2009年2月27日 星期五

Wild Salmon in Trouble

I just wrote about how blessed we are here because we get to eat wild salmon relatively inexpensive. I must admit that i was a little naive to have written that, because wild salmon are in trouble now, and sooner or later not only will we have little wild salmon left to eat, but also the entire ecosystem that depend on wild salmon will collapse, if we continue to be oblivious about the open-net practice of salmon farming.

below is a neat little animation that describes the impacts and relationships between sea-lice, salmon farms, and wild stocks

http://www.focs.ca/fishfarming/SealiceVideo/WW_sealice_video.html

It can be concluded that farmed salmon are bad for many reasons: wastes produced by farming, escaped farmed salmon into the wild, diseases and parasites, chemicals used in farms, toxicity to human health etc.
Not all farmed fish is raised equally though. Salmon are carnivorous so large stock of wild fish has to be captured to make into salmon feed, which is not sustainable. Instead of farming carnivores such as salmon and we should be farming herbivorous species lower down the food chain such as tilapia.

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