Super-predatory humans
Matt Walker writes a very interesting article in BBC Nature about the question of why animals don’t appear to have evolved defences against us - a natural predatory force, as they do other predator pressures.
Well, a normally reliable response to predation is to get bigger. Than your predator, preferably. For example: Lions, wolves and orca tend to avoid fully grown, fit buffalo, moose and whales respectively.
However, in the human world we have a saying, “the bigger, the better”, and suddenly being large was no longer a defense, but rather an attraction for the up and coming human predator.
The same went for other defensive ornaments - ivory for elephants, (meaty) claws of lobsters and crabs. Their very defenses became their downfall.
Other responses include becoming poisonous - either by producing toxins, or harnessing toxins produced by microbes. But we are nothing if not ingenious, and have learnt to cut out the bad bits.
In short “we hunt on too grand a scale, with too much ingenuity, targeting the biggest animals.”
“Our arrival and technological history has engendered an enormous change in the evolution of most species on Earth,” says Prof Vermeij, of University of California at Davies who has studied the effects of predators on evolution for more than thirty years.
“In evolutionary terms, we leave our prey with nowhere to go. They have no way to defend themselves and simply cannot respond. And that represents a cataclysmic shift for species on this planet, the implications of which, he adds, we have barely begun to understand.”
It is a bit of a “no-shit-Sherlock” situation. Of course nature hasn’t got time to adapt to us. There’s 7 billion of us. What we can do is do better at giving reprieve to some areas of land and sea, to give evolution time to catch it’s breath.
