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2007-03-08 | permalink
Tough GM salmon lose their nerve in the ’wild’ - life
Some genetically modified fish appear to undergo a personality change when they leave laboratory conditions for a more natural environment, according to new research. Transgenic fish that behave ferociously in a bare tank, appear meek under more natural conditions, meaning it will not be easy for biologists to predict the ecological consequences of escaped GM animals. Salmon genetically engineered to overproduce growth hormone can put on up to 25 times the weight of wild salmon and could provide ”aqua-culturists” with a faster way to raise fish to market size. However, lab tests suggested that transgenic fish are more aggressive predators than wild salmon, raising concerns that they could harm native fish if they escape into the wild.
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News
2007-03-08 | permalink
Tough GM salmon lose their nerve in the ’wild’ - life
Some genetically modified fish appear to undergo a personality change when they leave laboratory conditions for a more natural environment, according to new research. Transgenic fish that behave ferociously in a bare tank, appear meek under more natural conditions, meaning it will not be easy for biologists to predict the ecological consequences of escaped GM animals. Salmon genetically engineered to overproduce growth hormone can put on up to 25 times the weight of wild salmon and could provide ”aqua-culturists” with a faster way to raise fish to market size. However, lab tests suggested that transgenic fish are more aggressive predators than wild salmon, raising concerns that they could harm native fish if they escape into the wild.
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