What is the most numerous group of mammals?

Date:

2018-03-23 07:30:11

Views:

894

Rating:

1Like 0Dislike

Share:

Table of contents:

Mammals are the most highly developed and progressive of all the creatures that inhabit the earth. The number of known living species, about 5500, but when you consider those that died – 20 thousand. According to several modern sistematicas the class combines 26-29 units. Representatives of the Mammalia spread everywhere.

The Most numerous orders of mammals are rodents. No joke, but now zoologists described 2277 species, and that more than half of all animals and pervozveri. Rodents have spread across the planet, except Antarctica and some Islands. Not only are they carriers of dangerous diseases and pests, but also a valuable source of furs, fish, and scientific research etc. Their role in ecosystems is ambiguous and multifaceted, while the knowledge of most people confined to “acquaintance” with domestic mice and rats.

the most numerous group of mammals listed in the red book of Belarus

General characteristics

Rodentia – is the Latin name of the most numerous orders of mammals, literally it means “to gnaw, chew”. The characteristic feature of all rodents is a pair of large incisors on the lower and upper jaws, and the diastema, i.e. the disproportionately large gap between them.

Rodents are large. The smallest are Mysovka - 5 cm long, the largest is the capybara (pictured below), to 130 cm, but usually about 50 cm While the tail is often much longer than the body. In some species, e.g., Guinea pigs, he is missing. The shape of the limbs and of the body depends on lifestyle and can be very different. From jumping forms (gerbils) are strongly developed hind legs. Burrowing species have Velikobritanii body shape and have claws on the front limbs (moles, shrews). The planner species (flying squirrel) has lateral skin fold.

Recommended

"Knowledge is light and ignorance is darkness": the value, meaning and alternatives

There are some sayings that would seem to need no explanation, such as “teaching & ndash; light and ignorance – darkness”. But some still do not understand their meaning. But not only for such people is written by our article. I...

What was invented by Mendeleev for the army. The history and fate of the invention

What was invented by Mendeleev for the army. The history and fate of the invention

D. I. Mendeleev was a brilliant Russian scientist-polymath, who made many important discoveries in various fields of science and technology. Many people know that he is the author of “Fundamentals of chemistry" and the periodic law of chem...

The origin of the Slavs. The influence of different cultures

The origin of the Slavs. The influence of different cultures

Slavs (under this name), according to some researchers, appeared in the story only in 6 century ad. However, the language of nationality bears the archaic features of the Indo-European community. This, in turn, suggests that the origin of the Slavs h...

the most numerous group in the class mammals

As already mentioned, a distinctive feature of the representatives of the most numerous group in the class of mammals – this is a pair of incisors on the lower and upper jaws. The incisors are constantly worn down and grow up, they do not have roots. In particular, beavers (in the photo below), the rate of growth reaches up to 0.8 mm per day. Canines are absent and the incisors from the molars separated by a distance – a diastema.

Lifestyle and nutrition

Most Often, the activity rodents showing night or dusk. They live in large groups to hundreds of individuals (naked mole rat), and alone. They have mastered all the living space, including the air.

The bulk of species of the most numerous orders of mammals – that of herbivorous animals. Depending on the time of year and habitat, they eat all parts of the plant: bark, leaves, stems, seeds, roots and fruits. Meet and omnivorous species (dormice, mouse, rat), in the diet consists of insects, worms, small vertebrates, bird eggs.

The Value of rodents

the most numerous group of mammals

More than half of the mammal species on the planet – rodents. It is logical that they play a huge role in ecosystems. Rodents are an important food source for predators, the colony is constantly replenished due to rapid reproduction. Normal rats are ready to mate immediately after the birth of pups, the pregnancy lasts about 25 days.

Representatives of the most numerous orders of mammals is accompanied man since time immemorial, and therefore their importance in our lives quite differently:

  • Research field. Ease maintenance and high breeding rate of the rodents has made suitable animals for laboratory research.
  • Vectors of disease (the bubonic plague, Listeria, toxoplasmosis, encephalitis, etc.).
  • Pets. Many species of rodents contain house: rats, mice, hamsters, chinchilla, Guinea pigs.
  • The source of the fur. Many rodents – commercial animals because of their easy and pleasant to the touch fur (chinchilla, squirrel).
  • Agricultural Pests.

