Homeland of land turtles. Turtle - an ancient reptile

One of the most interesting units The turtle is rightfully considered a reptile. Scientists who studied ancient remains in order to find out how many years she had been living on the planet found that their existence on Earth lasted more than 220 million years. These are rare animals that can live on land and in water. The turtle is a reptile that has 328 species, grouped into 14 families.

Origin of the name

If we consider the Slavic and Latin origin the name of the reptile, it is easy to see the general. Both languages ​​demonstrate in the word a response to appearance: translated from Latin “tile”, “clay vessel”, “brick”; from Slavic - “shard”.

Indeed, many turtles resemble the stone for which the people who gave them this name mistook them. Despite this etymology of the name, it also contains an indication of the unique shape and color of the hard shells.

What do turtles look like?

In the diversity of turtle species, there are common characteristics that unite them into one order.

The main distinguishing feature of the order is the shell, which absolutely all representatives have. It consists of a carapace (dorsal) and plastron (abdominal), connected to each other. This durable device serves, first of all, to protect the animal from enemies. When necessary, the turtle is fully capable of hiding its body and head in it, lowering its upper part and remaining protected from any attack on it.

The shells are covered with hard horny scutes, different in color and shape depending on the species. There are holes into which the paws, head, and tail extend and retract as needed.

The strength of the shell, as studies have shown, is so great that it can withstand a weight exceeding the weight of the animal by 200 times.

Reptiles molt periodically: the old skin peels off from their shell in scales, and the color becomes brighter.

How much does a turtle weigh? Turtle sizes

The turtle is a unique reptile. Some species can reach gigantic sizes - up to 2 meters, and weigh up to a ton. But there are also tiny representatives, whose weight does not exceed 120 grams and size - 10 cm.

Each type of turtle has its own parameters, which we will talk about, characterizing them separately.

Paws

All species have four paws, which can be hidden in the shell if necessary.

The structure depends on the lifestyle and species. Terrestrial animals are distinguished by thickened front paws, suitable for digging soil, and powerful hind paws, which help to move along the surface. The river turtle, which lives in fresh water, has membranes between its toes. The sea turtle, evolving, acquired fins instead of paws, and the front ones are much larger than the back ones.

Tail

Almost everyone has a tail, the length of which depends on the species and lifestyle. If necessary, the tail can be retracted into the shell.

For swimming reptiles, it serves as a kind of rudder that helps maneuver in the water, and is more developed than that of its land-based counterparts.

Head and neck

All turtles have a medium-sized head with a streamlined shape. When danger arises, many representatives of this class hide their heads in their shells. But there are turtles that have a fairly large head and cannot retract it.

Depending on the species, the front of the head can be elongated or flat, but it always ends with the nostrils.

The eyes are also positioned differently: in reptiles living on land, they are directed downward, while in swimming reptiles they are directed much higher. Animals have excellent vision and see this world in color.

Some turtles have quite long necks. In other representatives they are of medium size and are perfectly retracted into the shell if necessary.

Sometimes these animals, sticking their heads out of the water, are mistaken for huge snakes.

In many representatives of the species, the oral part begins with a hard beak-shaped process, with which they easily bite off even the hardest food and are able to catch prey. The edges of these processes can be either sharp or jagged.

But they don't have teeth. The chewing movements that reptiles make are necessary in order to move food into the pharynx. Language also helps them with this.

Despite the lack of teeth, turtles have powerful jaws that can handle almost any food.

Sexual characteristics of a turtle

The sex of turtles is determined by appearance and behavior, since these animals do not have clear genital differences, and it is almost impossible to figure out the sex at first glance. However, males differ from females:

• according to the shape of the shell (in females it is more elongated);
• the lower part of the shell is slightly concave in males, flat in females;
• the tail of males is longer, wider and thicker, it is more curved down;
• according to the shape of the anus;
• in males, the claws of the front paws are slightly longer;
• a small notch in the shell in the tail area is present only in males;
• The behavior of males is characterized by activity.

In some species, gender, in addition to the indicated characteristics, is expressed by the color or shape of the head.

In nature, these reptiles are completely herbivorous, carnivorous and omnivorous. Most eat both plant and animal foods.

