Evaluation of observer‐ and industry‐based catch data in a recreational charter fishery

Gray, Charles A.; Kennelly, Steven J.

doi:10.1111/fme.12210

Cited by 11 publications

(12 citation statements)

References 40 publications

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“…Lewin, Arlinghaus & Mehner, ; West et al., ; Wise, Telfer, Lai, Hall & Jackson, ). This study, along with that reported in Gray and Kennelly (), demonstrates how observer‐based sampling can provide independent catch (retained and discarded), effort and demographic data on key species in a recreational fishery. The ongoing collection of such data could contribute to species, fisheries and ecosystem assessments and ultimately the management of resilient and sustainable recreational charter fisheries.…”

Section: Discussionsupporting

confidence: 66%

“…Fletcher, ; Hobday et al., ). This study and that reported in Gray and Kennelly () have provided important insights into designing and implementing any ongoing programs to independently monitor, evaluate and report on, charter fisheries and stocks of recreational fish species.…”

Section: Discussionmentioning

confidence: 60%

“…This line fishing sector could therefore provide a relatively consistent platform to collect long‐term fishery and species demographic data for inclusion in stock assessments. Current catch and species monitoring is limited, however, to industry‐reported logbooks, which can be problematic due to under‐reporting of fishing effort, total catches and species, and lack of discard information (Gray & Kennelly, ; McIlgorm & Pepperell, ). This study used an onboard scientific observer programme to obtain independent quantitative data on variation in fishery attributes, the rates of retained and discarded catches, and the length compositions of key species across the line fishery.…”

Section: Introductionmentioning

confidence: 99%

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Recreational charter fishery attributes and variation in key species catches and discards: Resource management considerations

Gray¹,

Kennelly

2017

Fisheries Management Eco

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Strategic long‐term sampling programmes that deliver recreational catch, effort and species demographic data are required for the effective assessment and management of recreational fisheries and harvested organisms. This study used a spatially and temporally stratified observer programme to examine variation in the rates, quantities and lengths of retained and discarded catches of key species in a recreational charter fishery. Geographic region, but not season, significantly influenced catch rates of key demersal species, being driven by temporally persistent latitudinal clines in environmental conditions influencing species distributions. There was considerable trip‐to‐trip variation in catch rates that were attributed to localised differences in fishing operations, locations, environmental conditions and client preferences. Broad trends in retained and discarded catch rates were nevertheless, similar across different fishing effort standardisations (per‐trip, per‐hour, per‐client, per‐client/fished hour), demonstrating that the coarsest unit of effort could be used in fishery assessments. Discard rates of organisms were variable and driven by a combination of mandated legal lengths, individual client and operator preferences for particular species and sizes of organisms, and not due to attainment of catch quotas or high‐grading. This study has identified important fishery attributes that require consideration in assessing charter fisheries and stocks of recreational fish species.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

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Recreational charter fishery attributes and variation in key species catches and discards: Resource management considerations

Gray¹,

Kennelly

2017

Fisheries Management Eco

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“…). In many cases, modes of capture are relatively indiscriminate, with fishing gears such as hook and line and nets capturing a wide range of species in the same location (Gray and Kennelly ; Northridge et al. ).…”

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confidence: 99%

Consequences of Fishery Gear Type and Handling Practices on Capture and Release of Wild Steelhead on the Bulkley River

Twardek

Elmer

Beere

et al. 2019

N American J Fish Manag

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Steelhead Oncorhynchus mykiss are captured and released during spawning migrations by the commercial, subsistence (Indigenous), and recreational fishing sectors, though the consequences of these fisheries interactions on steelhead migration are poorly understood. This study evaluated injury, reflex impairment, behavior, and survival of released wild adult steelhead following capture in the subsistence dip-net, subsistence beach-seine, and recreational angling fisheries of the Bulkley River, British Columbia. Wild steelhead were captured using common handling practices employed in each fishery and were monitored postrelease using radiotelemetry. A greater proportion of steelhead captured by dip net and seine had impaired righting reflexes compared with angled fish, but only fish captured by dip net had notably higher incidence of injury (i.e., net marks, torn fins, flesh wounds, scale loss). Fish captured by dip and seine net had considerably faster peak migration rates (>4,000 m/d) than angled fish (<1,000 m/d), which likely reflects when the steelhead are encountered during their migration in these fisheries (earlier versus later stages). Air exposure (15-74 s) and water temperature (9.2-15.1°C) at the time of capture had significant negative relationships with 24-h fallback behavior (temperature only), intermediate-term (10-20 d after capture) migration rates, and peak migration rates in dip-net-captured steelhead. There were no significant effects of capture duration or fish length on injury, righting reflexes, or migratory behavior. Immediate mortality upon release was rare and occurred in only one fish captured by dip net. The 3-d survival was 88-97% for dip-net-caught steelhead, 96-100% for seine-caught steelhead, and 68-100% for angled steelhead. Despite inherent differences in timing and location between these fisheries, findings suggest that air exposure and water temperature can decrease steelhead migration rates. Fishers should look for opportunities to avoid or minimize these capture and handling conditions when releasing steelhead.

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“…Fisheries are often a complex blend of motivations and human-fish interactions (Cooke and Cowx 2006;Young et al, 2016). In many cases, modes of capture are relatively indiscriminate, with fishing gears such as hook-and-line and nets, being able to capture a wide range of species in the same location (Gray and Kennelly, 2017;Northridge et al, 2017). Many fish are released to comply with harvest restrictions, or as a voluntary behaviour on behalf of the fisher for conservation purposes or because the bycatch is considered low value to the fisher (Arlinghaus et al, 2007;Davies et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Natural and Anthropogenic Factors Influencing the Pre-Spawn Migration of Steelhead Trout

Twardek¹

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Migration can result in considerable exposure to both natural and anthropogenic stressors that can impact the ability of an anadromous fish to complete this critical component of their life-history. In this thesis I use a range of physiological and behavioural measures to evaluate natural and anthropogenic factors influencing the migration of wild adult migrating steelhead in the Bulkley River, British Columbia, including pathogens and fisheries captures. Steelhead appeared to be relatively resilient to pathogens and capture within fisheries, though I observed changes to their physiology, I am extremely grateful to have worked under the supervision of Dr. Steven J. Cooke and Dr. Andy J. Danylchuk over the last couple of years. I met Steve in 2015 when I took on a summer position in his lab during the last year of my undergraduate degree at Queen's University and was fortunate enough to be asked by Steve to complete a graduate degree in his lab. These last two years have been a truly valuable experience for me, as Steve has without-fail, provided me with every opportunity possible to develop and learn. My cosupervisor Andy was responsible for setting up these amazing projects in Smithers, British Columbia and taught me the importance of engaging stakeholders during the completion of a project. I am thankful for the efforts of my thesis committee members; Dr. Gabriel Blouin-Demers, and Dr. Michael Donaldson, who provided direction for my thesis as I came into the closing stages. I am thankful for all of the field support provided by Laura Elmer and Tyler Gagne. This work benefited immensely from the help of countless volunteers, but special mention must be given to

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Evaluation of observer‐ and industry‐based catch data in a recreational charter fishery

Cited by 11 publications

References 40 publications

Recreational charter fishery attributes and variation in key species catches and discards: Resource management considerations

Recreational charter fishery attributes and variation in key species catches and discards: Resource management considerations

Consequences of Fishery Gear Type and Handling Practices on Capture and Release of Wild Steelhead on the Bulkley River

Natural and Anthropogenic Factors Influencing the Pre-Spawn Migration of Steelhead Trout

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