Once on the brink of extinction with only a few fish remaining, Snake River sockeye salmon are regaining the fitness they need to rebuild wild populations. A new analysis shows that naturally spawned offspring of fish saved by a hatchery program are now surviving to return at increasing rate -- high enough to not only sustain the population but also to rebuild it.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...