Rodents in the red data book

In Russia in the Red book listed the following rodents: tarbagan, beaver, marmot, Manchurian Zokor, giant mole rat, yellow lemming. These species are endangered and endangered. This is due largely to human activities.

the most numerous group of mammals listed in the red book of Belarus

Sony (the fat Dormouse, the garden and the hazel or Maslovka), common flying squirrel (pictured), the common hamster and spotted suslik – rodents, listed in the red book of Belarus. The most numerous group of mammals in the Republic of Belarus is represented by 26 species, six of them need protection.

In the Ukraine the Red book includes: gopher (Podolsky, European and speckled), mole rat (Bukovina, Podolia, and the white sandy), great jerboa, esurancec ordinary, Mysovka (Strand, Prairie, dark forest), hamster (grey and common), voles (Tatra and snowy), common mole lemming, steppe lemming, Dormouse garden.


Article in other languages:

AR: https://tostpost.com/ar/education/1481-what-is-the-most-numerous-group-of-mammals.html

BE: https://tostpost.com/be/adukacyya/2535-yak-samy-shmatl-k-atrad-mlekakormyachyh.html

DE: https://tostpost.com/de/bildung/2533-welche-die-zahlreichste-gruppe-von-s-ugetieren.html

ES: https://tostpost.com/es/la-educaci-n/2538-cu-l-es-el-m-s-numeroso-cuerpo-de-los-mam-feros.html

HI: https://tostpost.com/hi/education/1481-what-is-the-most-numerous-group-of-mammals.html

JA: https://tostpost.com/ja/education/1480-what-is-the-most-numerous-group-of-mammals.html

KK: https://tostpost.com/kk/b-l-m/2536-anday-e-k-p-sandy-otryady-s-t-orekt-ler.html

PL: https://tostpost.com/pl/edukacja/2539-jaki-jest-najbardziej-liczny-oddzia-ssak-w.html

PT: https://tostpost.com/pt/educa-o/2536-qual-o-mais-numeroso-esquadr-o-de-mam-feros.html

TR: https://tostpost.com/tr/e-itim/2541-ne-en-ok-kadro-memeli.html

UK: https://tostpost.com/uk/osv-ta/2538-yakiy-samiy-chislenniy-zag-n-ssavc-v.html

ZH: https://tostpost.com/zh/education/1584-what-is-the-most-numerous-group-of-mammals.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

Comments (0)

This article has no comment, be the first!

Add comment

Related News

Language development: the caress is...

Language development: the caress is...

What do you have of a noun weasel? Someone — with a small and fluffy animal of prey, the other — with positively colored emotions and actions, with tenderness and warmth. What is most interesting – and the first ...

The Armenian genocide

The Armenian genocide

the Armenian Genocide was organized in 1915, those areas of the country, over which ruled the Ottoman Empire. Quite often this period in Armenian history is called the Great Crime. it is believed that the Armenian genocide was car...

Sodium fluoride and dentistry

Sodium fluoride and dentistry

fluoride is often used in medicine and in other areas. Itself fluoride – substance in the gaseous state, so a source of fluoride, which are fluoride-fluoride with various substances, including metals. Some of these compounds...

What is the main Cathedral of the Moscow Kremlin?

What is the main Cathedral of the Moscow Kremlin?

Moscow Kremlin - the most valuable architectural ensemble not only in Russia but also throughout Europe. It is located on the banks of the Moscow river, in the heart of the Russian capital. The main Cathedral of the Moscow Kremlin...

Sulfuric acid and its use

Sulfuric acid and its use

Sulfuric acid is one of the most famous and common chemical compounds. this is Explained primarily by its distinct properties. Its formula is H2SO4. It is a dibasic acid, having a higher oxidation state of sulfur is +6. Under norm...

Iron the density of iron, its properties

Iron the density of iron, its properties

iron man has a long history. Metal ores are pretty popular. The content of iron in the earth's crust is 4.1%, i.e., in this parameter it is on the second place among metals and fourth among all elements. There is therefore nothing...