Muscle activity as a key indicator of welfare in farmed European sea bass (Dicentrarchus labrax L. 1758)

作者：Carbonara Pierluigi^*; Scolamacchia Maria; Spedicato Maria Teresa; Zupa Walter; McKinley Robert Scott; Lembo Giuseppe

来源：Aquaculture Research, 2015, 46(9): 2133-2146.

DOI：10.1111/are.12369

• Dicentrarchus labrax
• electromyogram
• fish telemetry
• haematology
• stocking density
• welfare

Groups of adult sea bass were reared at either low (10kgm(-3)) or high (50kgm(-3)) stocking densities respectively for 84 and 116days. To monitor the red muscle activity, about 20 fish from both densities were surgically implanted with EMG (Electromyograms) radio transmitters, after EMG calibration during exhaustive swimming exercise (U-crit test). Blood samples and morphometric measurements were also taken. EMG showed that the muscle activity of fish reared at 50kgm(-3) was on average twofold higher than fish kept at lower density. Cortisol was significantly more elevated at higher density and haemoglobin, haematocrit and RBCC (red blood cells count) showed the same trend, while lysozyme decreased. Patterns for glucose and lactate were less clear. The results showed that the contemporary use of functional (EMG) and physiological (haematological and biochemical) profiles could give a more comprehensive view of the fish status validating the diagnosis of fish stress induced by culture practices.

• 出版日期2015-9