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Aquaculture industry
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An international group of scientists is linking nutrient pollution in the world's coastal seas to an increase in the number of harmful algal blooms reported in recent years. When harmful algal blooms (HAB's) occur, they taint seafood with toxins, cause human respiratory and skin irritations and cause fish or mammal kills in coastal waters.
In the December edition of the journal Harmful Algae, scientists present a compilation of 21 articles outlining the role of nutrient pollution in...
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Saving water is an environmentally responsible goal, especially in the southeastern parts of the country, where droughts are fairly frequent. To that end, Agricultural Research Service scientists in Tifton, Georgia, are testing the feasibility of using floating vegetation to remove nutrients from fishery wastewater. The long-term goal is to develop a system to treat fishery wastewater, return it to ponds for reuse, and use the nutrients to produce biomass, or plant material.
The...
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Functional yeast protein improves fish health in reduced fishmeal diets
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Improved management techniques can reduce environmental effects of the practice
Aquaculture production of seafood will probably remain the most rapidly increasing food production system worldwide through 2025, according to an assessment published in the January 2009 issue of BioScience . The assessment, by James S. Diana of the University of Michigan at Ann Arbor, notes that despite well-publicized concerns about some harmful effects of aquaculture,...
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Effect of fish oil on arrythmias and mortality: Systematic review
Fish oil protects against deaths from heart problems, but doesn't provide a clear benefit in heart rhythm problems (arrhythmias), according a study published on BMJ-British Medical Journal.
More funding is urgently needed in this neglected area of nutrient research, say the authors of an accompanying editorial.
Consuming oily fish at least two...
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PRICHEMIN MIX
Priya's PRICHEMIN MIX is a mineral supplement for aquaculture. It consists of a mix of mineral chelats from aminoacids
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Another health threat posed by catfish imported from China has been discovered. The Catfish Institute has warned that the imports could contain melamine, the substance discovered in Chinese-produced milk powder. The substance resulted in tainted infant formula, linked to illness in 294,000 small children and six deaths in China.
Louisiana has been fighting the sale of seafood imported from China for years. Probably the strongest measure was taken in 2005, when the state agriculture...
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African catfish are a popular aquaculture species, but until now they have been difficult to grade automatically. Fischtechnik International Engineering GmbH (FTIE) has recently conducted a successful grading trial for African catfish and can now recommend its own grading machines for use with the species. African catfish (Clarias gariepinus) are robust, grow rapidly and have modest requirements concerning protein levels in feed or water quality. In particular the species' ability...
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Functional yeast protein improves fish health in reduced fishmeal diets
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An ocean farmed salmon trade association, Salmon of the Americas, recently announced that the health and environmental benefits from the consumption of farmed salmon are equal to, and often greater than, the benefits of wild salmon. Although many public misconceptions exist regarding farm vs wild salmon, the USDA Nutrient Database supports the organization's assertion that farmed salmon is a safe and healthy protein choice. Salmon of the Americas is an organization...
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The Cape Eleuthera Institute (CEI) began stocking an offshore cage with 2,000 cobia fingerlings in the first phase of its aquaculture project. A total of 7,000 fingerlings have been raised for the past three months in CEI's Wege Center for Sustainable Fisheries as part of an offshore aquaculture research project that is being conducted in collaboration with the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) and Alicorp, a Peruvian conglomerate that is...
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PRICHEMIN MIX
Priya's PRICHEMIN MIX is a mineral supplement for aquaculture. It consists of a mix of mineral chelats from aminoacids
Suggested link
A third Norwegian salmon farm is currently on-growing smolts from Landcatch Scotland, completing a year of exceptionally good performance in Norwegian waters of stock supplied directly from the Argyll-based company.
The latest smolt export consisted of 200,000 S0s which were delivered to Melaks AS, at Austevoll in Hordaland county in September. This followed excellent growth and strong survival in Landcatch stock being on-grown earlier this year by Lingalaks at their Saltkjelen site...
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Better tasting barramundi, with healthy management and feeding strategies developed by WA Department of Fisheries research, is helping fish farmers develop new opportunities. Research scientist Dr Brett Glencross said aquaculture was on a very fast growth path, with the catches of wild fish stocks having little or no scope for growth around the world. "The department has had one of the most active research and development programs on barramundi production, since...
