FDA Closer To Approving Biotech Salmon

An anonymous reader writes with a story about the possibility of genetically engineered salmon showing up on your table. "A controversial genetically engineered salmon has moved a step closer to the consumer's dining table after the U.S. Food and Drug Administration said Friday the fish didn't appear likely to pose a threat to the environment or to humans who eat it. AquAdvantage salmon eggs would produce fish with the potential to grow to market size in half the time of conventional salmon. If it gets a final go-ahead, it would be the first food from a transgenic animal - one whose genome has been altered - to be approved by the FDA."

Comments

"didn't appear likely to pose a threat"

[sugarmotor]

"... didn't appear likely to pose a threat to the environment or to humans who eat it" --- what kind of standard is that?

Then the article states "In a draft environmental assessment, the FDA affirmed earlier findings that the biotech salmon was not likely to be harmful. It said it would take comments from the public on its report for 60 days before making a final decision on approval."

So first poke a bit here and there, find no problems. Then ask the public if they have an idea what could go wrong !!??

Re:"didn't appear likely to pose a threat"

[SuricouRaven]

Caught salmon is expensive, and fish stocks are already in a state of near-crisis. If the choice is between inferior salmon or no salmon at all, make do.

Re:"didn't appear likely to pose a threat"

[climb_no_fear]

The patented fish are diploid and fertile. Female triploid salmon are sterile and cannot cross-breed with wildtype stocks. They are produced by heat shock and other methods (they have to be produced, as they are sterile). The female triploids are produced from the diploids for production purposes, so that if they escape, they cannot reproduce. Triploids even occur naturally but rarely (0.6%) in natural salmon populations.

However, several questions come to my mind:
1.What if someone, sometime, accidentally releases the diploid GMO fish? These fish grow faster than the normal salmon and therefore might have introduce a selective advantage to the introduced genes, even if the original GMO fish are reportedly less fecund.
2. Is the triploid production method 100% effective or might you have 0.1% diploids in there, capable of reproduction?
3. Male triploid salmon do have gonads and are are potentially (even if at a very low rate) slightly fertile. How long until a male escapes? I know that the males appear obviously different than the females (I used to fish for salmon in Canada as a youth) nevertheless, I cite Murphy's Law ...

A bit of reading for the interested:

A simple, clear presentation:
http://www.salmotrip.stir.ac.uk/downloads/SSPOpresentation.pdf

More hardcore molecular biology:
http://www.nature.com/hdy/journal/v104/n2/full/hdy2009108a.html

Re:Did you notice the legalese?

[crmarvin42]

How, pray tell, do you prove a negative? I.e. how do you prove that "GM salmon will never cause harm". If you set the bar impossibly high, then progress will never be made.

As to the labeling, the USDA guidelines for food labeling are designed to keep people honest about the differences in what are essentially commodities. If the USDA believed that there was a significant difference between GM crops and Conventional crops, then they would approve of a labeling initiative. However, one of the requirements for regulatory approval, is demonstrating that the GM crop is substantially similar to the conventional. Therefore, there is no need for a label, unless the label also makes it clear that the implied difference is insignificant. For example, Milk in the US frequently has a label indicating that no rBST was used in its production, but at the bottom of the label is a footnote indicating that their is no difference between milk produced with or without rBST. It is about battling FUD.

I'm currently involved in some FDA filings, and the hurdles for getting a new use approved for something already on the market and GRAS are prodigious, I can only imagine the hurdles that they've forced these GM salmon to jump through to show that the salmon do not appear likely to pose a threat.