About salmon

Sea lice, above all Lepeophtheirus salmonis and various Caligula species, counting Caligula Caligula retrogression, can clemency and reason deadly infestations of both farm-grown and wild salmon. Sea lice are parasites which feed on mucus, blood, and skin, and journey and latch onto the skin of wild salmon through free-swimming, plank tonic Paulina and Copperfield larval stages, which can continue for several days. Large numbers of highly settled, open-net salmon farms can create exceptionally large concentration of sea lice; when exposed in river estuaries contain large numbers of open-net farms, many young wild salmon are dirty, and do not survive as a result. Adult salmon may survive otherwise critical numbers of sea lice, but tiny, thin-skinned juvenile salmon migrating to sea are exceedingly vulnerable. On the Pacific coast of Canada, the louse-induced mortality of pink salmon in some regions is frequently over 80%A 2008 meta-analysis of accessible data shows that salmon farming reduces the endurance of associated wild salmon populations. This relationship has been shown to hold for Atlantic, steel head, pink, chum, and coho salmon. The decrease in survival or abundance often exceeds 50 percent. Diseases and parasites are the most commonly cited reasons for such decreases. Some species of sea lice have been noted to target farmed coho and Atlantic salmon. Such parasites have been shown to have an outcome on nearby wild fish. One place that has garnered intercontinental media attention is British Columbia's Brought on 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. It is alleged that the farms cause such cruel sea lice infestations that one study predicted in 2007 a 99% collapse in the wild salmon population by 2011. This claim, however, has been criticized by numerous scientists who question the correlation between increased fish farming and increases in sea lice infestation among wild salmon.