By killing big percentages of the largest, sexually mature big-horn sheep or cod, humans can apply a withering selective pressure on huge numbers of animals. But it's not just that overall harvested animal numbers are shrinking — it's that the individuals themselves are shrinking, too, losing an average of 20 percent of their mass over mere decades.
Monday, January 12, 2009
trophy hunting is bad!
Human Hunters Genetically Shrink Their Prey
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