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Functional yeast protein improves fish health in reduced fishmeal diets
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The European eel's biology and ecology never cease to amaze us. At the elver stage, certain individuals swim up estuaries to grow in rivers, whereas others spend their entire life cycle at sea. In Bordeaux, researchers have looked into the origin of this divergence in migratory behaviour. What if it was only a question of energy reserves and feeding behaviour? Over-fishing, pollution, river development, global climate changes, etc. are threatening a large number of migratory...
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Provisional results from trials of new bagged longline bait are extremely promising. Two types of bagged bait containing pulverised mackerel have been tested against traditional bait.
On commission from the Norwegian Fishery and Aquaculture Industry Research Fund (FHF) and the Norwegian Fishermen's Sales Organisation, Nofima, together with longline fishing vessel "Sigurdur B", carried out trials with hand baited longlines in the Malangen fishing ground in Troms in...
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PRICHEMIN MIX
Priya's PRICHEMIN MIX is a mineral supplement for aquaculture. It consists of a mix of mineral chelats from aminoacids
Suggested link
In Europe, most migratory fish species completing their cycle between the sea and the river are currently in danger. Although restoration programmes have been set up, the future distribution of these species may be modified because of climate change. At the Bordeaux Cemagref, scientists have developed biogeographical models to predict their distribution on the 2100 horizon. Migratory fish are noteworthy in that they use both the sea and freshwater environments to complete their...
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Farming of fish in ocean cages is fundamentally harmful to wild fish, according to an essay in this week's Conservation Biology.
Using basic physics, Professor Neil Frazer of the UHM Department of Geology and Geophysics explains how farm fish cause nearby wild fish to decline. The foundation of his paper is that higher density of fish promotes infection, and infection lowers the fitness of the fish.
For wild fish, lowered fitness means more difficulty finding food and...
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Functional yeast protein improves fish health in reduced fishmeal diets
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The elevated carbon dioxide levels expected to be found in the world's oceans by 2100 will likely lead to physiological impairments of jumbo (or Humboldt) squid, according to research by two University of Rhode Island scientists.
The results of a study by Brad Seibel, URI assistant professor of biological sciences, and Rui Rosa, a former URI post-doctoral student now on the faculty at the University of Lisbon, Portugal, is reported in this week's issue of the Proceedings of the...
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The Marine Stewardship Council (MSC), a foundation dedicated to maintaining the health and viability of our oceans, has more of an impact in the area of overfishing than all the agreements entered into by the World Trade Organisation (WTO), concludes dr. Peter Oosterveer of the Environmental Policy faculty group at Wageningen University in the December issue of Ocean and Coastal Management . There is a great need for global regulations according to the environmental...
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PRICHEMIN MIX
Priya's PRICHEMIN MIX is a mineral supplement for aquaculture. It consists of a mix of mineral chelats from aminoacids
Suggested link
Conserving biodiversity or plundering genetic diversity? What is captive breeding doing to fish populations? Human impacts on the environment have reduced populations of wild species to dangerously low levels. Nowhere is this more apparent than in worldwide fisheries, where thanks to overfishing and habitat destruction, countless species and populations of fish are on the brink of disappearing forever. To attempt to mitigate the dire situation, captive breeding, the...
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Swallowing fish oil capsules for brain boosting, health-promoting omega-3 may be just as effective as tucking into a fillet of salmon. But if you want a dose of selenium as well - an element many New Zealanders are lacking - then go for the salmon fillet, say Massey researchers.
Researchers at Massey's Institute of Food, Health and Human Nutrition in Albany investigated which of salmon or fish oil tablets is better for people to increase their omega-3 fatty acid status. Omega-3 is...
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Functional yeast protein improves fish health in reduced fishmeal diets
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Attempts to avoid dams decrease survival in adult fish.
Scientists have discovered that management efforts intended to assist migrations of salmon and steelhead trout can have unintended consequences for fish populations. Juveniles that are transported downstream on boats can lose the ability to migrate back to their breeding grounds, reducing their survivorship and altering adaptations in the wild.
Transportation programs have been in place for over...
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Pangasius (basa, tra) farming, the fastest-growing field in global aquaculture, needs an integrated approach through an ecosystem to ensure sustainable development, said international experts at a seminar in Can Tho city on December 5. More than 150 representatives from 18 nations have gathered in the Cuu Long ( Mekong ) Delta city in Can Tho for an international symposium to share experience in all aspects of basa farming. The event, called "Pangasius aquaculture...
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