Lifespan

On average in wildlife turtles live about 20-30 years. But it depends on the type of reptile. There are centenarians who can reach 200 years of age. As a rule, turtles live longer in captivity, but this also depends on the species and conditions of detention.

Types of turtles

The long stay of representatives of this order on the planet allowed them to divide into 328 species, differing in external characteristics, size, habitat, nutrition and lifestyle.

The classification involves the division of reptiles, depending on how they hide their heads in the shell, into cryptonecks and side-necks. The first group presses their head into the shell by contracting the neck muscles. The second is folded to the side, under one of the front paws.

Another classification is based on the habitat of these reptiles:

• sea ​​turtle - lives in the salty waters of the seas and oceans;
• terrestrial - capable of living both on the surface of the earth and in fresh waters; this variety, in turn, is divided into freshwater and land.

This sea turtle chose the waters of the Atlantic, Pacific and even Indian oceans for its life.

There are two subspecies of these reptiles: Atlantic and eastern Pacific. Its elongated shell can be not only green, but also dark brown with yellow and white stripes or spots.

Reptiles got their name not from their external coloring, but from the color of the meat they ate.

The green turtle is one of the largest species. The length of its shell can reach up to 2 m, and its weight can reach 400 kg.

Young individuals live exclusively in water, where they feed on small fish, mollusks, and jellyfish. Adult reptiles come ashore, where they begin to feed on plant foods, which over time become their main diet.

The tasty meat of these animals was traditionally used for food (they are even called soup animals), which led to a decline in the population. Hunting them is currently prohibited in many countries.

The onset of puberty occurs after 10 years, sometimes much later. Reptiles mate in water, but lay their clutches on the shore, in the same places where their predecessors laid eggs. They dig very large holes in which they place up to 200 eggs. Small turtles, hatching, run towards the water. If they managed to get there, they will spend many years in the ocean, until the moment comes when they themselves have to go ashore to give birth.

If your pet is a sea turtle, keep in mind that caring for it at home is much more difficult than for land-based ones, since you need to have spacious aquariums with water adapted for the reptile.

Another name for this species is Chinese trionix, or Chinese tortoise. The Far Eastern turtle prefers to live on the silt-covered bottom of large lakes and rivers with gently sloping overgrown banks. Their habitat is Primorye, the southern part of the Amur in Russia, Vietnam, China, Japan, Korea and Taiwan.

The Far Eastern turtle is green-brown or green-gray in color with pale yellowish spots. Its usual size is about 30 cm, but there have been specimens up to 40 cm and weighing more than 4 kilograms. They have fleshy lips covering strong jaws.

The shell of these animals in young individuals has a rounded shape. It becomes flatter with age. Distinctive feature young individuals have a bright orange abdomen, the color of which becomes pale over time.

The Chinese turtle is capable of hunting both in water and on land, where it goes out to bask in the sun. These reptiles hibernate by burying themselves in the mud.

The diet of these predatory reptiles consists of fish, shellfish, amphibians and insects. The Far Eastern turtle can guard its prey for a long time by burying itself in the mud.

At the age of 6-7 years, the Far Eastern tortoise becomes sexually mature. Usually in July they lay eggs at a short distance from the water. During the season, the female makes several clutches, from which about 70 turtles emerge. After 1.5 - 2 months, babies appear, the size of which is no more than 3 cm. They quickly run to the water and hide for a long time in coastal vegetation and between stones.

The Far Eastern tortoise has a fairly aggressive character and can strongly bite its attacker.

If this turtle lives in a house from an early age, it easily gets used to a person and can even feed from his hands.

Living in the southeast of Eurasia, this steppe loves damp areas in river valleys, foothills, agricultural lands, sandy and clay semi-deserts. Animals dig holes or occupy empty ones.

Observations shed light on how many years this turtle lives. It turns out that life expectancy depends on its activity. At home in a closed terrarium, it is unlikely to overcome the 15-year mark, when in the wild it can live for 30 years. Not in a natural environment, the Central Asian tortoise, even if care and nutrition are as close as possible to natural ones, lives much shorter.

The Central Asian tortoise does not grow more than 20 cm, while males are slightly smaller in size than females.

