"A female digger wasp not only lays her egg in a caterpillar so that her larva can feed on it, but carefully guides her sting into each ganglion of the prey’s central nervous system, so as to paralyse it but not kill it. This way, the meat keeps fresh. It is possible the prey might be aware of being eaten alive from inside but unable to move a muscle to do anything about it."

(Richard Dawkins, River Out of Eden)

Is nature really so barbaric and callous? The digger wasp is but one example of the indifference of nature and evolution. But is it all so cruel? The natural world contains astonishing beauty and in this Blog I want to highlight some amazing evolutionary stories and share my awe and passion for one of the most important theories ever conceived by mankind.

Thursday, 11 September 2014

Tusk-less Elephants evolve to avoid poaching

Elephants are loosing their tusks as a rapid and effective evolutionary response to escape slaughter by ruthless and resourceful poachers.



This adaptation has resulted in a rapid increase in the number of tusk-less males in Asia, most notably 90% of Wild Sri Lankan males now do not have tusks.







Although this is a very clever example of evolution, with the genetic mutation preventing the elephants from being killed for their ivory, the tusk less elephants are paying a heavy price for their survival. Elephants use their tusks to dig for food and water, to pick up and move trees and branches, for self defence and for sexual display.

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