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Sant Carles de la Ràpita, Spain

Boglione C.,University of Rome Tor Vergata | Gisbert E.,IRTA SCR | Gavaia P.,University of Algarve | Witten P.E.,Ghent University | And 3 more authors.
Reviews in Aquaculture

The presence of skeletal anomalies in farmed teleost fish is currently a major problem in aquaculture, entailing economical, biological and ethical issues. The common occurrence of skeletal abnormalities in farmed fish and the absence of effective solutions for avoiding their onset or definitely culling out the affected individuals as early as possible from the productive cycle, highlight the need to improve our knowledge on the basic processes regulating fish skeletogenesis and skeletal tissues differentiation, modelling and remodelling. Severe skeletal anomalies may actually occur throughout the entire life cycle of fish, but their development often begins with slight aberrations of the internal elements. Comprehensive investigation efforts conducted on reared larvae and juveniles could provide a great contribution in filling the gap in knowledge, as skeletogenesis and skeletal tissue differentiation occur during these early life stages. The aim of this review is to provide a synthetic but comprehensive picture of the actual knowledge on the ontogeny, typologies and occurrence of skeletal anomalies, and on the proposed causative factors for their onset in larvae and juveniles of European farmed fish. The state-of-art of knowledge of these issues is analysed critically intending to individualize the main gaps of knowledge that require to be filled, in order to optimize the morphological quality of farmed juveniles. © 2013 Wiley Publishing Asia Pty Ltd. Source

Boglione C.,University of Rome Tor Vergata | Gavaia P.,University of Algarve | Koumoundouros G.,University of Crete | Gisbert E.,IRTA SCR | And 3 more authors.
Reviews in Aquaculture

This critical review summarizes the knowledge about fish skeletal tissues and inherent normal and anomalous development. Particular emphasis is given to existing literature on reared European fishes. The aim was to identify the main gaps of knowledge that require to be filled, in order to precociously identify anomalous developmental patterns that lead to skeletal anomalies in reared finfish larvae and juveniles. The review also aims to extend our knowledge about the factors that are possibly involved in the onset of skeletal anomalies. The final goal is the optimization of the morphological quality of farmed juvenile fish. © 2013 Wiley Publishing Asia Pty Ltd. Source

Suffredini E.,Istituto Superiore di Sanita | Lopez-Joven C.,IRTA SCR | Lopez-Joven C.,University of Zaragoza | Maddalena L.,Istituto Superiore di Sanita | And 2 more authors.
Applied and Environmental Microbiology

The present study used pulsed-field gel electrophoresis (PFGE) characterization to examine the intraspecies variability and genetic relationships among environmental isolates of Vibrio parahaemolyticus from different European countries. This is first study performed on environmental V. parahaemolyticus that included more than one European country. © 2011, American Society for Microbiology. Source

Boglino A.,IRTA SCR | Darias M.J.,IRD Montpellier | Andree K.B.,IRTA SCR | Estevez A.,IRTA SCR | Gisbert E.,IRTA SCR
Journal of Applied Ichthyology

Flatfish can provide a reliable model to study developmental disorders in bone tissues occurring during morphogenesis in response to nutritional imbalances. To date, most studies dealing with the effect of dietary essential fatty acids (EFA) on skeletogenesis in fish have focused their investigation on the role of docohexanoic (22:6n-3, DHA) and eicosapentaenoic (20:5n-3, EPA) acids, but only a few have focused on investigating the effects of arachidonic acid (20:4n-6, ARA) on bone during fish larval development. Bone development and composition at larval stage have been demonstrated to be highly sensitive to dietary levels of EFA, in particular the EPA and ARA acids, both precursors for highly bioactive eicosanoids presenting opposite effects on bone metabolism. Since fish are not able to synthesize EFA, they need to obtain them from the diet. However, dietary imbalances in EPA and ARA in flatfish larvae may disrupt bone formation and osteoblast differentiation in skeletal tissues, leading to the incidence of skeletal deformities, reduced mineralization and problems of bone remodelling in the cranial region associated with impaired eye migration. These anomalies in skeletal structures are one of the most important factors that affect flatfish larval quality and hamper their production. Thus, we have reviewed the current state of knowledge about the effects of dietary ARA contents on skeletogenesis in Senegalese sole (Solea senegalensis), one of the main flatfish species cultured in Europe. Their larval quality still suffers for a high incidence of skeletal anomalies induced by dietary imbalances during metamorphosis. © 2014 Blackwell Verlag GmbH. Source

Padros F.,Autonomous University of Barcelona | Villalta M.,IRTA SCR | Gisbert E.,IRTA SCR | Estevez A.,IRTA SCR
Journal of Fish Biology

This study provides a comprehensive description of the main morphological and histological events that take place during larval and post-larval development of Senegal sole Solea senegalensis in order to establish a reference for its normal developmental organogenesis. Five stages have been described. Before gill development at the onset of metamorphosis (eye migration process, stage 4c), the skin was the main site of gas and ion exchange, whereas during stages 3 and 4, the skin begins differentiating into the definitive juvenile structure. The timing of development of the endocrine system depends on each organ, the endocrine pancreas and thyroid gland being the first to differentiate (stages 2 and 3, respectively), followed by the interrenal tissue and stannius corpuscles that develop at metamorphosis (stages 4 and 4c, respectively). The differentiation and maturation of the lymphohaematopoietic organs was coupled with the increase in complexity of the cardiovascular system and the presence of mature erythrocytes (stage 4b), which might be attributed to the change in respiration and the development of fully functional gills. In the differentiation of sensory structures, the development of eyes, inner ear, neuromasts and olfactory organs was rapid, with most of these organs becoming fully developed soon after hatching (stage 1). Vision, chemo- and mechano-reception developed very early in ontogeny, in parallel with the development of the central nervous system and changes in feeding habits. Although the general pattern of development in S. senegalensis appeared similar to most marine fish larvae already described, there were species-specific ontogenetic characteristics probably derived from the species' particular environment (subtropical waters) and behaviour (nocturnal, benthic, omnivorous feeding habits). These results on the organogenesis of larvae are a useful tool for establishing the functional systemic capabilities and physiological requirements of larvae to ensure optimal welfare and growth under aquaculture conditions. © 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles. Source

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