Detachment single pass. Basic information echidnovye family of the monotreme order. in the same detachment, along with echidnas, there is a platypus. the family contains three genera of real echidnas - presentation Tips on how to make a good presentation presentation or project

Platypus (lat. Ornithorhynchus anatinus)- This is an egg-laying mammal, one of those rare animals that make up the unique fauna of Australia.

The length of its body is about 30 cm, together with the tail - up to 55 cm, the weight of an adult is about 2 kg. Like many other animal species, male platypuses are noticeably larger than females. Squat, with a large tail, something like a beaver, he got his eloquent name thanks to the soft beak, covered with elastic skin.

Its five-toed paws are excellent for both swimming in warm Australian waters and digging. For swimming, he mainly uses his front paws, equipped with characteristic webs.

Platypus- This is a nocturnal animal, and it spends a fairly large part of its life in the water. Its habitat is the shores of lakes and small rivers in eastern Australia. Every year before the mating season (August-November), they fall into a short hibernation for 5-10 days. They mate in the water after a fairly lengthy courtship ritual. Males are polygamous.

The average life expectancy of a platypus in captivity is about 10 years, life expectancy in the wild is still unknown. Some time ago, they were the object of a wide trade, and their unique fur was the object of hunting, but at the beginning of the last century, the Australian government issued a decree banning hunting for them.

Today, this species is no longer threatened with extinction, but the pollution of their natural habitat and the gradual industrialization of the sparsely populated areas of Australia are doing their job: platypuses are gradually becoming smaller and smaller.

In Australia, there are special reserves specially equipped for their safe living. The most famous among them are Hillsville and West Burley.

Only males are known to have venomous spurs on their hind legs. The poison contained in these spurs can cause severe pain to a person and kill a medium-sized animal, such as a dog.

The main sign of mammals, which include the platypus, is the presence of mammary glands in animals, with the help of which they feed their offspring with milk. Platypuses do not have nipples, but there are glandular areas of the skin that are able to secrete milk through the pores (milk is high in fat, sugar and proteins).

The female "brings" two or three eggs, rich in yolk, leathery, with a soft shell. She lays eggs deep in her hole, after 10 days the cubs hatch, which feed on milk, through the modified sweat glands of the female. As mentioned above, the female does not have nipples, so it flows down the wool, from where the cubs already lick it.

It turns out that the platypus is also unique in that it has as many as 10 sex chromosomes, while other animals have only two. For example, it is known that a person's gender is determined by a combination of chromosomes X and Y. If XX, then it turns out to be a girl, if XY is a boy. Sex is determined in almost the same way in birds, only the chromosomes are called differently Z and W. But in platypuses, a male is born with a combination of XYXYXYXYXY, and a female is XXXXXXXXXX. For the entire animal world, this is simply unique.

By the beak it can be said that it is a relative of the duck, by the hairline it is closer to the bear, by the tail it can be attributed to beavers, and the webbed feet are more reminiscent of the feet of an otter.

And so far, evolutionists have not found an explanation for the origin of platypuses, one thing is clear - this is an animal creation of hands not from this world.

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The platypus is the only species of the monotreme family of mammals of the same name. The body length of the platypus is 30-40 cm, the tail is 10-15 cm, it weighs up to 2 kg. Males are about a third larger than females. The body of the platypus is squat, short-legged; the tail is flattened, similar to the tail of a beaver, but covered with hair, which thins noticeably with age. In the tail of the platypus, like the Taman devil, reserves of fat are deposited. Its fur is thick, soft, usually dark brown on the back and reddish or gray on the belly. The head is round. Anteriorly, the facial section is elongated into a flat beak about 65 mm long and 50 mm wide. The beak is not hard, like in birds, but soft, covered with elastic bare skin, which is stretched over two thin, long, arched bones. The oral cavity is expanded into cheek pouches, in which food is stored during feeding. At the bottom at the base of the beak, males have a specific gland that produces a secret with a musky smell.

