With a life expectancy of 36 months, 16,000 number is un believable. Excess of every thing is bad. Again we blame ourself for the damage in California by introducing Nutria cage. Same as red foxes in Australia. Actually we don't make responsible any one as some time these experiments work for us. Some time they don't. The important thing is we should take advantage of these studies to make better eco system. It is possible only by giving awareness and truly act upon the New findings of science