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IEO researchers have demonstrated the benefits for the cultivation of Senegalese sole inclusion in the probiotic diet PDP11 Shewanella putrefaciens, Among which conferred resistance against pasteurellosis, one of the most serious diseases responsible for significant economic losses in the Spanish aquaculture sector has led to the closure of many businesses in the Mediterranean area.
Researchers at the Oceanographic Centre of Santander del IEO, in collaboration with the universities of Cantabria (UC) and Malaga (UMA) and the Center for Marine Research (CIMA) of Pontevedra, just published in the journal Aquaculture Research study on the influence the incorporation of probiotic PDP11 in diet has on growth, body composition and resistance to the Senegalese sole pseudotuberculosis (Solea senegalensis).
The use of this probiotic, whose specific name is Shewanella putrefaciensIn addition to significantly improve survival in Photobacterium damselae subsp. piscicida (Bacteria responsible for pateurelosis), promotes improved animal welfare, improving the condition of the units and protecting itself against the stress of intensive cultivation.
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It was thought that the movements of subduction and the oceanic ridges were related to the advancement of tectonic plates. Now a U.S. study published in Nature , reveals another phenomenon involved in this dynamic: the so-called as ‘mantle plumes’.
(Lake Manyara in northern Tanzania, near the Great Rift Valley of Africa. Image: Wikipedia / Clem23.)
The scientific community knew that the phenomenon called ‘mantle plumes’ (the rise of a column of material from the base of the mantle to the base of the lithosphere-surface-) plays an important role in the tectonics of the Earth.
However, until now the experts were unaware of the precise effect that these ‘feathers’ are in the movement of the plates.
“It is assumed that the main forces that drive plate motions associated with subduction and mid-ocean ridges,” says Steven Cande SINC study co-author and researcher at the Scripps Institution of Oceanography in La Jolla (USA).
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Scientists at the Spanish Institute of Oceanography (IEO) have been obtained for the third consecutive year at its plant in Murcia, put tuna viable without hormone induction. The researchers hope the results go far beyond the previous two years in which survival reached 73 and 110 days respectively.
(Farming Bluefin Tuna)
Since last June 9 at the Centro Oceanográfico de Murcia of the Spanish Institute of Oceanography, have been getting daily viable egg production of bluefin tuna in the project SELFDOTT (From capture based to SELF-sustained aquaculture and Domestication Of bluefin tuna, Thunnus thynnus), coordinated by researcher Fernando de la Gándara.
The tuna, about 60 players are housed in two cages floating 25 meters in diameter and 20 meters deep in the bay of El Gorguel (Cartagena), managed by the company of the Mediterranean Fisheries SA pertaining to the business group Ricardo Fuentes , SELFDOTT project participant.
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An American study published in the journal Science , reveals that areas of the Indian and Pacific oceans with less oxygen can expand and reduce their reserves in the coming years. Researchers have found that climate change, and the generation of bacteria, are responsible for these alterations, which could affect the basic nutrients of the ocean waters.
(Representing an area with low oxygen levels (red) from the eastern Pacific. Photo: Science / AAA)
If the ocean warms contains less oxygen, since the water flow decreases and prevents this element, essential for respiration reach the deeper water. The current climate change is causing more global warming and scientists believe that the amount of oxygen in the oceans will be reduced.
In order to understand the origin and impact of this process, U.S. researchers have simulated the life cycle of oxygen in the ocean during the last 50 years.
The findings, published in the journal Science , show that regions with low oxygen levels, located in the Indian and Pacific oceans, can increase or decrease with minimal alteration.
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Eduardo Gonzalez Alfonso, a professor at the University of Alcala, is one of the researchers have found strong dust storms emerging from several galaxies, a finding that explains the evolution of the most luminous galaxies in the local universe.
(Copyright: NASA, ESA and the Hubble Heritage Team (STScI / AURA) -ESA/Hubble Collaboration. Acknowledgment: R. O’Connell (University of Virginia) and the WFC3 Scientific Oversight Committee)
Stars form from interstellar gas and dust. The currents observed by the researchers through the Herschel space telescope of the European Space Agency (ESA) show how these currents stripped the galaxies of the raw materials they need to form new stars, so you can stop the progression of those who are now in training.
Eduardo Gonzalez Alfonso, professor of physics at the University of Alcala, part of the team led by Eckhard Sturm, the German Max-Planck Institute for Extraterrestrial Physics, lead author of the paper presenting the discovery and has recently published The Astrophysical Journal Letters, Published by the American Astronomical Society. Gonzalez’s participation in this research was to build a theoretical model based on data obtained by Hershel to infer the mass loss of galaxies and, consequently, the time required for the gas is completely swept.
