Understanding the individual to implement the ecosystem approach to fisheries management

Ward, Taylor D.; Algera, Dirk A.; Gallagher, Austin J.; Hawkins, Emily; Horodysky, Andrij Z.; Jørgensen, Christian; Killen, Shaun S.; McKenzie, David J.; Metcalfe, Julian D.; Peck, Myron A.; Vu, Maria; Cooke, Steven J.

doi:10.1093/conphys/cow005

Cited by 54 publications

(34 citation statements)

References 199 publications

(276 reference statements)

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“…we used short hooking durations). Considering the high trophic positions occupied by most lamind sharks, as well as the importance of individual white sharks to overall population health (Cooke et al 2016, Ward et al 2016, there are important conservation implications when sharks are captured and released. Although these results are preliminary and additional physiological endpoints should be evaluated, our main result may be an encouraging conclusion for white sharks.…”

Section: Discussionmentioning

confidence: 99%

Effects of short-term capture on the physiology of white sharks Carcharodon carcharias: amino acids and fatty acids

Gallagher¹,

Meyer²,

Huveneers³

et al. 2019

Endang. Species. Res.

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Empirical evaluations of how overexploited marine fishes respond to capture stress (physiologically and behaviourally) have become increasingly important for informed fisheries management. These types of studies are, however, lacking for many protected species. Here, we conducted a novel study on the physiology of juvenile white sharks Carcharodon carcharias (139−325 cm fork length), a globally protected and ecologically important predator, in response to a standard fishery interaction using shark-management-alert-in-real-time (SMART) drumlines as part of a bather protection program. Specifically, we assessed the influence of short-term capture duration (average: ~30 min; range: 10−75 min) and other biological (size) and environmental (temperature) variables on blood plasma amino acids and fatty acids, which play essential roles as energy substrates as well as in maintaining physiological functions. None of the assessed amino acids or fatty acids were affected by capture duration, but some were influenced by shark size and water temperature. Our results support the notion that white shark physiology is robust to capture at short capture durations, which has important implications for the fate of released individuals.

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Section: Discussionmentioning

confidence: 99%

Effects of short-term capture on the physiology of white sharks Carcharodon carcharias: amino acids and fatty acids

Gallagher¹,

Meyer²,

Huveneers³

et al. 2019

Endang. Species. Res.

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“…extent to which APAs that allow catch-and-release (i.e., no-take APAs) but prohibit harvest would protect fish phenotypic diversity (Cooke et al 2006). With greater focus on ecosystem approaches to fisheries management and maintenance of phenotypic diversity reflecting the potential for FIE (see Ward et al 2016), APAs will presumably become even more common as a form of evolutionarily enlightened management (Ashley et al 2003). Pagination not final (cite DOI) / Pagination provisoire (citer le DOI)…”

Section: Discussionmentioning

confidence: 99%

Does capture method or the presence of aquatic protected areas influence the selective harvest of behavioural types in largemouth bass?

Cooke

Wilson

Elvidge

et al. 2017

Can. J. Fish. Aquat. Sci.

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Selectively removing fish based on particular traits, such as body size, may shift trait abundance in the remaining population, resulting in a phenomenon called fisheries-induced evolution. Recently, there is growing interest in evaluating the effects of fisheries-induced evolution on fish behaviour. Aquatic protected areas (APAs) have been designated in some habitats in efforts to prohibit harvesting and maintain natural ranges of phenotypic variation for impacted species. Here, we attempted to test whether APAs that prohibit all forms of fishing have an evolutionary influence on adult largemouth bass (Micropterus salmoides) behaviour by investigating the relationship between capture method and behavioural type. Fish, caught via active (angling) and passive (hoop net) capture techniques in both protected (70+ year old APAs in eastern Ontario) and adjacent nonprotected areas, were subjected to standard tests of boldness (refuge emergence, general activity, and flight-initiation-distance). A behavioural syndrome characterized by consistent within-individual variation and correlation of boldness behaviours (activity and refuge emergence) was present. Our results provide evidence that APAs may promote behavioural diversification and protect traits selectively targeted by recreational angling.

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“…But beyond the direct impacts on mortality rates and thus population, community and ecosystem dynamics, predator effects on prey traits (behaviour, physiology, morphology and life histories) also affect prey populations, species interactions and hence communities (Lima, ; Madin, Dill, Ridlon, Heithaus, & Warner, ). These phenotypic changes (plastic or evolutionary) likely have ecological consequences for the ecosystem and the fishery (Arlinghaus et al., ; Ward et al., ). However, both the behavioural change and the ecological consequences can be context‐specific (Palkovacs et al., ) and depend on past evolutionary history (Sih et al ).…”

Section: Population Community Ecosystem and Fisheries‐level Consequmentioning

confidence: 99%

Behavioural responses to human‐induced change: Why fishing should not be ignored

Pauli

Sih

2017

Evolutionary Applications

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Change in behaviour is usually the first response to human‐induced environmental change and key for determining whether a species adapts to environmental change or becomes maladapted. Thus, understanding the behavioural response to human‐induced changes is crucial in the interplay between ecology, evolution, conservation and management. Yet the behavioural response to fishing activities has been largely ignored. We review studies contrasting how fish behaviour affects catch by passive (e.g., long lines, angling) versus active gears (e.g., trawls, seines). We show that fishing not only targets certain behaviours, but it leads to a multitrait response including behavioural, physiological and life‐history traits with population, community and ecosystem consequences. Fisheries‐driven change (plastic or evolutionary) of fish behaviour and its correlated traits could impact fish populations well beyond their survival per se, affecting predation risk, foraging behaviour, dispersal, parental care, etc., and hence numerous ecological issues including population dynamics and trophic cascades. In particular, we discuss implications of behavioural responses to fishing for fisheries management and population resilience. More research on these topics, however, is needed to draw general conclusions, and we suggest fruitful directions for future studies.

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Understanding the individual to implement the ecosystem approach to fisheries management

Cited by 54 publications

References 199 publications

Effects of short-term capture on the physiology of white sharks Carcharodon carcharias: amino acids and fatty acids

Effects of short-term capture on the physiology of white sharks Carcharodon carcharias: amino acids and fatty acids

Does capture method or the presence of aquatic protected areas influence the selective harvest of behavioural types in largemouth bass?

Behavioural responses to human‐induced change: Why fishing should not be ignored

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