This steppe turtle hibernates quite early: at the beginning of summer, immediately after laying eggs. This is due to the fact that this particular time in their habitat is the driest. Lack of food in sufficient quantity forces them to wait out in a state of sleep.

The Central Asian turtle has a very beautiful shell - reddish-olive with dark round spots.

Reptiles of this species are dark brown, dark olive, almost black in color with small yellow streaks or spots. Distinctive feature is a very long tail and no beak.

The habitat of these animals is unusually wide: they can be found in the European part of Russia, the Caucasus, Bashkiria, Kazakhstan, Turkmenistan and even in northwest Africa. They prefer forest, forest-steppe and steppe areas, the banks of slow-flowing rivers, and wetlands.

These reptiles are found in mountainous areas at altitudes of up to 1500 meters above sea level.

It is impossible to say that this is an aquatic turtle. She prefers to get out onto land quite often and moves relatively quickly along it.

The diet of representatives of this species is unusually wide: it eats worms, mollusks, small reptiles, fish, and chicks of waterfowl. She does not disdain carrion.

Depending on the region, they become sexually mature at the age of 5-9 years. Eggs are laid near water bodies. The sex of the offspring depends on temperature. When the levels are high, females are born, while when they are low, males are born.

Unfortunately, the clutches are attacked by predators (foxes, raccoons, otters, crows), who are happy to feast on both the eggs themselves and the small turtles.

Another name for these reptiles is directly related to their habitat - the Seychelles giant tortoise. This terrestrial animal is endemic to Aldabra Island.

The size of the shell of this large animal reaches a meter. It flaunts clearly defined shell segments, has fairly large legs that help it move on land, and a relatively small head.

Given its size, the reptile is a herbivore. Everything a turtle eats grows around it. She happily eats all low-growing bushes and grass.

There are currently only 150,000 left in the wild, so the reptile is protected. On the island where they live, not only hunting is prohibited, but also any economic activity.

Reptiles lay eggs from May to September, and they are able to regulate the population size: if there was not enough food, their clutches will contain only 5-6 eggs.

He is the largest representative of his squad. These reptiles live only on the Galapagos Islands and are not found anywhere else. Their weight sometimes exceeds 400 kg, and the length of the shell reaches 2 m. They have fairly muscular paws, which have sharp claws (5 on the front and 4 on the hind). In case of danger, they pull their head and limbs into the shell.

At the end of the 20th century, the population of these animals decreased to 3,000 individuals, which became critical, so a decision was made to protect the reptiles.

Currently, there are two varieties of these reptiles, differing in habitat (relatively small individuals live in arid areas), size, color and shape of the shell.

Scientists actively researching the life of Galapagos endemics have identified Interesting Facts about turtles of this species: for example, what they can eat poisonous plants, which no animal eats. In some cases, they are able to live for several months without food or fresh water.

Mating and laying of eggs of these giants occurs at any time of the year, but peaks of activity occur in certain seasons.

This reptile is also called the yellow-bellied reptile. The water turtle received its original names solely for the bright accents in its color: there is a red spot on its head, and its abdomen is yellow.

There are 15 subspecies of these reptiles belonging to the American freshwater family.

The size of the animal depends on the subspecies and gender - from 18 to 30 cm, with males slightly smaller than females.

Its main habitat is America, but its presence is also noted in Europe (Spain and England), northern Africa, and Australia. For their life, they choose swampy areas with low banks, since this river turtle loves to get ashore and bask in the sun.

In Australia, the water turtle is considered a pest and its numbers are controlled.

The water turtle lays its eggs on land, where it digs out a spherical nest and places up to 20 eggs there. Reptiles of this species do not care about their offspring.

The water turtle feeds on insects, small fish, and worms. She chews her food with her head completely immersed in the water. If you have a water turtle living in your home, care and feeding should be consistent with its natural needs.

We have long found out how many years a turtle lives at home. If the maintenance and care are natural, it can easily live for half a century. In nature, this age is somewhat less.

One of the subspecies is the yellow-eared turtle. As the name suggests, its main decoration is the bright color of the shell and the yellow spot in the area of ​​the auricle.

The yellow-eared turtle differs from its red-eared counterparts only in color. Their habitat, diet and reproduction are identical.

The yellow-eared turtle thrives at home. Maintenance and care do not require much time and do not cause much trouble for the owners.

