Sticklebacks after Japan’s tsunami: 38% hybrid individuals in 2012, almost entirely freshwater ancestry by 2020
Phys.org reports that species boundaries largely held after the 2011 tsunami, but major reproductive barriers alone could not explain the shift in stickleback ancestry.
TLDR
Phys.org reports that after Japan’s 2011 tsunami, sticklebacks went from 38% hybrid individuals in 2012 to almost entirely freshwater-species ancestry by 2020. Major reproductive barriers alone could not explain the shift, though species boundaries largely held.
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