Exploitation of specialised fisheries resources: The importance of hook size in recreational angling for large common carp (Cyprinus carpio L.)

Rapp, Tobias; Cooke, Steven J.; Arlinghaus, Robert

doi:10.1016/j.fishres.2008.06.019

Cited by 38 publications

(53 citation statements)

References 28 publications

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“…Results indicated that: (i) 0+ C. carpio increased nitrogen (but not phosphorus) and phytoplankton whilst partly suppressing large zooplankton (Cladocera) and enhancing small zooplankton (nauplii) through nutrient release by trophic cascade effects (Qin and Threlkeld 1990); (ii) at stocking densities similar to biomass levels found in reservoirs of central United States, 0+ C. carpio increased phosphorus and phytoplankton, reduced densities of benthic invertebrates and altered zooplankton community structure (Richardson et al 1990); and (iii) 0+ C. carpio increased sediment re-suspension from benthivorous feeding leading in turn to increased levels of turbidity and nitrogen (but not phosphorus) and reducing zooplankton and benthic invertebrate abundance (Cline et al 1994). Overall, findings from these experiments suggested that at high biomass 0+ C. carpio can significantly alter the abiotic and biotic components of shallow water columns.…”

Section: Tanksmentioning

confidence: 89%

“…Western Europe and Thrace/Anatolia in Turkey), the species status is being re-assessed due to increasing awareness of the potential risks posed to the native biota (Almeida et al, 2013;Tarkan et al, 2014;Copp et al, 2015), despite the species being highly prized for sports fish (e.g. Arlinghaus and Mehner 2003;Hickley and Chare 2004;Rapp et al 2008), representing a valuable and productive fishery (e.g. Shumka et al 2008;Mrdak 2009;Harlioğlu 2011), traditional ethnic food fish (Balon 1974).…”

Section: Introductionmentioning

confidence: 99%

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Sazanın (Cyprinus carpio L., 1758) Tatlısu Ekosistemlerine Etkileri İçin Deneysel Kanıt: Türkiye İç Suları İçin Yönetim Yönlendirmeleri Derlemesi

Vilizzi¹,

Tarkan²

2015

Journal of Limnology and Freshwater Fisheries Research

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Section: Tanksmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Sazanın (Cyprinus carpio L., 1758) Tatlısu Ekosistemlerine Etkileri İçin Deneysel Kanıt: Türkiye İç Suları İçin Yönetim Yönlendirmeleri Derlemesi

Vilizzi¹,

Tarkan²

2015

Journal of Limnology and Freshwater Fisheries Research

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“…Indeed, while controlling for lure size and type, we found release-rigged lures 320 fished with smaller hook sizes to increase landing rates and reduce injury compared to normal-321 rigs with larger hooks. Similarly, Rapp et al (2008) showed that a reduction in hook sizes when 322 bottom fishing with natural bait (corn) not only increased landing and catch rates but also size 323 of carp, suggesting that the smaller hook size improved retention on the gear. In the study of 324 Rapp et al (2008), the improved landing and catch rates with the smaller hooks was not 325 explained by better penetration and hook hold, which we prefer as explanations (see video and 326 Fig.…”

mentioning

confidence: 98%

“…Similarly, Rapp et al (2008) showed that a reduction in hook sizes when 322 bottom fishing with natural bait (corn) not only increased landing and catch rates but also size 323 of carp, suggesting that the smaller hook size improved retention on the gear. In the study of 324 Rapp et al (2008), the improved landing and catch rates with the smaller hooks was not 325 explained by better penetration and hook hold, which we prefer as explanations (see video and 326 Fig. 3), but by the specific feeding pattern of the carp sucking in the bait from the bottom.…”

mentioning

confidence: 98%

“…It 108 was assumed that the combined effect of two modifications of a traditional rig in lure angling 109 for pike would enable the angler to exploit the full potential of small hooks in terms of better 110 penetration and hook hold while inducing less damage to the fish (Rapp et al 2008). We used 111 observational data to test this hypothesis and consider the present study a proof-of-concept 112 suggestive of the documented effects.…”

mentioning

confidence: 99%

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Citizen science data suggest that a novel rig improves landing rate and reduces injury and handling time in recreational angling with artificial lures in Baltic pike (Esox lucius)