Small in size (the maximum length of the shell is no more than 13.5 cm), the reptile has chosen the American continents.

Its dirty-brown shell has three longitudinal ridges, and light stripes are visible on its head.

It lives in small rivers with silted banks, where this river turtle hunts and lays eggs.

When the water temperature drops below 10 degrees, the reptile begins to dig a hole for hibernation. Unlike many species, muskies can sleep in groups. The period of sleep itself depends not on the season, but on the temperature: in the southern regions, where there are no low temperatures, this reptile is active throughout the year and does not hibernate.

If you have a musk turtle in your home, keeping it alone is not advisable. It is better to have several individuals at once. This will affect how many years the turtle lives at home.

The musk turtle is quite common in home aquariums; keeping, feeding and caring for it does not require much effort.

Where do turtles live? Habitat

Reptiles of this order live on almost all continents of the world. The only exceptions are Antarctica and desert areas, the climate of which is completely unsuitable for these animals. Any coast - be it the oceans or small rivers and lakes - can boast of its own view, or even more than one.

They find food almost everywhere: it can be insects, worms, small fish, crustaceans and vegetation. Its unpretentiousness in food makes the reptile able to survive in almost any place.

Even in reservoirs located in large cities, you can find these animals. They go ashore to bask in the sun. During the breeding season, you can come across clutches of their eggs on deserted beaches.

A turtle is a reptile that has long settled in homes, becoming a favorite pet. Home care for this reptile is insignificant, so many people choose them for their home.

How many years a turtle lives at home, first of all, depends on the species, age of the animal that comes to you, and the conditions in which it will live. Comfortable existence and feeding as close as possible to natural habitat conditions will allow your pet to live long enough. If the turtle feels good in the house, and the maintenance and care are appropriate, then it can live up to 50 years.

Which turtle is best for a home?

Usually river reptiles become pets. A river turtle, once at home, adapts quite quickly. Its maintenance does not require an overly spacious aquarium, but it is very important to equip it correctly, creating a swimming area and dry land for your pet to go to when necessary.

• water (red-eared and yellow-eared);
• European (swamp);
• Central Asian (steppe);
• Far Eastern;
• musk turtle.

Keeping sea turtles in home aquariums is very problematic. Even young individuals require special water, reminiscent of oceanic water. And for older ones, very spacious tanks are needed, since in limited spaces the animal will not be able to be active enough, and this also determines how many years a turtle lives at home.

Before purchasing an animal, get to know useful information about him. Temperature, nutrition and care, activity and the ability to live alone or in pairs are very important for the reptile.

What does a turtle prefer to eat at home?

If you have a pet turtle, its nutrition, maintenance and care should resemble its natural look life. Before adopting a pet, study what it eats in nature and during what periods it is active.

Young individuals, as a rule, consume 70 percent of live food (food worms, insects, small crustaceans). Growing up, they switch almost entirely to plant foods. Suitable for feeding:

• vegetables and their tops (tomatoes, peppers, pumpkin, carrots, and occasionally cucumbers);
• berries (strawberries, wild strawberries, watermelon);
• fruits (plums, peaches, apples, bananas).

Do not overfeed the animal! If you see that there is food left after feeding, be sure to remove it and subsequently reduce the portions.

If you have a turtle at home, caring for it must necessarily include cleaning the aquarium. Be especially attentive to leftover food: stale food can lead to intestinal upset, which will affect how many years a turtle lives at home.

• Representatives of this order of amphibians can boast that they have left their mark on the history of astronautics. Two individuals of the Central Asian tortoise species were the first among animals to fly around the Moon and return alive to Earth.
• The meat of these animals is a delicacy. But some species are not recommended for consumption. This happens because this turtle sometimes eats poisonous mushrooms or jellyfish. They do not eat the meat of box turtles, leatherback turtles and hawksbill turtles.
• Reptiles of this order can swim well and move on land. But the European tortoise can also be called a jumping tortoise. She can jump into the water from three-meter mountain ledges.
• Turtles have their own long-lived lives. So in 2006, the oldest turtle, Advaita, died, whose age, according to experts, was more than 150 years.
• Many people wonder how long a turtle can live without food. In the natural environment, determining this time is quite difficult. But for pets, this is a maximum of 3 weeks, taking into account the fact that the animal is hibernating. In nature, the sleep period can last several months. It is believed that at this time the reptile does not eat at all.
• During the period of courtship and mating, sea turtles stick their heads out of the water and make drawn-out sounds similar to howls.

