Survival and recovery of longline- and pot-caught cod (Gadus morhua) for use in capture-based aquaculture (CBA)

作者: Odd-Børre Humborstad , Michael Breen , Michael W Davis , Svein Løkkeborg , Anders Mangor-Jensen

DOI: 10.1016/J.FISHRES.2015.09.001

关键词:

摘要: Abstract In capture-based aquaculture (CBA) wild cod (Gadus morhua) are caught and held in sea cages order to supply fresh, high-quality fish throughout the year. CBA of is attracting growing interest among Norwegian fishing industry. The most common gear for demersal seine net (Danish or Scottish seine). However, there powerful incentives increase extent CBA, but this will necessitate participation vessels from smaller coastal fleet that utilise commercial pot longline gear. legislation fish-welfare oriented stringent, documentation stress, injuries survival captured required new capture methods. Field experiments were performed determine condition at by pots, using a combination behavioural, physical, physiological reflex-based indicators. Mortality recovery recorded an onboard holding tank. No dead observed and, except hooking wounds, appeared unharmed. There was high prevalence incapable submerging (about 40%), which if not dealt with resulted mortality (proportion: 0.79; 95% CI: 0.62–0.89). capable lower pot-caught (0.09; 0.04–0.21) than longline-caught (0.39; 0.24–0.58) cod. Physiological reflex stress measurements indicated suffered less handling, suggests pots preferable as our knowledge temporal spatial variation suitability live storage (e.g. buoyancy status) currently insufficient predict potential outside experimental conditions. Reflex impairment could gears, inclusion status part reflex/buoyancy (RBI) score greatly improved model predictability. evidence relationship between RBI influenced suite stressors experienced fish, must be taken into careful consideration when comparing fisheries.

参考文章(38)
Dag M. Furevik, Odd-Børre Humborstad, Terje Jørgensen, Svein Løkkeborg, Floated fish pot eliminates bycatch of red king crab and maintains target catch of cod Fisheries Research. ,vol. 92, pp. 23- 27 ,(2008) , 10.1016/J.FISHRES.2007.12.017
Dag M. Furevik, Svein Løkkeborg, Fishing trials in Norway for torsk (Brosme brosme) and cod (Gadus morhua) using baited commercial pots Fisheries Research. ,vol. 19, pp. 219- 229 ,(1994) , 10.1016/0165-7836(94)90040-X
G. P. Arnold, M. G. Walker, Vertical movements of cod (Gadus morhua L.) in the open sea and the hydrostatic function of the swimbladder Ices Journal of Marine Science. ,vol. 49, pp. 357- 372 ,(1992) , 10.1093/ICESJMS/49.3.357
Svein Løkkeborg, Åsmund Bjordal, Anders Fernö, Responses of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) to baited hooks in the natural environment Canadian Journal of Fisheries and Aquatic Sciences. ,vol. 46, pp. 1478- 1483 ,(1989) , 10.1139/F89-189
J. R. BOTTA, G. BONNELL, B. E. SQUIRES, Effect of Method of Catching and Time of Season on Sensory Quality of Fresh Raw Atlantic Cod (Gadus Morhua) Journal of Food Science. ,vol. 52, pp. 928- 931 ,(1987) , 10.1111/J.1365-2621.1987.TB14245.X
Espen Strand, Christian Jørgensen, Geir Huse, Modelling buoyancy regulation in fishes with swimbladders: bioenergetics and behaviour Ecological Modelling. ,vol. 185, pp. 309- 327 ,(2005) , 10.1016/J.ECOLMODEL.2004.12.013
L. J. Stoot, N. A. Cairns, F. Cull, J. J. Taylor, J. D. Jeffrey, F. Morin, J. W. Mandelman, T. D. Clark, S. J. Cooke, Use of portable blood physiology point-of-care devices for basic and applied research on vertebrates: a review Conservation Physiology. ,vol. 2, pp. 1- 21 ,(2014) , 10.1093/CONPHYS/COU011
Espen Strand, Geir Huse, Vertical migration in adult Atlantic cod (Gadus morhua) Canadian Journal of Fisheries and Aquatic Sciences. ,vol. 64, pp. 1747- 1760 ,(2007) , 10.1139/F07-135