Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl
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An active stimulating device, such as a fluttering net or canvas attached to the end of a cod end generating a shaking motion, could help to encourage the escape of juvenile fish positioned passively near the net. Field fishing trials using a shrimp beam trawl were carried out to examine the effect on the reduction of juvenile fish or other discard catch by generating a shaking movement of the cod end using an unbiased cap-like round canvas. The mean period of the shaking motion with the round canvas was ~14 s, and the mean amplitude was 0.4 m as measured by peak event analysis and the global wavelet method. The bycatch of juvenile fish in 14 trials decreased by ~30% and by ~25% using a steady cod end for the total bycatch using a shaking cod end in the shrimp beam trawl, while the marketing catch was similar between steady and shaking cod ends. There was no difference in the body size of the shrimp or fish and species composition between the steady and shaking cod ends. Above results demonstrate a new method for bycatch reduction using an active stimulating device, although more detailed studies are needed.
Abstract
An active stimulating device, such as a fluttering net or canvas attached to the end of a cod end generating a shaking motion, could help to encourage the escape of juvenile fish positioned passively near the net. Field fishing trials using a shrimp beam trawl were carried out to examine the effect on the reduction of juvenile fish or other discard catch by generating a shaking movement of the cod end using an unbiased cap-like round canvas. The mean period of the shaking motion with the round canvas was ~14 s, and the mean amplitude was 0.4 m as measured by peak event analysis and the global wavelet method. The bycatch of juvenile fish in 14 trials decreased by ~30% and by ~25% using a steady cod end for the total bycatch using a shaking cod end in the shrimp beam trawl, while the marketing catch was similar between steady and shaking cod ends. There was no difference in the body size of the shrimp or fish and species composition between the steady and shaking cod ends. Above results demonstrate a new method for bycatch reduction using an active stimulating device, although more detailed studies are needed.
참고문헌 (29)
- 조삼광, "거제연안 새우조망 조업구역과 비 조업구역에서의 어획물 특성", 한국어업기술학회지, 49(4), pp.377~384 (2013), 한국어업기술학회[DOI]
- The development of international guidelines on bycatch management and reduction of discards, "Chopin F", ICES, ~, pp.ICES CM 2009 (2009), M:01
- Deval MC, "Selectivity of PE and PA material codends for rose shrimp(Parapenaus longirostris)in Turkish twin rigged beam trawl fishery", Fish Res, 81, pp.72~79 (2006)[DOI]
- He P, "A new shrimp trawl combination grid system that reduces small shrimp and finfish bycatch", Fish Res, 140, pp.20~27 (2013)[DOI]
- He P, "Rope Grid: A new grid design to further reduce finfish bycatch in the Gulf ofMaine pink shrimp fishery", Fish Res, 111, pp.100~107 (2011)[DOI]
- Ingólfsson ÓA., "The effect of forced mesh opening in the upper panel of a Nephrops trawl on size selection of Nephrops, haddock and whiting", Fish Res, (108), pp.218~222 (2011)[DOI]
- 장충식, "한국 연안해역 새우 조망어업의 어획량 분석", 한국어업기술학회지, 45(1), pp.1~13 (2009), 한국어업기술학회
- Development of the selective fishing gear in shrimp beam trawl fishery. Final report to the Ministry of Maritime and Fisheries, "Jang CS", Ministry of Maritime and Fisheries, 91~ (2006)
- 김용해, "Effects on the Escapement of Juvenile Bastard Halibut Paralichthys olivaceus of Actively Stimulating Devices Inside a Model Cod End", Fisheries and Aquatic Sciences, 14(1), pp.62~69 (2011), 한국수산과학회
- Kim YH, "Analysis of turbulence and tilt by in-situ measurements inside the codend of a shrimp beam trawl", Ocean Eng, 53, pp.6~15 (2012)[DOI]
- 김용해, "Fluttering Characteristics of the Ropes and Nets as an Active Stimulating Device inside the Cod End of a Trawl Net", Fisheries and Aquatic Sciences, 16(2), pp.101~108 (2013), 한국수산과학회
- 김용해, "Shaking Motion Characteristics of a Cod-end Caused by an Attached Circular Canvas during Tank Experiments and Sea Trials", Fisheries and Aquatic Sciences, 16(3), pp.211~220 (2013), 한국수산과학회[DOI]
- 김용해, "Comparison of Tilt Variation in the Otter Board and Codend of Bottom Trawl Gear during Fishing Operations", Fisheries and Aquatic Sciences, 17(1), pp.145~153 (2014), 한국수산과학회[DOI]
- Kim YH, "Escape response of juvenile fish by the shaking of a codend using a cap-like canvas in tank experiments" (2015), Fish Res
- Kim YH, "Herding and escaping responses of juvenile roundfish to square mesh window in a trawl cod end", Fish Sci, 74, pp.1~7 (2008)
- Kim YH, "An actively stimulating net panel and rope array inside a model cod-end to increase juvenile red seabreamescapement", Fish Res, 106, pp.71~75 (2010)[DOI]
- Matsushita Y, "Bycatch reduction technologies for towed fishing gears", Nippon Suisan Gakkaishi, 66, pp.261~268 (2000)
- Narasimha R, "Turbulent flux events in a nearly neutral atmospheric boundary layer", Phil Trans R Soc A, 365, pp.841~858 (2007)
- Nunoo FKE, "When trash fish is treasure: The case of Ghana in West Africa", Fish Res, 96, pp.167~172 (2009)[DOI]
- 오철웅, "완도 해역의 새우조망어업에서 발생한 부수어획물의 계절적 변동", 한국수산과학회지, 43(1), pp.69~77 (2010), 한국수산과학회
- 오택윤, "한국 거문도 주변 새우조망에 어획된 새우류의 종조성과 계절변동", 한국어업기술학회지, 39(1), pp.63~76 (2003), 한국어업기술학회
- 박준, "태안 바다목장 해역에서 새우조망에 어획된 수산생물의 종조성 및 군집구조", 한국어업기술학회지, 49(3), pp.238~249 (2013), 한국어업기술학회[DOI]
- 박중연, "2007-2009년 매물도에서 새우조망에 의한 어류 종조성의 연변동", 한국수산과학회지, 46(5), pp.619~625 (2013), 한국수산과학회[DOI]
- Ryer CH, "A review of flatfish behavior relative to trawls", Fish Res, 90, pp.138~146 (2008)[DOI]
- Sea Grant, "Fisheries Bycatch- Global issues and creative solutions", 29th LowellWakerfield fisheries symposium, pp.106~ (2014)
- 서영일, "남해도 주변 해역에서 새우조망으로 조사한 수산자원의 분포 및 계절 변화", 수산해양기술연구, 49(4), pp.419~431 (2013), 한국수산해양기술학회[DOI]
- 송미영, "진해만과 진주만에서 새우조망으로 어획된 수산자원의 계절변동", 한국어업기술학회지, 48(4), pp.428~444 (2012), 한국어업기술학회[DOI]
- Torrence C, "A practical guide to wavelet analysis", Bull Am Meteorol Soc, 79, pp.61~78 (1998)
- Wardle CS, "Fish behaviour and fishing gear. In: Behaviour of Teleost Fishes", pp.609~644 (1993), Chapman & Hall