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Wild salmon tends to be reddish-orange, while farmed salmon is pink. Therefore, nutritionally, wild salmon has a healthier edge for having fewer calories and less saturated fat than farmed salmon. Globally, wild salmon stocks have shrunk down to just half their size over the course of the past few decades. Wild salmon are amazing creatures. Updated January 11, Sometimes healthy food choices are easy: You know leafy greens are nutritious, seasonal veggies are wholesome, and sugar is best left on the shelf. The Effects Of Salmon Farming On The

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The bottom of salmon farms

This article is about diseases and parasites in salmontrout and other salmon-like fishes of the family Salmonidae. According to Canadian biologist Dorothy Kieser, the myxozoan parasite Henneguya salminicola is commonly found in the flesh of salmonids. It has been recorded in the field samples of salmon returning to the Queen Charlotte Islands.

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The fish responds by walling off the parasitic infection into a number of cysts that contain milky fluid. This fluid is an accumulation of a large number of parasites. Henneguya and other parasites in the myxosporean group have a complex life cycle where the salmon is one of two hosts. The fish releases the spores after spawning. In the Henneguya case, the spores enter a second host, an invertebrate, in the spawning stream. When juvenile salmon migrate to the Pacific Ocean, the second host releases a stage infective to salmon.

The parasite is then carried in the salmon until the next spawning cycle. The myxosporean parasite that causes whirling disease in trout has a similar life cycle. According to Dr. Kieser, a lot of work on Henneguya salminicola was done by scientists at the Pacific The Effects Of Salmon Farming On The Station in Nanaimo in the mids, in particular, an overview report [2] which states that "the fish that have the longest fresh water residence time as juveniles have the most noticeable infections.

Hence in order of prevalence coho are most infected followed by sockeye, chinook, chum and pink. It is strictly a fish parasite that cannot live in or affect warm blooded animals, including man".

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I have previously examined smoked chum salmon sides that were riddled with cysts and some sockeye runs in Barkley Sound southern B. Sea liceparticularly Lepeophtheirus salmonis and various Caligus species, including C. Sea lice are ectoparasites which feed on mucus, blood, and skin, and migrate and latch onto the skin of wild salmon during free-swimming, planktonic nauplii and copepodid larval stages, which can persist for several days. InGyrodactylusa monogenean parasite, The Effects Of Salmon Farming On The from Norwegian hatcheries to wild salmon, and devastated some wild salmon populations. Enteric redmouth disease is a bacterial infection of freshwater and marine fish caused by the pathogen Yersinia ruckeri.

It is primarily found in rainbow trout and other cultured salmonids. The disease is characterized by subcutaneous hemorrhaging of the mouth, fins, and eyes. It is most commonly seen in fish farms with poor water quality.

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Redmouth disease was first discovered in Idaho rainbow trout in the s. Eighty percent of the fish in the outbreak died. ISAv, a viral disease, is now a major threat to the viability of Atlantic salmon farming. Amongst Farjing measures, this requires the total eradication of the entire fish stock should an outbreak of the disease be confirmed on any farm. ISAv seriously affects salmon farms in ChileNorwayScotland and Canadacausing major economic losses to infected farms.]