The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Farmed Salmon Industry Causing Global Sea Lice Crisis
A tiny bug is behind a major problem in the global farmed salmon industry.
The sea louse, or salmon louse, is eating into farmed Atlantic salmon supplies in Scotland, Norway, Iceland and Canada, driving salmon prices higher and creating a "chemical arms race in the seas," the Guardian reports.
Salmon companies around the world are spending an estimated $1.25 billion a year combined to tackle such outbreaks, the publication notes.
Salmon lice attach themselves onto wild or farmed salmon, living off the host fish's blood and skin and leaving it vulnerable to infections. As EcoWatch explained previously, crowded conditions in pens used for raising salmon can provide an ideal breeding ground for sea lice. In farms in some parts of the world, a pesticide is used to combat sea lice that is toxic to marine life and banned by both the European Union and U.S. Food and Drug Administration.
"What we are seeing now is a chemical arms race in the seas, just like on the land farms, where the resistance of plants to chemicals is growing," Don Staniford, head of the Global Alliance Against Industrial Aquaculture, told the Guardian. "In fish farms, the parasites are increasing resistance to chemicals and antibiotics. There has been a 10-fold increase in the use of some chemicals in the past 18 months."
Chemicals used to control salmon lice rose 932 percent on Scottish farms in the last decade, even though farmed salmon production only increased by 35 percent. Norway has ramped up its usage of hydrogen peroxide baths surged as well.
But like superweeds, salmon lice are growing resistant to such chemicals and antibiotics, leading some salmon farms to resort to potentially risky methods to beat back the parasite.
Staniford also described how some farms are using mechanical ways to remove the lice.
"They are using hydro-dousers, like huge carwashes, and thermal lousing, which heats them up," he said.
Some farms in Norway have successfully used this delousing method, deploying millions of wrasse to keep their salmon stocks healthy.
However, even that technique has a catch—a new study found that this practice may be depleting wild wrasse populations.
EcoWatch Daily Newsletter
By Zak Smith
It is pretty amazing that in this moment when the COVID-19 outbreak has much of the country holed up in their homes binging Netflix, the most watched show in America over the last few weeks has been focused on wildlife trade — which scientists believe is the source of the COVID-19 pandemic. Make no mistake: Tiger King: Murder, Mayhem and Madness is about wildlife trade and other aspects of wildlife exploitation, just as surely as the appearance of Ebola, SARS, MERS, avian flu and probably COVID-19 in humans is a result of wildlife exploitation. As a conservationist, this is one of the things I've been thinking about while watching Tiger King. Here are five more:
By Hector Chapa
With the coronavirus pandemic quickly spreading, U.S. health officials have changed their advice on face masks and now recommend people wear cloth masks in public areas where social distancing can be difficult, such as grocery stores.
But can these masks be effective?
By Carey Gillam
Bayer AG is reneging on negotiated settlements with several U.S. law firms representing thousands of plaintiffs who claim exposure to Monsanto's Roundup herbicides caused them to develop non-Hodgkin lymphoma, sources involved in the litigation said on Friday.
With many schools now closed due to the current COVID-19 outbreak, you may be looking for activities to keep your children active, engaged, and entertained.
Although numerous activities can keep kids busy, cooking is one of the best choices, as it's both fun and educational.
Germany's target for renewable energy sources to deliver 65% of its consumed electricity by 2030 seemed on track Wednesday, with 52% of electricity coming from renewables in 2020's first quarter. Renewable energy advocates, however, warned the trend is imperiled by slowdowns in building new wind and solar plants.