THE PHARYNGEAl JAW OF THE MORAY EEL
They
say that the reality overcomes to the fiction. The moray ell that
there have found a few investigators of the University of California
Davis, at least, the retainer. The animal possesses a double system
of jaws, day pupil and boarder. And as the terrifying one 'ally' of
the movie of Ridley Scott, the internal ones they emerge towards out
to hold to the dam. The magazine 'Nature' publishes an article with
the details of the discovery.
It
is how if it was one they alien!
Since
the fish do not have extremities with which to take hold to his dams,
the task of swallowing them is much more difficult than between the
terrestrial animals. Normally, "they" 'suck' them at the
time that they them try to give the second bite, deeper; everything
which turns out to be complicated.
To
facilitate the operation many fish have developed the second system
of jaws. Thus, the exterior jaws are busy with catching to the dams,
whereas the interiores cut and crush the meat. These internal jaws
name 'pharyngeal'.
But
Rita Mehta and Peter Wainwright, of the University of California
Davis, have found something different: a fish that projects his
internal jaws towards out to take hold to the dam; to that, at the
same time, they hold the exterior jaws. Thus, the dam does not have
any way of escaping.
The
fish capable of doing this is not a stranger. It is a question of a
species of moray ell, a predator known and been afraid by the divers
due to his ferocity. The moray ell are fish that live in tropical
waters. His aspect is similar to that of the serpents. They lack
scales and pectoral and pelvic fins, which one allows them to hide in
the orifices of the rocks and corals for, come the moment, to attack
his victims suddenly. They can reach up to three meters of length.
There
are approximately 200 species of moray ell. Mehta and Wainwright have
observed the form in which one of them, the Muraena retifera, capture
his dams. When the moray ell has taken hold to the dam with his
external jaws, a muscular joint projects it was doing out the jaws
faríngeas, that normally are placed behind the cranium. The movement
demands the separation of the external low jaw of Superior, as well
as a gauging of the backbone. On having done it, the 'neck' of the
animal expands extraordinarily. The system of feeding discovered by
the Californian investigators is unique between the vertebrates.
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