Snappy newsletters. Simple Facebook sharing. Spirited comments. Sweet features are waiting… GET THEM NOW!

Hot on Facebook
Guy Buys $123 Safe on eBay, Finds $26,000 Inside Seller tries to get half the cash back, fails »

Salmon Made to Bear Trout

Success shows sterile animals could become surrogates for extinct species

By Jonas Oransky,  Newser Staff

Posted Sep 14, 2007 6:36 PM CDT

(Newser) – Cue the world’s most peculiar baby announcement: Masu salmon have produced rainbow trout offspring, with an assist from scientists that could lead to the preservation of rare fish species. Trout sperm stem cells had already been injected into salmon embryos to produce salmon with trout sperm; now the same early sperm cells have been used to produce female salmon with trout eggs, Nature reports.

Eggs can be extremely difficult to preserve; hence the importance of being able to produce viable trout eggs from sperm stem cells. Scientists also struck gold by using otherwise sterile salmon, ensuring a high success rate in the engineered breeding. The research demonstrates a remarkably high genetic flexibility among the fish—one that bodes well for their endangered relatives.

Graphic shows surrogate broodstocking technique used to produce a rainbow trout from sterile salmon; 2c x 3 1/2 inches; 96.3 mm x 88.9 mm
Graphic shows surrogate broodstocking technique used to produce a rainbow trout from sterile salmon; 2c x 3 1/2 inches; 96.3 mm x 88.9 mm   (Associated Press)
Damian Wilmot, of South Range, Wisconsin, holds a rainbow trout he caught while fly fishing on the Brule River on opening day of Wisconsin's inland fishing season.
Damian Wilmot, of South Range, Wisconsin, holds a rainbow trout he caught while fly fishing on the Brule River on opening day of Wisconsin's inland fishing season.   (KRT Photos)
Bob Daniel pulls in a rainbow trout near the headwaters of the Missouri River in Montana in September 2002.
Bob Daniel pulls in a rainbow trout near the headwaters of the Missouri River in Montana in September 2002.   (KRT Photos)
« Prev« Prev | Next »Next » Slideshow
To report an error on this story, notify our editors.
A snapshot of the day's best news stories.
 
COMMENTS
Be the first to comment on this story.

More Newser Stories

Polluted Fish Swamp Great Lakes

Why I Finally Love Farmed Fish

Test Finds Mercury in Every Fish

Paris Anglers Again Catch Salmon in Seine

Eggs Screen Sperm for DNA Quality: Scientists


NEWS FROM OUR PARTNERS
Other Sites We Like:   24/7 Wall St.   |   Betty Confidential   |   BuzzFeed   |   Cracked   |   Fark   |   Timelines   |   The Frisky   |   Geek Sugar   |   NewsOne