Rabbits were first introduced from their native Europe into Australia in 1859. Lacking natural enemies in their new home they rapidly increased in numbers, spreading throughout the island nation. Their excessive grazing devastated many native plants, and they outcompeted many native animals as well. To control this menace, the myxoma virus, which infects only rabbits, was introduced from South America in 1950. In short order it reduced the rabbit population by an estimated 99%. However, after a few years the virus ceased to be an effective control of rabbit numbers. Closer examination indicated that, not only had the rabbits become more resistant to the virus, but the virus had also become less virulent. How would you describe this change in the relationship between the virus and the rabbi

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    adaptive radiation
    resource partitioning
    coevolution
    convergent evolution

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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coevolution
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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