Bursell¹,

Arlinghaus

2018

Preprint

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The optimal terminal gear in hook-and-line recreational fishing maximizes landing rates and minimizes injury to the fish because some fish will be released after capture. We designed a novel rig configuration in artificial lure fishing for top predators and examined its effectiveness in angling for Baltic northern pike (Esox lucius ) using a citizen science approach based on observational data collected from volunteer anglers in the field. The novel rig included two changes to traditional rig designs common to artificial lure angling.First, hooks were mounted in a way giving better hook exposure and eliminating lever-arm effects from the lure to the hooks once a fish is hooked. This construction allowed the second change, being a shift to hooks 4-5 sizes smaller than those used on traditional hook mounts. We analysed observational data collected by volunteer anglers using either the novel rig or a standard rig mount in two types of artificial lures (softbait and hardbait) of the same size (about 17 cm). Using N = 768 pike contacts as input data, we showed the landing rates of pike targeted with artificial lures significantly and substantially increased from 45 % with normal-rigs to 85 % when the same lure types were fished with the novel rig configuration. Lure type and water temperature had no effects on landing rates.Moreover, hardbaits on normal-rigs produced significantly more injury, bleeding and elevated unhooking time compared to fish captured on hardbaits with release-rigs. We conclude that simple changes to traditional hook sizes and mounts in lure fishing may benefit both anglers and the fishes that are to be released and that citizen science projects with volunteer anglers are able to provide good data in proof-of-concept studies. The optimal terminal gear in hook-and-line recreational fishing maximizes landing rates and 22 minimizes injury to the fish because some fish will be released after capture. We designed a 23 novel rig configuration in artificial lure fishing for top predators and examined its effectiveness 24 in angling for Baltic northern pike (Esox lucius) using a citizen science approach based on 25 observational data collected from volunteer anglers in the field. The novel rig included two 26 changes to traditional rig designs common to artificial lure angling. First, hooks were mounted 27 in a way giving better hook exposure and eliminating lever-arm effects from the lure to the 28 hooks once a fish is hooked. This construction allowed the second change, being a shift to 29 hooks 4-5 sizes smaller than those used on traditional hook mounts. We analysed observational 30 data collected by volunteer anglers using either the novel rig or a standard rig mount in two 31 types of artificial lures (softbait and hardbait) of the same size (about 17 cm). Using N = 768 32 pike contacts as input data, we showed the landing rates of pike targeted with artificial lures 33 significantly and substantially increased from 45 % with normal-rigs to 85 % when the same lure 34 types were fished with the nove...

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The Postrelease Survival of Walleyes Following Ice‐Angling on Lake Nipissing, Ontario

Twardek

Lennox

Lawrence

et al. 2018

N American J Fish Manag

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Natural resource agencies have developed catch-and-release regulations for Walleyes Sander vitreus of prohibited size and number to reduce mortality in many recreational fisheries. The efficacy of such regulations is contingent upon the released fish surviving, but survival data on Walleyes captured by ice-angling are lacking. We estimated the survival of Lake Nipissing (Ontario, Canada) Walleyes that were captured by both active and passive ice-angling methods using a variety of hook types and lures baited with Emerald Shiners Notropis atherinoides. We also assessed the role of de-hooking methods on the survival of deeply hooked Walleyes. After the angling event, Walleyes (n = 260) were held for 24 h in a submerged holding pen to estimate postrelease survival. Average mortality after the 24-h holding period was 6.9%. Fewer Walleyes captured by active angling were deeply hooked (9.3%) than passively caught fish (50.4%), and deeply hooked Walleyes were observed to have more frequent postrelease mortality (14.8%) than shallow-hooked Walleyes (3.0%). There was no significant difference in mortality rates of Walleyes caught by passive angling (9.8%) or active angling (2.8%); mortality rates of fish caught on circle hooks (6.1%), J-hooks (8.2%), and treble hooks (5.6%) also did not differ. Neither air temperature nor the presence of barotrauma had a significant effect on mortality of captured Walleyes. Survival did not significantly differ between deeply hooked fish that had the line cut (11.1%) and those that had the hook removed (22.6%). Results from this study suggest a relatively high incidence of Walleye survival after catch-and-release angling through the ice.

show abstract

Exploitation of specialised fisheries resources: The importance of hook size in recreational angling for large common carp (Cyprinus carpio L.)

Cited by 38 publications

References 28 publications

Sazanın (Cyprinus carpio L., 1758) Tatlısu Ekosistemlerine Etkileri İçin Deneysel Kanıt: Türkiye İç Suları İçin Yönetim Yönlendirmeleri Derlemesi

Sazanın (Cyprinus carpio L., 1758) Tatlısu Ekosistemlerine Etkileri İçin Deneysel Kanıt: Türkiye İç Suları İçin Yönetim Yönlendirmeleri Derlemesi

Citizen science data suggest that a novel rig improves landing rate and reduces injury and handling time in recreational angling with artificial lures in Baltic pike (Esox lucius)

The Postrelease Survival of Walleyes Following Ice‐Angling on Lake Nipissing, Ontario

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