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« เมื่อ: กุมภาพันธ์ 24, 2009, 10:50:22 PM »

Source: Boise Weekly  World News    21/02/2009 23:51:19

Tara Morgan
Stroll by a supermarket fresh fish counter and you'll see varying shades of pink and gray flesh—salmon, trout, catfish, raw shrimp—piled on mounds of crushed ice.

 

But look closer through the smudged display case and you'll find a United Nations assembly of marine ambassadors, name tags proclaiming: "Arrowtooth Flounder, U.S.A., wild" or "Fresh farmed salmon steak, color added, Canada, farm-raised" or "Raw shrimp, Thailand, farm-raised." Though the debate over food miles—the amount of carbon used transporting food from its source to your plate—has been widely discussed of late, there's another issue playing out in this seafood case that's less prominent but equally important: aquaculture.

 

Aquaculture, or the commercial cultivation of ocean and fresh-water fish and shellfish, is a slippery issue. While on one side, it can be seen as a sustainable solution to curtail destruction caused by commercial fishing, on the other, concerns have been raised about water pollution, wild-caught fish used to feed farm-raised fish and health risks posed by use of antibiotics and chemical dyes.

 

Though approximately 90 percent of the world's farm-raised fish are produced in China and the rest of Asia and the Pacific region, the United States does have its own sizeable aquaculture industry. In fact, just a few hours away, in the Magic Valley, millions of trout splash about in man-made concrete raceways. Idaho is the nation's No. 1 producer of farm-raised rainbow trout—about 70 percent of the country's total. And though aquaculture is the state's third-largest food-animal industry—reeling in $37.5 million in 2005—you probably won't be seeing farm-raised trout novelty license plates any time soon.

read more
http://www.growfish.com.au/content.asp?ContentId=12896
 
 
 
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