Absence of Handling‐Induced <i>Saprolegnia</i> Infection in Juvenile Rainbow Trout with Implications for Catch‐and‐Release Angling

Schwabe, Martin; Meinelt, Thomas; Phan, Thuy M.; Cooke, Steven J.; Arlinghaus, Robert

doi:10.1080/02755947.2014.959673

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…In expanding the breadth of knowledge of C&R angling practices, considering real-life recreational fishing conditions, angler behaviors, and fish characteristics are also important. For example, there have been numerous studies on the impacts of C&R practices on rainbow trout (e.g., Ferguson and Tufts, 1992;Meka, 2004;Schwabe et al, 2014), yet the majority have been on captive fish of hatchery origin. Twardek et al (2018) explored the impacts of C&R in situ for wild steelhead (i.e., rainbow trout with an adult life stage in the ocean) in the Bulkley River, British Columbia, Canada, generating a set of best angling practices specifically tailored to that fishery.…”

Section: Minimizing Biological Impactsmentioning

confidence: 99%

The future of recreational fisheries: Advances in science, monitoring, management, and practice

et al. 2019

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Recreational fisheries (RF) are complex social-ecological systems that play an important role in aquatic environments while generating significant social and economic benefits around the world. The nature of RF is diverse and rapidly evolving, including the participants, their priorities and behaviors, and the related ecological impacts and social and economic benefits. RF can lead to negative ecological impacts, particularly through overexploitation of fish populations and spread of non-native species and genotypes through stocking. Hence, careful management and monitoring of RF is essential to sustain these ecologically and socioeconomically important resources. This special issue on recreational fisheries contains diverse research, syntheses, and perspectives that highlight the advances being made in RF research, monitoring, management, and practice, which we summarize here. Co-management actions are rising, often involving diverse interest groups including government and non-government organizations; applying collaborative management practices can help balance social and economic benefits with conservation targets. Technological and methodological advances are improving the ability to monitor biological, social, and economic dynamics of RF, which underpin the ability to maximize RF benefits through management actions. To ensure RF sustainability, much research focuses on the ecological aspects of RF, as well as the development of management and angling practices that reduce negative impacts on fish populations. For example, angler behavior can be influenced to conform to conservation-minded angling practices through regulations, but is often best accomplished through growing bottom-up social change movements. Anglers can also play an important role in fisheries monitoring and conservation, including providing data on fish abundance and assemblages (i.e., citizen science). The increasing impacts that growing human populations are having on the global environment are threatening many of the natural resources and ecosystem services they provide, including valuable RF. However, with careful development of research initiatives, monitoring and management, sustainable RF can generate positive outcomes for both society and natural ecosystems and help solve allocation conflicts with commercial fisheries and conservation. which ultimately determines the degree of environmental impacts across aquatic landscapes (

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Section: Minimizing Biological Impactsmentioning

confidence: 99%

The future of recreational fisheries: Advances in science, monitoring, management, and practice

et al. 2019

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“…Post-release survival and fitness may be influenced by injuries sustained when landing nets are used, including frayed fins, dermal abrasion, bleeding, mucus (i.e., slime) loss and scale loss. Fin fray and abrasion can lead to fin rot and reduced post-release swimming abilities (Latremouille, 2003), while mucus or scale loss and abrasion can make fish susceptible to infection such as opportunistic fungal growth (Steeger et al, 1994;Jones, 2001;Barthel et al, 2003;Colotelo and Cooke, 2011;Schwabe et al, 2014). Longer fight times are also associated with greater depletion of white muscle energy stores (e.g., glycogen, ATP) and accumulation of anaerobic by-products such as muscle lactate (Gustaveson et al, 1991;Wood, 1991;Kieffer et al, 1996;Kieffer, 2000).…”

Section: Introductionmentioning

confidence: 99%

Using a novel biologging approach to assess how different handling practices influence the post-release behaviour of Northern Pike across a wide range of body sizes

LaRochelle

Burton

Madden

et al. 2023

Aquat. Living Resour.

