Evolution in a toxic world

How life responds to chemical threats

Toxic evolution in salamanders?

Contemporary evolution has been documented in a small number of vertebrates in response to human associated environmental pressures (evolution in fish as a result of fishing and chlorinated halogen contamination) and in response to natural conditions (evolution in finches and available food.)

Now, another vertebrate – the salamander –  joins the list (that is sure to grow a la the “tick on the dog” theory, keep looking and you’re sure to find more).  An intriguing study on the salamander response to road runoff by Steven Brady, entitled “Road to Evolution? Local adaptation to road adjacency in an amphibian (Ambystoma maculatum),” published February 2012 describes adaptation and survival in potentially toxic road-side pools.   For more see:



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