ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Growth is a priority trait from the point of view of genetic improvement. Molecular markers linked to quantitative trait loci (QTL) have been regarded as useful for marker-assisted selection in complex traits as growth. Polymorphisms have been studied in five candidate genes influencing growth in gilthead ...
This study aims at investigating the spawning migration of the endemic Labeobarbus species and C. gariepinus from Lake Tana, through Ribb River, to Welala and Shesher wetlands. The study was conducted during peak spawning months (July to October, 2010). Fish were collected through overnight gillnet ...
Background MicroRNAs (miRNAs) are key posttranscriptional regulators of gene expression that are implicated in many processes of eukaryotic cells. It is known that the expression profiles of host miRNAs can be reshaped by viruses. However, a systematic investigation of marine invertebrate miRNAs that ...
Background Molecular and cytogenetic markers are of great use for to fish characterization, identification, phylogenetics and evolution. Multigene families have proven to be good markers for a better understanding of the variability, organization and evolution of fish species. Three different tandemly-repeated ...
Discards represent one of the most important issues within current commercial fishing. It occurs for a range of reasons and is influenced by an even more complex array of factors. We address this issue by examining the data collected within the Danish discard observer program and describe the factors ...
Abstract Trends in offshore exploration continually push the definition of high pressureand high temperature in regards to oil and gas well completions. Recentdiscoveries in the Gulf of Mexico (GOM) are opening up vast reserves of naturalgas and these discoveries are again challenging that definition. ...
Abstract The unitised deepwater Jubilee Field is located 60 km offshore Ghana andcommenced production in late 2010. An FPSO has been installed with oil capacityof 120,000 barrels per day. This was a major oil project execution carried outin a country new to such activities. It was clear from the time ...
Abstract Tomorrow's energy needs are driving the Oil and Gas Industry to achieve ‘No oilleft behind'. This comes at a cost as the pressures in remote deepwaterreservoir pockets are depleted and the water cuts increases. Existingtechnology is evolving to meet the challenges to automate water ...
Abstract Oil spill response strategies are designed to minimize environmental impacts tothe extent possible. Each response option must be evaluated for operationallimitations (e.g., sea state), potential effectiveness, environmental impactsof the response option itself, and applicability under various ...
Abstract The ROVDrill Mk.2 is a state-of-the-art seabed push sampling, rotary coring andin situ testing system designed for working in 2500m water depth and obtaininggeotechnical data to a depth of 120m below seabed. The system has beendeveloped as a geotechnical upgrade to two ROVDrill subsea robotic ...
Abstract The risk of an export buoy's loading hose being pierced by the spear of abillfish such as marlin is very real. Such incidents are proving especiallyfrequent on FPSOs offshore Angola, where several cases are recorded everyyear. The consequences can be critical, to the extent of halting ...
Laboratory evaluations were made to assess the toxicological and biochemical effect of cypermethrin on fingerlings of common edible freshwater culture carp (Labeo rohita). There was a significant negative (P 0.278 μg/L (12 h), > 0.240 μg/L (18 h) and >0.205 μg/L (24 h). Exposure to sublethal ...
A phosphatase inhibition assay for detection of okadaic acid (OA) toxins in shellfish, OkaTest, was single laboratory validated according to international recognized guidelines (AOAC, EURACHEM). Special emphasis was placed on the ruggedness of the method and stability of the components. All reagents ...
Background Aeromonas spp. are versatile bacteria that exhibit a wide variety of lifestyles. In an attempt to improve the understanding of human aeromonosis, we investigated whether clinical isolates displayed specific characteristics in terms of genetic diversity, population structure and mode of evolution ...
Abstract One of the most important oil discoveries of the last 10 years, in the wholeworld, was made in Brazilian offshore deep waters. The so called BrazilianPre-salt province comprises reservoirs below a layer of variable thickness ofsalt, which can reach up to 2,000m. Since 2006 several oil fields ...
Aquaculture has been considered as an option to cope with the world food demand. However, criticisms have arisen around aquaculture, most of them related to the destruction of ecosystems such as mangrove forest to construct aquaculture farms, as well as the environmental impacts of the effluents on ...
Vancomycin-resistant Enterococcus faecalis, E. faecium and E. durans isolates with the genotype vanA were detected in 7 of 118 faecal samples (5.9%) of natural gilthead seabream recovered off the coast of Portugal, and one vancomycin-resistant isolate/sample was further characterized. The genes erm(B), ...
Species of Oithona (Copepoda, Cyclopoida) are highly abundant, ecologically important, and widely distributed throughout the world oceans. Although there are valid and detailed descriptions of the species, routine species identifications remain challenging due to their small size, subtle morphological ...
High irradiation and the presence of xenobiotics favor the formation of reactive oxygen species in marine environments. Organisms have developed antioxidant defenses, including the accumulation of carotenoids that must be obtained from the diet. Astaxanthin is the main carotenoid in marine crustaceans ...