Thursday, September 27, 2007

Why I love the platypus, part 2.

IT HAS A SIXTH SENSE!!

Image source: nationalgeographic.com

It can see dead platypi...

Ha, no just kidding. Actually, what I mean is, the platypus finds its food underwater by sensing minute electrical charges created when its prey (wormies and such) moves around. When a platypus is under water, its eyes and nose are sealed tight shut, and yet it still can find things and navigate successfully! How does it do this?

WITH ITS BILL!


That's right, that adorable little beak also has a really cool purpose in being on the platy's schnoz. It is in fact an extremely perceptive sensory organ. When platypuses are alive, the bill is very soft and flexible, not at all like the bill of a duck, which it obviously resembles. That weird looking part at the top of the bill, near the face, is meant to protect platy's eyes while it's digging around in the mud.


So, how was this fantastic electric capacity discovered? Well, according to Platypus Guru Ann Moyal, the platypuses secret was found out by a German dude named Henning Scheich (Moyal, pp 188-191). Scheich put a platy into a tank with charged and uncharged batteries. Sure enough, our hero was able to find his way right over to the electrified ones, but couldn't tell where the others were! Click here to see a video of a platy swimming about, just like that.

Ok, so, that's pretty cool. But, even more interestingly, the way the platypus uses electricity is different from the way other animals do it. Example: the sleek and fancy bottlenosed dolphin below:

Basically (very basically, if you want a more scientific or in-depth explanation, go ahead and read Moyal!) the platypus' system is unique because in most animals, the electro-receptors trigger some chemical that tells neurons in the brain "hey, there's something over there. Go check it out." In the platy, the electrical current "excites the nerve fiber directly," (Moyal, 191) without any middle man, as it were.



And that, let's face it is just damn COOL.

Hip, hip, hooray for plugged-in platypi!!!


xo Platygirl


2 comments:

myles said...

truly, truly fascinating! since their bill is so sensitive, i wonder if they freak out when humans/things touch it.

also, platypus-inspired rap? wow.

Platygirl said...

Hey Myles,

In fact, from what I have read, they don't seem to freak out when things TOUCH the bill, but loud noises and intense vibrations really bother them. I read about one instance where platypi were being transported in some sort of rickety truck, and the vibrations actually killed them! :(

Thanks for looking in on the blog!!