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There is a growing body of research focused on how angled fish respond to catch-and-release (C&R). However, most of those studies do not span a wide range of body sizes for the targeted species. Physical injury and physiological responses to C&R can be size-dependent, and methods used for landing fish of different sizes vary. As such, studying the response to C&R across a range of fish sizes may help inform best practices that improve outcomes for released fish. Northern Pike (Esox lucius) widely ranges in body size. Anglers may land them by hand, cradle, or net, and they are often released voluntarily or to comply with regulations. We angled 25 Northern Pike (total length 620–1030 mm) from one population and recorded fight, handling, and unhooking times across landing methods (i.e., hand, cradle, net). Prior to release, a pop-off biologging package was temporarily affixed to each fish to monitor locomotor activity, depth, and water temperature during a 12-h period post-release to understand how the interaction of landing method and body size influenced post-release behaviour and short-term fate. Fight and handling time increased with increasing body size. Northern Pike landed with a cradle or net had shorter fight times but longer handling times, compared to fish landed by hand. Post-release locomotor activity was greater for larger fish and those landed with a net. Fish <775mm and landed by hand had greater locomotor activity than fish landed with a net or cradle, while fish >775mm landed by hand had reduced locomotor activity compared to fish landed with a net. There was no post-release mortality observed. Collectively, anglers should use a net for Northern Pike >775 mm to avoid long fight times and reduce post-release exhaustion, but also attempt to reduce the extent of handling associated with fish landed by net.

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“…; Schwabe et al. ). These three metrics (fin fraying, scale loss, and mucus loss) can index the tissue damage and disturbance experienced by fish upon landing.…”

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confidence: 97%

Influence of Landing Net Mesh Type on Handling Time and Tissue Damage of Angled Brook Trout

Lizée

Lennox

Ward

et al. 2018

N American J Fish Manag

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Recreational catch-and-release angling is a popular activity. Anglers often use landing nets to shorten fight times, reduce stress on the line and rod, restrict fish movement to facilitate dehooking of the fish, and protect fish from undue harm caused by handling or dropping. Landing nets are constructed using a variety of netting materials that could have varied consequences when coming in contact with fish. Salmonids are among the most targeted fishes in the world, but little is known about how landing nets contribute to postcapture tissue damage. We compared handling time and instances of fin fraying, scale loss, and mucus loss sustained by Brook Trout Salvelinus fontinalis landed by four net mesh types (i.e., large, knotless rubber mesh; knotless nylon micromesh; large, knotted polypropylene mesh; and small, knotless rubber-coated nylon mesh) or by using bare wet hands in a recreational fishery. The knotted polypropylene mesh resulted in the greatest extent of fin fraying, whereas the bare wet hands method, knotless nylon micromesh, and rubber-coated nylon mesh resulted in the most scale loss. Interestingly, extended handling times were noted for several mesh types (i.e., knotless nylon micromesh and rubber-coated nylon mesh) relative to bare wet hands because of hook entanglement in the netting material. However, using bare wet hands to land Brook Trout resulted in higher odds of the fish being dropped into the bottom of the boat. We concluded that the large, knotless rubber mesh was the least damaging to Brook Trout. Changes to angler practices, such as using appropriate landing tools, can benefit fish welfare in catch-and-release fisheries.

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Absence of Handling‐Induced Saprolegnia Infection in Juvenile Rainbow Trout with Implications for Catch‐and‐Release Angling

Cited by 8 publications

References 32 publications

The future of recreational fisheries: Advances in science, monitoring, management, and practice

The future of recreational fisheries: Advances in science, monitoring, management, and practice

Using a novel biologging approach to assess how different handling practices influence the post-release behaviour of Northern Pike across a wide range of body sizes

Influence of Landing Net Mesh Type on Handling Time and Tissue Damage of Angled Brook Trout

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