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A scientific study published a few months ago reports that the marine stickleback (the ones with the armor plates) came before freshwater sticklebacks (the ones without armor-plating), meaning that this is not an example of the evolution of a new function, but an example of loss-of-function, or what one might term— Evolution News & Views
Finally, we must recall that these three studies focus primarily on the loss of traits ([stickleback] pelvic spines, wing spots, and trichomes).— Evolution News & Views
The treatments killed an estimated 25 million stickleback, along with 80,000 suckers, 450 rainbow trout and 235 silver salmon.— Anchorage Daily News - Alaska News
Three-spined stickleback (Gasterosteus aculeatus).
There are two forms of the stickleback: the oceanic and the freshwater type.— Scientific Blogging

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