How do animals know the world?

25 Nov

animalsIf people are to differentiate odors use their nostrils, which are chemo receptors  the deprived noses octopus, butterflies and other animals found other, often bizarre, ways to perceive the aromas and flavors of the world.

1. Toothbrush for the nose

For example, the whole body of the Oregon shore crab did not find anything that would resemble the nose. However, this does not mean that these arthropods devoid of smell. Crabs are used to distinguish the smell of hair next to the oral cavity, which looks like a toothbrush. When the crab wants to catch the smell, it starts to make undulations claws on the water. Rapid movement down the bristles open, allowing molecules to penetrate between them. Slower upward movement close bristles and drive the smell in chemo sensory cells in the hairs, which give the crab understand how smells around him.

2. Norse language

Snakes, although they have nostrils get a lot more information about smells through language. Wanting to sniff the snake sticks out his tongue out of his mouth in an attempt to catch the odor molecules. When the reptile puts forked tongue back, he neatly fits into two holes in the sky, passing, so the center of the molecule in touch snakes, called the vomeronasal organ or Jacobson.

3. The nose on his feet

In flies chemo sensory hairs are on the lips and on the legs. Therefore, when a fly sits on a sandwich, it is not just resting and actively try it.

Butterflies can also distinguish between odors with your feet, but do not do so because of their own hunger. Females check paws plants before putting eggs: hatched caterpillars do not have to poison poisonous leaves or flowers.

4. Whole body – language

Not only insects can taste the taste of his limbs. The Octopus can have up to 1800 papillae on its eight legs. Each of them is provided with a chemical receptor.

Perhaps the most unusual way to get information about smells developed yellow catfish (Ictalurus Natalis) all of whose body is a long, sticky tongue. On the body of a yellow catfish over 175,000 taste buds, which achieved the highest concentration of the antennae fish. For comparison, a human language is from 2 to 8000 gustatory receptors.

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Posted by on November 25, 2014 in Nature


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