Canada: Strong salmon hearts may hedge against climate change

Posted by CBC: Sharon Oosthoek on April 1st, 2011
CBC: Sockeye salmon with the most arduous spawning journeys have the strongest hearts, an adaptation that may better their odds of surviving projected rises in water temperature, say B.C. researchers. Unlike human weekend warriors who risk heart attack with infrequent strenuous exercise, it turns out sockeye salmon are well adapted to their once-in-a-lifetime return to their natal rivers. British Columbia's Fraser River is home to 100 distinct populations of sockeye salmon, with migration journeys......

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