment or recompression (no deaths). Magnetic resonance images and dissections of barotrauma fish indicated large variation among clinical signs. On the basis of these results, wherever possible M. novemaculeata suffering barotrauma should be immediately released with no treatment. Fish that are unable to resubmerge should be recompressed, while those held in live wells and released in shallow water should be vented.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of barotrauma and mitigation methods on released Australian bass Macquaria novemaculeata

Roach

Hall

Broadhurst

2011

Journal of Fish Biology

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“…Crucially, a distended swim bladder can prevent fish from returning to depth, where shelter from predators is afforded. Fish with distended or ruptured swim bladders floating at the surface after capture are extremely vulnerable to predation from aquatic and avian predators (Ross and Hokenson 1997;Jarvis and Lowe 2008;Nguyen et al 2009). Gitschlag and Renaud (1994) concluded that postrelease survival of red snapper (L. campechanus, Lutjanidae) was inversely related to the depth from which the fish was captured.…”

Section: Barotraumamentioning

confidence: 99%

The understudied and underappreciated role of predation in the mortality of fish released from fishing gears

et al. 2013

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The assumption that animals released from fishing gears survive has frequently been scrutinized by researchers in recent years. Mortality estimates from these research efforts can be incorporated into management models to ensure the sustainability of fisheries and the conservation of threatened species. Post‐release mortality estimates are typically made by holding the catch in a tank, pen or cage for short‐term monitoring (e.g. 48 h). These estimates may be inaccurate in some cases because they fail to integrate the challenges of the wild environment. Most obvious among these challenges is predator evasion. Stress and injury from a capture experience can temporarily impair physiological capacity and alter behaviour in released animals, a period during which predation risk is likely elevated. In large‐scale commercial fisheries, predators have adapted their behaviour to capitalize on impaired fishes being discarded, while in recreational catch‐and‐release fisheries, exercise and air exposure can similarly impede the capacity for released fish to evade opportunistic predators. Owing to the indirect and often cryptic nature of this source of mortality, very few studies have attempted to document it. A survey of the literature demonstrated that <2% of the papers in the combined realms of bycatch and catch‐and‐release have directly addressed or considered post‐release predation. Future research should combine field telemetry and laboratory studies using both natural and simulated predation encounters and incorporate physiological and behavioural endpoints. Quite simply, predation is an understudied and underappreciated contributor to the mortality of animals released from fishing gears.

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“…Survival rate of these individuals is questionable because of the physiological effects that decompression causes when they are removed from great depths and brought rapidly to the surface (Nguyen, 2009). Species with the highest resistance to this practice belong to families Ariidae, Sciaenidae, and Haemulidae.…”

Section: Discussionmentioning

confidence: 99%

Sustainability of capture of fish bycatch in the prawn trawling in northeastern Brazil

Júnior¹,

Araújo²,

Feitosa³

2013

Neotrop. ichthyol.

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The prawn fishery produces more discards than any other type of catch and captures a large quantity of immature individuals. This research aimed to assess the sustainability of capture of fish bycatch in prawn trawling. Each species was assessed according to two groups of criteria: (1) their relative vulnerability to capture by trawl and mortality due to this fishery (2) recovery capacity of the specie after a possible collapse of the population. Within each group, each species was ranked (1-3), being 1 the highest value, meaning the species is highly susceptible to capture or has a low resilience. A total of 8,894 individuals were caught, belonging to 28 families. The species with capture least sustainable were Stellifer rastrifer and Isopisthus parvipinnis. These latter species are highly susceptible since they are either benthic or demersal, and their diet may include benthic organism. Chirocentrodon bleekerianus and Anchoa tricolor were the most likely fishes to be sustainable since they are pelagic, they are least susceptible to capture by trawls, and also have a greater capacity to recover, as most individuals have bred before capture. Due to the fishery's multi-specific nature, it is difficult to implement mitigation measures for specific species. Thus, the creation of fishing exclusion zones should be considered as the most appropriate management measure.A pesca de arrasto de camarão produz mais descarte do que qualquer outra pescaria e captura uma grande quantidade de indivíduos imaturos. Esta pesquisa visa determinar a sustentabilidade da captura da ictiofauna acompanhante na pesca de arrasto de camarão. Cada espécie foi analisada de acordo com dois grupos de critérios: (1) vulnerabilidade à captura pela rede de arrasto e mortalidade ocasionada por esta pescaria; e (2) capacidade de recuperação da população para minimizar. Dentro de cada critério as espécies foram classificadas de 1 a 3, sendo 1 o valor mais alto, indicando que a espécie é altamente susceptível à captura ou tem baixa capacidade de recuperação. Um total de 8.894 indivíduos foram capturados, pertencendo a 28 famílias. As espécies com captura menos sustentável foram Stellifer rastrifer e Isopisthus parvipinnis. Estas espécies são altamente susceptíveis, pois são bentônicas ou demersais e suas dietas incluem organismos bentônicos. Chirocentrodon bleekerianus e Anchoa tricolor foram as espécies que apresentaram a captura mais sustentável. Por serem pelágicas, são menos susceptíveis à captura por arrastos de fundo, além disto, apresentaram uma grande capacidade de recuperação, pois a maior parte dos indivíduos capturados encontrava-se acima do seu tamanho de primeira maturação sexual. Devido à natureza multiespecífica da pescaria é difícil implementar medidas mitigatórias específicas. Assim, a criação de zona de exclusão de pesca deve ser considerada como a medida de manejo mais adequada.

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The post-release behaviour and fate of tournament-caught smallmouth bass after ‘fizzing’ to alleviate distended swim bladders

Cited by 21 publications

References 22 publications

Effects of barotrauma and mitigation methods on released Australian bass Macquaria novemaculeata

Effects of barotrauma and mitigation methods on released Australian bass Macquaria novemaculeata

The understudied and underappreciated role of predation in the mortality of fish released from fishing gears

Sustainability of capture of fish bycatch in the prawn trawling in northeastern Brazil

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