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The technology center AZTI-Tecnalia, in collaboration with the Biodiversity Foundation, the Provincial Council of Gipuzkoa and the Basque Water Agency (URA), examine the repopulation of the three stages of the eel during the months of May, June and July, respectively, in three streams in the basin of Oria (Guipuzcoa).
(Sampling of eels in the inner estuary of the River Oria (Guipuzcoa). Image: AZTI-Tecnalia)
The studies done in the waters of Oria order to verify the survival and growth of the three phases of the European eel (eel, and eel angulón) in order to develop and implement tools aimed at the implementation of recovery plans species, so that contributes to the conservation objectives set out in the Plan for European eel management of the Autonomous Community of the Basque Country approved by the European Commission on October 1, 2010.
In addition to reforestation, the project will improve information on the status of the elver stage, estimate the leakage of silver eels and mortality caused by electric turbines in the reproductive phase, and also calculate what the wet surface of the Oria basins.
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The earthquakes of 5.2 and 4.4 degrees to hit the town yesterday Lorca Murcia surprised everyone. But while the failure in Spain, such as de Alhama in Murcia, they move “slowly” was likely to occur because the Southeast is one of the areas most at risk. The question now is whether partial or complete collapse of the buildings could have been avoided Lorca.
(A resident of Lorca walks among the rubble after the collapse. Image: Globovision)
Since the late ’60s and early ’70s, Spain has an earthquake resistant building codes mandatory. Currently, the latest version, dated 2002, is in the process of revision. Like the others, establishes the places to be built under this standard and specification of how to do it.
The Region of Murcia is one of the areas vulnerable to seismic activity. A Spanish building regulations joins the European Eurocode 8 established in 2010. However, the two earthquakes of 5.2 and 4.4 degrees that have strongly shaken the city of Lorca have generated some building collapses killing eight people. Were the buildings ready?
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The decade from 2000 to 2009 was the warmest on record so far in the North Atlantic. However, during the same decade, the warming rate of increase has been slowing down. Year with further increase in temperature is concentrated in the first half, reducing the rate of increase at the end of the decade.
In the Bay of Biscay the increase is about 0.3 º C per decade in most surface water and about 0.2 ° C per decade in up to 1,000 meters deep. In contrast, the warming in the boreal regions has been higher and may reach even 1.0 ° C per decade.
This heating process is particularly affecting the plankton in the North Atlantic in two senses: first, changes in the proportion of different marine species present in water, on the other, there are also changes in size structure of planktonic communities, increasing the proportion of smaller organisms.
For example, it has increased the proportion of bacteria. These changes in background levels of the food chain can affect the rest of the chain, due to higher living on feed on the smaller ones, to reach all of the North Atlantic marine organisms, including species fishing interest.
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The deep-sea species are colonizing the Antarctic continental shelf, an ecosystem that had remained stable under a layer of ice over the past 1,000 years and has been released after the collapse of more than 10,000 km ² of ice in the last 15 years. This is confirmed by an international team of researchers, involving the CSIC, who has studied for 70 days the effects of climate change in Antarctica.
“Until five years ago, when the project Climantica, which covers this issue, first visited the Larsen A and B bays, it was thought that the process of recolonization of the continental shelf were very slow. At that time the results opened new questions about the speed of recovery of those areas, “said Enrique Isla, a researcher at the Institute of Marine Sciences (CSIC), who participated in the expedition to the frozen continent.
This year researchers have observed that the recovery of the seabed varies across regions. “Apparently, the Antarctic continental shelf in the area of Larsen bays in the western Weddell is recolonized faster than the high Antarctic,” he continues island
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On Sunday May 1st, researchers and technicians of the research team ECOMARG the Spanish Institute of Oceanography (IEO), recently awarded with the BBVA Foundation Award for Biodiversity Conservation for his “decisive contribution” to the creation of the first area Marine Protected ocean in Spain, investigated the Avilés Canyon ecosystem, a vast submarine canyon candidate to be part of Natura 2000.
A team of two geologists, five biologists, a physicist and five research assistants on board for 20 days on board the research vessel of the Secretary General of the Sea Viscount Eza To study the structure and dynamics of ecosystems Aviles deep canyon.
The scientific research group belonging to the Spanish Institute of Oceanography (IEO) ECOMARG, which has recently been awarded the BBVA Foundation Award for Biodiversity Conservation for allowing their study the creation of the first Marine Protected Area in Spain oceanic , intended to gather information on this gigantic submarine canyon, one of the ten candidates Spanish marine part of the Natura 2000 network under the project INDEMARES.
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