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Risks involved with transgenic fish
Date:8/31/2009

example, genetically modified fish survive better when there is a shortage of food, and benefit more than non-transgenic fish from increasing water temperatures.

It is probably due to the fact that genetically modified fish have a greater ability to compete and are better at converting food, says Fredrik Sundstrm.

Natural breeds are under threat

If transgenic fish become established in natural stocks they would be able to outcompete the natural breeds. However, conducting studies in a laboratory environment that imitates nature is complicated, which makes it difficult to predict how escaped transgenic fish affect the natural environment. Fredrik Sundstrm's conclusion is that international consensus is required before commercial farming can be permitted, and that a precautionary principle must be applied.

One option is to farm the transgenic fish on land, which would make escape impossible. At least fertile fish should be kept in a closed system, says Fredrik Sundstrm. As of yet no country has permitted commercial farming of transgenic fish, but several applications for such operations are under consideration by authorities in both the USA and the EU.


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Contact: Fredrik Sundstrom
fred.sundstrom@gmail.com
46-073-408-4922
University of Gothenburg
Source:Eurekalert  

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