The relationships between otolith score, a function of increasing stain visibility, and the ratio of alizarin complexone (mg) to fish biomass (g) for 0.1, 0.6 and 7 g black bream Acanthopagrus butcheri show that acceptable marks are produced in all size classes using a stain-to-biomass ratio of 3.3 mg g(-1) following an immersion period of 24 h.

The growing consumption of aquaculture products requires always new techniques to increase the production yield. Generally, the intensification of aquaculture practices is associated with a stress level rise of bred fishes. Sensitivity to stress, leading to disease, reduced growth and mortality, is higher in larvae than in adult fish. The stress induced effects can be reduced acting on opioid r...

1 Centerlor Marine Sciences-CCMAR, University of Algarve, Campus Gambelas. 8005139 Faro. Portugal. 2 Department of Molecular Biology and INDEGA, University of León. Campus Vegazana. 24071 León, Spain. 3 Institute of Marine Sciences of Andalusia-ICMAN, Spanish National Research Council, Av. Saharaui, 2, 11510 Puerto Real, Cádiz, Spain. * Corresponding author: E-mail: [email protected];e...

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In all teleost fishes vitellogenesis is triggered and maintained by oestradiol-17beta (E2) and is accompanied by an increase of blood plasma calcium and phosphate. The action of this hormone on calcium metabolism was investigated by treating fast-growing immature juvenile sea bream (Sparus aurata) with coconut butter implants alone (control) or implants containing 10 microg/g E2. Treatment with...

A series of investigations v^ere conducted in order to evaluate the effect of MOS supplementation in finfish aquaculture. Fish with great potential in aquaculture industry were tested with regards to effect of dietary MOS supplementation on intestinal histology and microbiology as well as overall animal health and production. Two levels of MOS supplementation were applied 0.2% and 0.4%. Experim...

This study investigated some aspects of stress research, including, also, the effects of chemical anaesthesia, in two important species for diversification in aquaculture, blackspot seabream, Pagellus bogaraveo and greater amberjack, Seriola dumerilii. The first part of the research (trial 1 and 2) was designed to determine the efficacy of clove oil as an anaesthetic alternative to MS-222. In t...

The aim of this study was to determine the impact of activated plastic films with thymol and enterocin AS-48 and high-hydrostatic pressure (HP) treatment on the bacterial load and bacterial diversity of vacuum-packaged sea bream fillets under refrigerated storage for 10 days. The activated film and the HP treatment reduced aerobic mesophiles viable counts by 1.46 and 2.36 log cycles, respective...

To shed light on the putative host-mediated lifestyle of the quintessential marine symbiont Aliivibrio fischeri, and on the symbiosis versus potentially pathogenic features of bacteria associated with farmed fish, we report the draft genome sequence of A. fischeri strain 5LC, a bacterium retrieved from gilthead sea bream (Sparus aurata) larvae.