우리나라 다랑어연승어업에 있어서 환형낚시와 재래식낚시를 사용하여 목표종의 어획률을 결정하는 요인 분석
Determination factors for catch rate of the target species between circle hook and straight shank hook in the Korean tuna longline fishery
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
We conducted experiments to compare the catch rate of bigeye tuna and yellowfin tuna between circle hooks and straight shank hook in the Korean tuna longline fishery at the eastern and central Pacific Ocean from 2005to 2007. We analyzed difference of fork length, survival and hooking location between a circle hook and a straight shank hook for both tunas, respectively. There was no difference in the mean fork length size of yellowfin tuna caught on the two type of hook but bigeye tuna was significant. In case of survival, there was no difference between two hook type, but the difference of hooking location was significant for both species. We also analyzed to find determinants of both tunas catch rate using generalized linear models (GLMs) which were used latitude, longitude, year, month, depth, hook type, bait type and so on as independent variables. Spatial factors, latitude and longitude, and temporal factors, year and month, affected catch rate of bigeye tuna and yellowfin tuna. And also, depth such as a marine environment factor was influenced on catch rate.
Abstract
We conducted experiments to compare the catch rate of bigeye tuna and yellowfin tuna between circle hooks and straight shank hook in the Korean tuna longline fishery at the eastern and central Pacific Ocean from 2005to 2007. We analyzed difference of fork length, survival and hooking location between a circle hook and a straight shank hook for both tunas, respectively. There was no difference in the mean fork length size of yellowfin tuna caught on the two type of hook but bigeye tuna was significant. In case of survival, there was no difference between two hook type, but the difference of hooking location was significant for both species. We also analyzed to find determinants of both tunas catch rate using generalized linear models (GLMs) which were used latitude, longitude, year, month, depth, hook type, bait type and so on as independent variables. Spatial factors, latitude and longitude, and temporal factors, year and month, affected catch rate of bigeye tuna and yellowfin tuna. And also, depth such as a marine environment factor was influenced on catch rate.
참고문헌 (24)
- Akaike, H., "Prediction and entropy. In: A Celebration of Statistics", pp.1~24 (1985), Atkinson, A.C. and S.E. Feinberg, des. Springer-Verlag
- Baum, J.K, "Collapse and conservation of shark populations in the northwest Atlantic", Science, 299, pp.389~392 (2003)
- Developments (2006－2007) in scientific research on the use of modified fishing gear to reduce longline bycatch of sea turtles, "Boggs, C.H", WCPFC-SC3-EB SWG, 2007, pp.10~
- Cooke, S.J, "Are circle hooks an effective tool for conserving marine and freshwater recreational catch-and-release fisheries", Aquat. Conserv.: Mar. Freshw. Ecosyst, 14, pp.299~326 (2004)
- Cox, A, "Quota allocation in international fisheries. OECD Food, Agriculture and Fisheries Working Papers", OECD Publishing, 60~ (2009)
- Turtle bycatch mitigation in the Hawaiian longline fishery, "Dalzell, P", WCPFC-SC2-2006, 2006, pp.8~
- Falterman, B, "A preliminary comparison of the relative mortality and hooking efficiency of circle and straight shank ( “J”) hooks used in the pelagic longline industry", Am. Fish. Soc. Symp, 30, pp.80~87 (2002)
- Report of the Expert Consultation on Interactions between Sea Turtles and Fisheries within an Ecosystem Context, "FAO", FAO Fisheries Report, 38~, pp.No. 738 (2004)
- Report of the Technical Consultation on Sea Turtles Conservation and Fisheries, "FAO", FAO Fisheries Report, 31~, pp.No. 765 (2005)
- Sea turtle interactions in the Hawaii-based longline swordfish fishery: First quarter 2007 and comparison to previous periods, "Gilmand, E", Western Pacific Regional Fishery Management Council, ~ (2008)
- Gilman, E., "Reducing sea turtle interactions in the Hawaii-based longline swordfish fishery", Biol. Conserv, 139, pp.19~28 (2007)
- Guisan, A., "Generalized linear and generalized additive models in studies of species distributions: setting the scene", Ecol. modell, 157, pp.89~100 (2002)
- Hoey, J.J, "Bycatch in Western Atlantic pelagic longline fisheries, in: Solving Bycatch: Considerations for Today And Tomorrow", Alaska Sea Grant College Program, 193~203 (1996)
- Multi-species catch characteristics for the US Atlantic pelagic longline fishery. Captain′s Report, "Hoey, J.J", National Marine Fisheries-NOAA-NMFS, 1~78, pp.Marfin Grant-NA77FF- 0543, (SK) Grant-NA86FD0113 (1999)
- Kerstetter, D.W, "Effects of circle versus J-style hooks on target ad non-target species in a pelagic longline fishery", Fish. Res, 80, pp.239~250 (2006)
- 김순송, "Effects of Hook and Bait Types on Bigeye Tuna Catch Rates in the Tuna Longline Fishery", 한국어류학회지, 20(2), pp.105~111 (2008), 한국어류학회
- Effect of circle hooks and feasibility of de-hooking devices to reduce incidental mortality of sea turtles in the Japanese longline fishery, "Minami, H", 9~, pp.WCPFC (2006), SC[DOI]
- Ward, P, "Shifts in open-ocean fish communities coinciding with the commencement of commercial fishing", Ecology, 86(4), pp.835~847 (2005)
- Ward, P, "An overview of historical changes in the fishing gear and practices of pelagic longliners, with particular reference to Japan′s Pacific fleet", Rev. Fish Biol. Fish, pp.501~516 (2007)
- Ward, P., "The effects of circle hooks on bycatch and target catches in Australia′s pelagic longline fishery", Fish. Res, 97, pp.253~262 (2009)
- Watson, J.W, "Pelagic longline fishing gear: a brief history and review of research efforts to improve selectivity", Mar. Technol. Soc. J, 40, pp.6~11 (2006)
- Experiments in the Atlantic northeast distant waters to evaluate sea turtle mitigation measures in the pelagic longline fishery. Report on experiments conducted in 2001 and 2002, "Watson, JW", NOAA Fisheries, 89~ (2003)
- Watson, J.W., "Fishing methods to reduce sea turtle mortality associated with pelagic longlines", Can. J. Fish. Aquat. Sci, 62, pp.965~981 (2005)
- Yokota, K., "Shark catch in a pelagic longline fishery: Comparison of circle and tuna hooks", Fish. Res, 81, pp.337~341 (2006)