She’s hoping to secure the necessary permits this year, deploy equipment next year, get fish onto the site in the spring, and reap her first harvest by the end of 2019. Divers around a deepwater aquaculture cage at the Cape Eleuthera Institute in The Bahamas. The UK Ministry of Defence faces a parliamentary inquiry over its decision to award the contract for the Royal Navy’s new dry stores auxiliaries to a Spanish-British consortium instead of a domestic bidder. The House of Commons’ Defence Committee plans to ask tough questions of the administration of Prime Minister Rishi Sunak over the award, including the number of jobs that will be created or sustained in Spain. The pointed questions come from both Tory and Labour MPs, reflecting the…
Oceans cover 71 percent of Earth yet provide less than 2 percent of our food—for now. Nor have fish farms in other parts of the globe been free of problems. The modern salmon industry, which over the past three decades has plunked densely packed net pens full of Atlantic salmon into pristine fjords from Norway to Patagonia, has been plagued by parasites, pollution, and disease. Scottish salmon farms lost nearly 10 percent of their fish in 2012 to amoebic gill disease; in Chile infectious anemia has killed an estimated two billion dollars’ worth of salmon since 2007.
One place that has garnered international media attention is British Columbia’s Broughton Archipelago. There, juvenile wild salmon must “run a gauntlet” of large fish farms located off-shore near river outlets before making their way to sea. The farms allegedly cause such severe sea lice infestations that one study predicted in 2007 a 99% collapse in the wild salmon population by 2011.
Areas which are more drought-prone, indoor fish farms might flow out wastewater for watering agricultural farms, reducing the water affliction. Fish farmed in closed systems like fish tanks are more environmentally friendly. Closed cá dĩa hòa phát allow fish farmers to manage the feed, antibiotic, and fecal waste of farmed fish. This prevents the spread of disease into the local ecosystem that would be present in open pen systems. Closed pen systems also prevent carnivorous fish from escaping and ravishing wild fish populations.
“Streams with temperatures greater than 64 degrees Fahrenheit (17.8°C) can stress salmon, and when rivers reach 70 degrees Fahrenheit (21°C), salmon begin to die. Without actions to address impacts from climate change there will be fewer salmon and fewer rivers where they can survive,” warns the report. The U.S. is still a small player in aquaculture worldwide, says Hedlund, so there is plenty of room for U.S. expansion – if you’re interested. Even if you’re not interested, it’s good to keep up with what’s going on in the rest of the global food supply chain.
You may not want to introduce an unwanted subspecies into your area that will eventually supplant other, more desirable fish. Whether you do fish farming in a pond, swimming pool, or a koi pond you have to feed your fish. In the North Atlantic region alone, up to two million runaway salmon escape into the wild each year. The result is that at least 20% of supposedly wild salmon caught in the North Atlantic are of farmed origin .