Sep
15
2007

That’s fishy: Salmon spawn into trout

Start with this: Japanese scientists have taken a salmon similar to this, injected it with rainbow trout sprem-producing cells…
Start with this: Japanese scientists have taken a salmon similar to this, injected it with rainbow trout sprem-producing cells…
This might sound like something out of Jurassic Park, but Japanese fish researchers have successfully made the first step in artificially boosting low numbers of fish populations.

Through the use of what they call “surrogate broodstocking,” they’ve used salmon to breed rainbow trout. The process injects the sperm-growing cells of rainbow trout into newly hatched Asian masu salmon.

End up with this: a biologically correct rainbow trout that is able to reproduce. (Photos courtesy of the U.S. Fish and Wildlife Service)
End up with this: a biologically correct rainbow trout that is able to reproduce. (Photos courtesy of the U.S. Fish and Wildlife Service)
If that’s not creepy or weird enough for you, check out this. The process has also worked with injecting the male cells into female salmon, who then have ovulated rainbow trout eggs. The offspring are “pure” trout and are able to reproduce offspring that genetically match the trout species.

The ultimate goal by the Japanese researchers is to replicate these efforts to be able to boost the low numbers of bluefin tuna. The research will turn to the U.S. next month in Idaho where the process will be reversed, using the plentiful trout population to be surrogates for creating the ever-increasingly rare sockeye salmon population.

What do you think? Is this tinkering too much with nature? Or is this just the technological gimmick we can use to help adjust the balance of nature our technologies of the past have thrown so far out of whack? Share your thoughts here with other Science Buzz readers.

Your Comments, Thoughts, Questions, Ideas

Ben's picture
Ben says:

I love Sushi so this sounds great to me! The more fish, the better!

posted on Mon, 09/17/2007 - 6:44am
Shaun Solomon's picture
Shaun Solomon says:

I have an idea.

Why don't we stop fishing stocks to the brink of extinction? Fish have been making fish the "old fashioned way" for time out of mind.

That hunk of toro on your plate is nothing more than a monument to your hubris. Would I love to eat raw bluefin tuna? You bet your ass I would. Would doing so be a morally bankrupt act in fact of the uncertainty confronting the future of the species?

Yes. It would.

SS

posted on Fri, 12/14/2012 - 5:33pm

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