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The platypus feeds on small aquatic animals. He stirs up the silt at the bottom of the reservoir with his beak and catches insects, crustaceans, worms and mollusks. Under water, he feels free, unless, of course, it is possible to catch his breath on the surface from time to time. Diving and rummaging in the silt, he is guided mainly by touch; his ears and eyes are protected by fur. On land, the platypus, in addition to touch, is guided by sight and hearing.

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Platypus burrows are located outside the water, including the entrance, located somewhere under the overhanging shore at a height of 1.2-3.6 m above the water level. Only an exceptionally high flood can flood the entrance to such a hole. An ordinary hole is a semicircular cave dug under the roots of trees, with two or more entrances.

Every year, the platypus goes into a short winter hibernation, after which it has a breeding season. Males and females meet in the water. The male grabs the tail of the female with his beak, and for some time both animals swim in a circle, after which mating takes place.

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The platypus is the only species of the same-named family of mammals of the monotreme order. The body length of the platypus is 3040 cm, the tail is 1015 cm, it weighs up to 2 kg. Males are about a third larger than females. The body of the platypus is squat, short-legged; the tail is flattened, similar to the tail of a beaver, but covered with hair, which thins noticeably with age. In the tail of the platypus, like the Taman devil, reserves of fat are deposited. Its fur is thick, soft, usually dark brown on the back and reddish or gray on the belly. The head is round. Anteriorly, the facial section is elongated into a flat beak about 65 mm long and 50 mm wide. The beak is not hard, like in birds, but soft, covered with elastic bare skin, which is stretched over two thin, long, arched bones. The oral cavity is expanded into cheek pouches, in which food is stored during feeding. At the bottom at the base of the beak, males have a specific gland that produces a secret with a musky smell.

The platypus feeds on small aquatic animals. He stirs up the silt at the bottom of the reservoir with his beak and catches insects, crustaceans, worms and mollusks. Under water, he feels free, unless, of course, it is possible to catch his breath on the surface from time to time. Diving and rummaging in the silt, he is guided mainly by touch; his ears and eyes are protected by fur. On land, the platypus, in addition to touch, is guided by sight and hearing.

The burrows of the platypus are located outside the water, including the entrance, located somewhere under the overhanging shore at a height of 1.23.6 m above the water level. Only an exceptionally high flood can flood the entrance to such a hole. An ordinary burrow is a semi-circular cave dug under the roots of trees, with two or more entrances. Every year, the platypus goes into a short winter hibernation, after which it has a breeding season. Males and females meet in the water. The male grabs the tail of the female with his beak, and for some time both animals swim in a circle, after which mating takes place.

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In total there are 9 presentations in the topic

Looking at its beak, one might think that it is a relative of a duck; by its tail one could classify it as a beaver; his hair is like that of a bear; its webbed feet are like those of an otter; and its claws resemble those of reptiles. Who is this unusual animal? PLATYPUS

At first glance, the platypus resembles a beaver or an otter. It has fins on its front legs, like an otter, but these fins are made of rough skin that extends beyond the edges of the fingers and is immediately retracted at the very fingers so that the platypus can dig into the ground with its claws.

The platypus eats crustaceans, worms, insect larvae; less often tadpoles, mollusks and aquatic vegetation, stirring up silt at the bottom of the reservoir with its beak and catching the rising living creatures. Having collected food in the cheek pouches, the platypus rises to the surface and, lying on the water, grinds it with its horny jaws.

For swimming, the platypus does not use its hind legs, but its front ones. The hind legs act as a rudder in the water, and the tail serves as a stabilizer. The tail also serves the platypus for laying fat reserves, and with it the female closes up, like a trowel, the entrance to the hole when she is about to lay eggs.

Internet resources /2/HOLY_MUDKIPS_by_AngelicNekoMeg umi.jpghttp://fc00.deviantart.net/fs42/f/2009/095/8 /2/HOLY_MUDKIPS_by_AngelicNekoMeg umi.jpg utkonos.htmlhttp://funzoo.ru/amazing/261-dikovinnyjj- utkonos.html