Vincent C.,ACRI ST |
Mangin A.,ACRI ST |
Bryere P.,ACRI ST |
Serra R.,ACRI ST |
And 23 more authors.
European Space Agency, (Special Publication) ESA SP | Year: 2016
The EU-FP7 funded project SAFI ("Supporting our Aquaculture and Fisheries Industries", www.safiservices.eu) is primary focused on the exploitation of Earth Observation (EO) data resources, is specifically targeting the support of fisheries and aquaculture industries in our ocean and near-shore areas. The initiative aims at providing information assistance for marine aquaculture deployment (optimization of cage location with respect to environmental and ecological context) and environmental monitoring during operations. It also targets supporting fisheries providing informative indicator products developed through exploitation of Ocean Colour and Sea Surface Temperature data to derive correlations between the environmental situation and the biological status (maturation stage, recruitment and abundance rates) of the fish and shellfish studied. Developed in close collaboration with key stakeholders in the aquaculture and fishery sectors, the SAFI project proposes synthetic indicators for the species of critical importance to regional fisheries and aquaculture sectors.
Molina-Luzon M.J.,University of Granada |
Lopez J.R.,Centro Agua del Pino |
Robles F.,University of Granada |
Navajas-Perez R.,University of Granada |
And 3 more authors.
Journal of Applied Genetics | Year: 2014
In this study we have developed protocols for induced triploidy and gynogenesis of Senegalese sole (Solea senegalensis), a promising flatfish species for marine aquaculture, in order to: 1) identify the sex-determination mechanism; and 2) to improve its production by generating a) sterile fish, avoiding problems related with sexual maturation, and b) all-female stocks, of higher growth rate. Triploidy was induced by means of a cold shock. Gynogenesis was induced by activating eggs with UV-irradiated sperm, and to prompt diploid gynogenesis, a cold-shock step was also used. Ploidy of putative triploid larvae and gynogenetic embryos were determined by means of karyotyping and microsatellite analysis. Haploid gynogenetic embryos showed the typical “haploid syndrome”. As expected, triploid and gynogenetic groups showed lower fertilization, hatching, and survival rates than in the diploid control group. Survival rate, calculated 49 days after hatching, for haploid and diploid gynogenetic groups was similar to those observed in other fish species (0 % and 62.5 %, respectively), whereas triploids showed worse values (45 %). Sex was determined macroscopically and by histological procedures, revealing that all the diploid gynogenetic individuals were females. In conclusion, we have successfully applied chromosomal-manipulation techniques in the flatfish species Senegalese sole in order to produce triploid, haploid, and diploid gynogenetic progenies. © 2014, Institute of Plant Genetics, Polish Academy of Sciences, Poznan.
Chairi H.,University of Cádiz |
Fernandez-Diaz C.,IFAPA Centro El Toruno |
Navas J.I.,Centro Agua del Pino |
Manchado M.,IFAPA Centro El Toruno |
And 2 more authors.
Ecotoxicology and Environmental Safety | Year: 2010
We have used the comet assay to analyse, after 3h, 24h and 6 days, the genotoxic effect in vivo of applying a single intraperitoneal injection of CuSO4, at a concentration of 2mg/kg, to adult specimens of Solea senegalensis, Dicologlossa cuneata and Scophthalmus rhombus. Metals content (Cu, Zn and Cd) in liver was also measured. The activity of key stress defences was evaluated by analysing antioxidant enzyme activity (catalase (CAT), superoxide dismutase (SOD), total glutathione peroxidase (t-GPX), glutathione reductase (GR), glucose-6-phosphate dehydrogenase (G6PDH) and 6-phosphogluconate dehydrogenase (6PGDH)), metallothionein (MT) and heat shock proteins (HSP70 and HSP60). The results show that CuSO4 intake generates high and cumulative levels of genotoxicity throughout the 6 days in all 3 species. After 6 days, metals content detected in specimens showed significant differences from controls. Inter-species differences were detected in enzyme activity (P<0.05). A clear response to CuSO4 was detected only in S. rhombus, with an increase of MT and a decrease of HSPs. Variations in antioxidant defence levels and their comparative responses to the stress-inducing agent are discussed. © 2010 Elsevier Inc.
Lagos L.,Centro Agua del Pino |
Herrera M.,Centro Agua del Pino |
Sanchez-Lazo C.,Centro Agua del Pino |
Martinez-Pita I.,Centro Agua del Pino |
Martinez-Pita I.,Pontifical Catholic University of Valparaíso
Aquaculture Research | Year: 2015
Interest of mussel hatchery development has increased during the last years as natural seed collection does not always satisfy the demand of producers. Success on larval bivalve culture depends on several factors such as diet, temperature or stocking density. In this study, the effect of larval density in mussel culture success has been assessed testing three larval densities: high (50 larvae mL-1), medium (25 larvae mL-1) and low (5 larvae mL-1). Results showed higher growth and survival at low density but the amount of postlarvae was low. The highest number of settled larvae was observed at high density but mortality was also high and a delay on the larval development was detected producing a prolongation on the culture length. However, medium density resulted in a good survival and growth and also in a considerable amount of postlarvae, as this density could be adequate for massive mussel seed production. Cortisol content on the larvae and postlarvae was also analysed and significant differences were obtained among groups probably due to the stress associated to settlement and metamorphosis. © 2013 John Wiley & Sons Ltd.