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[Duurzaamlijst] Fish farming drains seas, UBC fisheries expert says



On 20 Feb 2001, at 13:31, Transgenic Fish and Marine Life wrote:

Transgenic Fish and Marine Life (transgenicfish@iatp.org)    
Posted:
02/20/2001  By  satori@pubnix.net	
=================================================
===========



http://www.nationalpost.com/scripts/printer/printer.asp?f=/stories/20
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10220/479849.html

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010
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                                   February
20, 2001

 Fish farming drains seas, UBC fisheries expert says
 Big fish eat little fish

 National Post

 SAN FRANCISCO - Carnivorous caged fish are helping to deplete 
the
oceans, scientists say.

 Salmon, the mainstay of Canadian aquaculture, are fed fish meal made
 of
vast quantities of little fish
 that are scooped out of the ocean, scientists told the annual meeting
of American Association for the
 Advancement of Science.

 "The new trend in aquaculture is to drain the seas to feed the
 farms,"
says fisheries specialist Daniel
 Pauly of the University of British Columbia. He presented a study
showing farming carnivorous species
 like salmon, shrimp and tuna are contributing to the collapse of the
world's wild fisheries.

 Traditional aquaculture -- in which fish such as carp and catfish eat
plants and organic wastes -- is fast
 being replaced by intensive farming of larger, carnivorous fish,
 which
can demand top dollar in Japan,
 the United States and Europe. A single pound of salmon, or other
fish-eaters such as shrimp, tuna or
 cod, demands two to five pounds of wild-caught fish as feed.

 There are also worrisome trends in Asia, said Pauly, where catfish
 and
carp are being fed fish meal
 and fish oil so they grow faster.

 The impacts on marine ecosystems "are clearly unsustainable," said
Pauly. He said the industry needs
 to wean itself off fish-based feeds, often made from herring,
 mackerel
and sardines.

 One in four fish consumed in the world is now raised on farms, which
play an important role in feeding
 Earth's six billion people.

 Economist Rosamond Taylor, of Stanford University, told the
 conference
she believes aquaculture can
 do more good than harm. But one of the keys will be to become less
reliant on carnivorous species
 and more dependent on vegetarians species, such as shellfish,
 catfish,
carp and tilapia.

 "People should be aware that they are not doing the environment a
favour at all by eating farmed
 salmon," she says.

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