Just word of caution: not any snail could be asked to show their horns. It may happen that in response to you trickle of caustic liquid. Some snails should not touch at all: they are covered with toxic slime. There are among them and who are able to bite, prick or scratch. In short, the cochlea, a snail strife.
By the way, "horn" snail - are the eyes that can distinguish not only the degree of intensity of illumination, but also objects to a distance of 1 cm, and a pair of head tentacles relevant organs of touch. Snails also have a well-developed chemical sense, or sense of smell. Authority of the feelings are not only the end caps of tentacles, but the whole front of the body skin.
Snails are gastropods. On the ventral side of her leg is located. Most often it is used to crawl and then supplied sole. In a magazine I saw an interesting photo: a snail crawling across a razor blade. To demonstrate this focus has helped her mucus that protects the soles of soft snails feet from cuts.
The mechanism by which snails crawl, interested engineers. They hope that they will be able to construct a similar principle to all-terrain vehicle all-terrain. This machine will overcome and crevices and steep cliffs. It will not stop, no roads.
Known almost ninety thousand different species of snails. Find them in the cities and deserts. In the Sahara, for example, snails caught in places where the temperature in the shade of 45 degrees. There is a snail, living in the water of hot springs. At the same time, they are well tolerated and cold.
Experienced gardener, choosing for themselves on the garden of cabbage, cut one on which see the snail. He knows that this gourmand unerringly finds the best loaf.
In ancient Rome, roast grape snail is considered a delicacy. This is evidenced by the famous naturalist Pliny in his book "Life of Animals". And in our times has not translated connoisseurs of this dish. In different countries there are special farms, which breed grape snails. They are going to export. And in our country is increasing army of fans tender meat snail. The fact that the vitamins it contains 20 times more than in a creamy meat or egg.
Snails serve as food not only to man. Not the last place they occupy in the menu of fish. With the opening of the Caspian sturgeon, for example, found that the contents of their stomachs by 80 per cent consists of mollusks, mainly from the snails.
In ancient times, from the glands of marine snails and extracted substance from which either purple, used for dyeing, as well as in painting and cosmetics. In one gram of purple went ten thousand clams.
On some Pacific islands of rare species of snail shells still play the role of money. They walked on the production of buttons, jewelry. These snails has long been used by natives of islands of Oceania as a tool for drilling holes in wood products, and even stone. 20-30 hours required cochlea, which is well named oyster drill, to bite a hole in the shell oysters, mussels or any other shells.
An interesting application found snails Strophocheilus popelarianus in factories where manufactured cigarettes. The height of the snail shell reaches 14cm. On its strength can be judged from the fact that they are used as a smoothing iron in tobacco leaves.
Representatives of the genus Trochus, living in the Indian and Pacific oceans are of extraordinary beauty pearl shells, which are used in a button industry. A shell of a smaller form trohid Trochus adriaticus - used only for jewelry.
I have a few years ago, a scientist, an expert on snails - malokolog donated a pair of giant snails - two species: Achatina iredalei, Achatina immaculata, - the size of a quail's egg. Then the snails grew. Now the height of their shells up to 8 cm But this is not the limit. Habitat of these snails - tropical and southern Africa.
This viviparous snails. Nesting is over the age of 6-12 months, depending on the species. Despite the fact that these animals are hermaphrodites, egg deposition precedes copulation individuals. Eggs - small white peas - they lay the eggs in a special soil. Egg laying in the 200-250 pieces of them after 5-7 days of the entry of young animals, which immediately begin an independent life. The growth rate is largely dependent on temperature and the availability of calcium. Snails grow throughout life, which lasts 5-10 years.
They are omnivorous in the sense of plant foods. Use it with great relish vegetables, fruit, bread, cereal, plants. They eat a lot and very fast growing.
In nature, adults act as scavengers, eating decaying plant residues, animal wastes. However, the young snails very harmful to cultivated plants by eating the buds of bananas, various fruits, tubers.
Recently I learned that in our country, enterprising people have taken to breed snail not only for the "corner of the living", but to delight gourmet restaurant. Well, to each his own. My snail is know that they are safe. I am for freedom and life sort of miracle of nature! Join!
"ШколаЖизни.ру"
http://animaldin.blogspot.com/
next article:Snail
previous article:How animals see?
No comments:
Post a Comment