A turtle is an animal of the chordate type, class Reptiles, order Tortoise (Testudines). These animals have existed on planet Earth for more than 220 million years.

The tortoise got its Latin name from the word “testa”, meaning “brick”, “tile” or “clay vessel”. The Russian analogue came from the Proto-Slavic word čerpaxa, which in turn came from the modified Old Slavic word “čerpъ”, “shard”.

Turtle - description, characteristics and photographs

turtle shell

A characteristic feature of turtles is the presence of a shell, which is designed to protect the animal from natural enemies. turtle shell consists of a dorsal (carapace) and abdominal (plastron) part. The strength of this protective cover is such that it can easily withstand a load exceeding the weight of the turtle by 200 times. The carapace consists of two parts: internal armor made of bone plates, and external armor made of horny scutes. In some species of turtles, the bony plates are covered with thick skin. The plastron was formed due to the fused and ossified sternum, clavicles and abdominal ribs.

Depending on the species, the size and weight of the turtle vary significantly.

Among these animals there are giants weighing more than 900 kg with a carapace size of 2.5 meters or more, but there are small turtles whose body weight does not exceed 125 grams and whose shell length is only 9.7-10 cm.

Head and eyes of a turtle

Turtle head It has a streamlined shape and medium size, which allows you to quickly hide it inside a safe shelter. However, there are species with large heads, which fit poorly or not at all into the shell. In some representatives of the genus, the tip of the muzzle looks like a kind of “proboscis” ending in nostrils.

Due to the peculiarities of the way of life on land, the turtle's eyes look at the ground. In aquatic representatives of the order they are located closer to the top of the head and directed forward and upward.

The neck of most turtles is short, however, in some species it can be comparable to the length of the carapace.

Does a turtle have teeth? How many teeth does a turtle have?

To bite and grind food, turtles use hard and powerful beak, the surface of which is covered with rough bumps that replace teeth. Depending on the type of food, they can be razor-sharp (in predators) or with jagged edges (in herbivores). The ancient turtles that lived 200 million years ago, unlike modern individuals, had real teeth. The tongue of turtles is short and serves only for swallowing, and not for capturing food, so it does not stick out.

Limbs and tail of turtles

A turtle has a total of 4 legs. The structure and functions of the limbs depend on the animal’s lifestyle. Species that live on land have flattened forelimbs adapted for digging and powerful hind legs. Freshwater turtles are characterized by the presence of leathery membranes between the toes on all four paws that facilitate swimming. In sea turtles, during the process of evolution, the limbs have been transformed into a kind of flippers, and the size of the front ones is much larger than the back ones.

Almost all turtles have a tail, which, like the head, is hidden inside the shell. In some species it ends in a nail-shaped or pointed spine.

Turtles have well-developed color vision, which helps them find food, and excellent hearing, which allows them to hear enemies at a considerable distance.

Turtles molt, like many reptiles. In land species, molting affects the skin in small amounts; in aquatic turtles, molting occurs unnoticed.

During molting, transparent shields peel off from the shell, and the skin from the paws and neck comes off in rags.

The lifespan of a turtle in natural conditions can reach 180-250 years. When winter cold or summer drought sets in, turtles go into hibernation, the duration of which can exceed six months.

Due to the weakly expressed sexual characteristics of turtles, it is very difficult to determine which of the animals is a “boy” and which is a “girl”. However, if you approach the issue carefully, having studied some of the external and behavioral characteristics of these exotic and interesting reptiles, then finding out their gender will not seem such a difficult matter.

• Carapace

In the female it usually has a more elongated, elongated shape compared to the male.

• Plastron (lower part of the shell)

Turn the turtle over and look at it carefully - the shell on the side of the abdomen closer to the anus in female turtles is flat, in males it is slightly concave (by the way, this nuance facilitates the mating process).

• Tail

Male turtles have a tail that is slightly longer, wider and thicker at the base, most often curved down. The tail of the “young ladies” is short and straight.

