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The inclusion of vegetal raw materials in feed for fish farming has increased the risk of mycotoxin occurrence in feed, as well as in edible tissues from fish fed with contaminated feed, due to the carry-over to muscle portions. Therefore, the objective of this study was to evaluate the occurrence of 15 mycotoxins in processed fish products, which are commonly consumed, such as smoked salmon and trout, different types of sushi, and gula substitutes. A QuEChERS method was employed to perform the mycotoxin extraction from fish samples. For mycotoxin identification and quantitation, the selected technique was the liquid chromatography-tandem mass spectrometry linear ion trap (LC-MS/MS-LIT). Smoked fish and sushi samples results were negative regarding the presence of all 15 mycotoxins studied. In contrast, small amounts of fusarenon-X and enniatin B were found in gula substitute samples.

Subduction of a narrow slab of oceanic lithosphere beneath a tightly curved orogenic arc requires the presence of at least one lithospheric scale tear fault. While the Calabrian subduction beneath southern Italy is considered to be the type example of this geodynamic setting, the geometry, kinematics and surface expression of the associated lateral, slab tear fault offshore eastern Sicily remain controversial. Results from a new marine geophysical survey conducted in the Ionian Sea, using high-resolution bathymetry and seismic profiling reveal active faulting at the seafloor within a 140 km long, two-branched fault system near Alfeo Seamount. The previously unidentified 60 km long NW trending North Alfeo Fault system shows primarily strike-slip kinematics as indicated by the morphology and steep-dipping transpressional and transtensional faults. Available earthquake focal mechanisms indicate dextral strike-slip motion along this fault segment. The 80 km long SSE trending South Alfeo fault system is expressed by one or two steeply dipping normal faults, bounding the western side of a 500+ m thick, 5 km wide, elongate, syntectonic Plio-Quaternary sedimentary basin. Both branches of the fault system are mechanically capable of generating magnitude 6–7 earthquakes like those that struck eastern Sicily in 1169, 1542, and 1693. peer-reviewed

In the Mediterranean, fishing is an ancient tradition and signs of its presence can be found everywhere along its coasts. In early times, most fishing was carried out from land with small nets and traps and only a portion of the fishing operations was carried out from boats away from the coast. Over time, growth of human populations along the Mediterranean coasts led to the expansion of sea fishing and gradual depletion of many near-shore stocks. Until recently, fishing in the Mediterranean retained its artisanal character. The type of small vessels, the fishing gears and labour-intensive character of the operations had changed little from generation to generation. However, some fishing practices benefited greatly from the advent of new technologies, such as those that replaced sails by powered engines, or the incorporation of fish-finding devices and efficient gear-handling techniques. These developments added to a growing market demand from the booming Mediterranean population, and led to overfishing of the most vulnerable target populations.

New high-quality high-resolution bathymetric data along the northeastern slope of the Gulf of Cadiz continental margin reveals three gullies fields. The morphological and morphometric features of these gullies have been studied. The following morphometric variables have been measured in every gully in order to make a quantitative morphological analysis: width, depth, thalweg length, straight line length, area, sinuosity index, width/depth ratio, and stream order. The morphological characterization of the gullies suggests that these morphologies vary with the local physiography (concavity/convexity of the slope), the sediment transport efficiency, tectonic control and oceanographic regime. Versión del editor

The stable isotope composition of dissolved silicon in seawater (δ30SiDSi) was examined at 10 stations along the GEOVIDE section (GEOTRACES GA-01), spanning the North Atlantic Ocean (40–60° N) and Labrador Sea. Variations in δ30SiDSi below 500 m were closely tied to the distribution of water masses. Higher δ30SiDSi values are associated with intermediate and deep water masses of northern Atlantic or Arctic Ocean origin, whilst lower δ30SiDSi values are associated with DSi-rich waters sourced ultimately from the Southern Ocean. Correspondingly, the lowest δ30SiDSi values were observed in the deep and abyssal eastern North Atlantic, where dense southern-sourced waters dominate. The extent to which the spreading of water masses influences the δ30SiDSi distribution is marked clearly by Labrador Sea Water (LSW), whose high δ30SiDSi signature is visible not only within its region of formation within the Labrador and Irminger seas, but also throughout the mid-depth western and eastern North Atlantic Ocean. Both δ30SiDSi and hydrographic parameters document the circulation of LSW into the eastern North Atlantic, where it overlies southern-sourced Lower Deep Water. The GEOVIDE δ30SiDSi distribution thus provides a clear view of the direct interaction between subpolar/polar water masses of northern and southern origin, and allow examination of the extent to which these far-field signals influence the local δ30SiDSi distribution.

La Campaña Fletán Ártico 2004 ha sido dirigida y llevada a cabo por el Equipo de Pesquerías Lejanas del IEO del Centro Oceanográfico de Vigo. Es la octava de una serie destinada a obtener índices de abundancia y conocer la estructura de la población de fletán negro (Reinhardtius hippoglossoides) en el área de Protección del Archipiélago Svalbard, División IIb del CIEM. Por quinto año consecutivo el barco utilizado fue el B/C Garoya Segundo. La Campaña se desarrolló entre los días 30 de septiembre y 30 de octubre, realizándose 153 pescas en un rango de profundidad entre 523 y 1356 metros, en el talud oeste del mencionado archipiélago, entre las latitudes 73º 30´ N y 80º N. Se recogieron gónadas de fletán negro y platija americana para estudiar su fecundidad; se recogieron otolitos de fletán negro, platija americana y bacalao para estudios de crecimiento y se analizaron los contenidos estomacales de las principales especies ícticas para conocer su dieta alimenticia. La especie más abundante fue el fletán negro, con una captura de 153859 Kg, seguida del lirio, 1107.6 Kg. El resto de las especies no alcanzaron el 5.2% de la captura total. Los valores estimados de la biomasa y la abundancia de fletán negro aumentaron por segunda vez en tres años. Esto indica el inicio de una evolución positiva, variando la tendencia negativa, debido probablemente a un cambio en la distribución estacional. La estructura demográfica de la fracción estudiada de la población muestra un elevado grado de estabilidad a través de los años. The “Fletán Ártico 2004” bottom trawl survey has been directed and conducted by the Distant Fisheries Team of the IEO, Vigo Oceanographic Center. It is the eighth in a series designed to obtain abundance indices and know the structure of the population of Greenland halibut (Reinhardtius hippoglossoides) in the Svalbard Archipelago Protection, from ICES Division IIb. For the fifth consecutive year, the ship used was the C/V “Garoya Segundo”. The survey took place between 30 September and 30 October, performing 153 hauls in a depth range between 523 and 1356m, on the western slopes of that archipelago, between 73º 30'N and 80°N latitudes Gonads were collected from Greenland halibut and American plaice to study their fertility, were collected otoliths from Greenland halibut, American plaice and cod for growth studies and analyzed the stomach contents of the main fish species to know their diet. The most abundant species was the black halibut, with a catch of 153,859 kg, followed by the Blue whiting (Micromesistius poutassou), 1107.6 Kg The remaining species did not reach the 5.2% of the total catch. The estimated values of biomass and abundance of Greenland halibut increased for the second time in three years. This indicates the beginning of positive developments, changing the negative trend, probably due to a change in the seasonal distribution. The demographics of the population studied fraction show a high degree of stability through the years. Equipo de Pesquerías Lejanas. Centro Oceanográfico de Vigo

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