Thursday, September 13, 2007

Papa salmon + Mama salmon = Baby trout?

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Captive breeding of endangered fish is difficult, but Japanese researchers have developed a new way for conserve such endangered species!!!

The Tokyo University inventors dubbed their method "surrogate broodstocking." They injected newly hatched but sterile Asian masu salmonwith sperm-growing cells from rainbow trout and watched the salmon grow up to produce trout. DNA testing confirmed that all of the dozens of resulting baby fish were pure trout. Moreover, those new trout grew up able to reproduce.

Now comes Idaho's attempt to prove if the method is really useful in trying to produce the endangered sockeye salmonby using more plentiful trout as surrogate parents.

The new method is "one of the best things that had happened in a long time in bringing something new into conservation biology," said University of Idaho zoology professor Joseph Cloud, who is leading the U.S. government-funded sockeye project. [Quoted from ABC News]

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