• Anal opening (cloaca)

In females it is located somewhat closer to the tip of the tail, shaped like an asterisk or a circle compressed on the sides. In male turtles, the anus has a narrow oblong or slit shape.

• Claws

In almost all species, except the leopard tortoise, the claws of males on the forelimbs are longer than those of females.

• Notch at the tail

Males have a V-shaped notch in the back of their shell, which is necessary for turtles to mate.

• Behavior

Male turtles are often more active, and in mating season They are distinguished by their aggressiveness towards their opponent and towards the “lady of their heart”, they chase her, trying to bite her, and nod their heads funny. At this time, the female can calmly watch the “courtship”, hiding her head in her shell.

• Some species of turtles have specific differences between females and males, such as color, size or head shape.

Types of turtles - photos and descriptions

The tortoise order consists of two suborders, divided by the way the animal retracts its head into its shell:

• Hidden-necked turtles, folding their necks in the shape of the Latin letter “S”;
• Side-necked turtles, hiding their head towards one of their front legs.

According to the habitat of turtles, there is the following classification:

• Sea turtles (live in seas and oceans)
• Terrestrial turtles (live on land or in fresh water)
  • Land turtles
  • Freshwater turtles

In total, there are more than 328 species of turtles, forming 14 families.

Types of land turtles

• Galapagos tortoise (elephant) (Chelonoidis elephantopus)

The length of the shell of these turtles can reach 1.9 meters, and the weight of the turtle can exceed 400 kg. The size of the animal and the shape of its shell depend on the climate. In arid areas, the carapace is saddle-shaped, and the limbs of the reptile are long and thin. The weight of large males rarely exceeds 50 kg. In a humid climate, the shape of the dorsal shell becomes dome-shaped, and the size of the animal increases significantly. The elephant tortoise lives in the Galapagos Islands.

• Egyptian tortoise (Testudo kleinmanni)

a small representative of land turtles. The size of the carapace of males barely reaches 10 cm, females are slightly larger. The color of the shell of this type of turtle is brown-yellow with a small border along the edges of the horny scutes. The Egyptian tortoise lives in northern Africa and the Middle East.

• Central Asian tortoise (Testudo (Agrionemys) horsfieldii)

a small reptile with a shell size of up to 20 cm. The carapace has a rounded shape and is colored yellowish-brown with darker spots of uncertain shape. These turtles have 4 toes on their forelimbs. The most popular type of turtle for home keeping, lives about 40-50 years. Lives in Kyrgyzstan, Uzbekistan, Tajikistan, Afghanistan, Lebanon, Syria, northeastern Iran, northwestern Pakistan and India.

• Leopard tortoise (panther tortoise) (Geochelone pardalis)

The carapace length of this turtle exceeds 0.7 m, and the weight can reach 50 kg. The shell of this type of turtle is high and dome-shaped. Its color has sandy-yellow tones, on which in young individuals a spotted pattern of black or dark brown is clearly visible, disappearing as they grow older. This species of turtle lives in African countries.

• Cape speckled tortoise ( Homopus Signatus)

the world's smallest turtle. The length of its carapace does not exceed 10 cm, and its weight reaches 95-165 grams. Lives in South Africa and southern Namibia.

Types of freshwater turtles

• Painted turtle (decorated turtle) (Chrysemys picta)

A rather small species of turtles with individual sizes ranging from 10 to 25 cm. The upper part of the oval dorsal shell has a smooth surface, and its color can be either olive green or black. The skin has the same color, but with different stripes of red or yellow tone. They have leathery membranes between their toes. Lives in Canada and the USA.

• European marsh turtle (Emys orbicularis)

The size of individuals can reach up to 35 cm and weight 1.5 kg. The smooth, oval carapace is movably connected to the plastron and has a slightly convex shape. Representatives of this species have a very long tail (up to 20 cm). The color of the upper shell is brown or olive. The skin color is dark with yellow spots. The turtle lives in European countries, the Caucasus, and Asian countries.

• Red-eared turtle (yellow-bellied turtle) (Trachemys scripta)

The shell of these turtles can be up to 30 cm long. Its coloring is bright green in young individuals, over time it turns into yellow-brown or olive. Next to the eyes on the head there are two spots of yellow, orange or red. This feature gave the species its name. lives in the USA, Canada, northwestern South America (northern Venezuela and Colombia).

