作者: Odd-Børre Humborstad , Michael Breen , Michael W Davis , Svein Løkkeborg , Anders Mangor-Jensen
DOI: 10.1016/J.FISHRES.2015.09.001
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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.