• Snapping turtle (biting) (Chelydra serpentina)

A characteristic feature of a turtle is a cross-shaped plastron and a long tail, which is covered with scales with small spines, as well as the skin of the head and neck. The shell dimensions of these turtles can reach 35 cm, and the weight of an adult animal can be 30 kg. The snapping turtle waits out unfavorable conditions in hibernation. This turtle lives in the USA and southeastern Canada.

Types of sea turtles

• Hawksbill turtle (true carriage) (Eretmochelys imbricata)

The carapace of these turtles is heart-shaped and up to 0.9 m in size. The upper layer of the shell is painted in brown tones with a pattern of multi-colored spots. In young individuals, the horny plates overlap each other like tiles, but as it grows, the overlap disappears. The front flippers of the animal are equipped with two claws. Hawksbill lives both in latitudes of the northern hemisphere and in southern countries.

• Leatherback turtle (Dermochelys coriacea)

this is the largest turtle in the world. The span of its front flipper-like limbs reaches 2.5 meters, the mass of reptiles is more than 900 kg, and the dimensions of the shell exceed 2.6 m. The surface of the upper shell is covered not with keratinized plates, but with dense skin, for which the species received its name. The turtle lives in tropical areas of the Atlantic, Pacific and Indian oceans.

• Green turtle (soup turtle) (Chelonia mydas)

The weight of the turtle ranges from 70 to 450 kg, and the size of the shell is from 80 to 150 cm. The color of the skin and carapace can be either olive with a green tint or dark brown with various spots and stripes of white or yellow. The turtle's shell is short and oval in shape, and its surface is covered with large horny scutes. Due to the large size of their heads, these reptiles do not hide their heads inside. The green turtle lives in tropical and subtropical waters of the Atlantic and Pacific oceans.

In the family of land turtles (lat. Testudinidae), there are 10-13 genera (depending on taxonomy), including about 40 species.

About 20 species of land turtles live in Africa and 8 species in Southeast Asia. Several species can be found in Southern Europe, 3 types – in South America and 2 species – in Northern. Most species of land turtles inhabit deserts, steppes and savannas. Some species can also be found in wooded areas.

Among land turtles there are both giant forms, reaching a length of a meter or more, and small animals 10-12 cm long.

The shell of these terrestrial animals is high, less often flattened. The head and thick columnar legs are covered with scutes and scales.

All land turtles are slow and clumsy. Unlike freshwater turtles, when in danger, they do not flee, but only use a means passive protection- shell.

In the wild, land turtles mainly feed on a variety of green vegetation, only occasionally diversifying their diet with invertebrates. If their diet includes succulent vegetation, they can go without water for a long time, but if possible, they drink with pleasure.

The central genus of the land turtle family is the land turtle (Testudo). These turtles are widely distributed in Africa, South America, southern and western Asia, and southern Europe. Apparently, the most ancient species can be considered the once numerous giant tortoises, rare specimens of which can still be found today in the Galapagos and Seychelles Islands.

Lives on the Galapagos Islands (Testudo elерhantopus). Adults weigh about 100 kg, and the weight of individual giants can reach 400 kg.

Testudo elephantopus

Various geographical forms gigantic turtle(Testudo gigantea) 200 years ago were found in the Seychelles, Madagascar, on the island. Rodriguez and on about. Isabela. Unfortunately, fishing for these majestic animals has led to their extinction on most of the islands. Today they can only be found on Aldabra Atoll.

Both Testudo elephantopus and Testudo gigantea are unsurpassed giants of the turtle world, however, other representatives of this genus can have quite impressive sizes. We are talking about African spurred(Testudo sulcata) and panther(Testudo cardalis) turtles, whose shell length can reach 70 cm.

Leopard, or panther, tortoises come from the savannahs of the South and East Africa. Their habitats are characterized by a large number of varied vegetation, where they prefer grassy areas covered with low bushes. These turtles are capable of climbing mountains to heights of up to 2000 m above sea level. The main background of the carapace of panther turtles is sandy yellow. Juveniles have a dark brown pattern on the carapace scutes.

The African spurred tortoise is often confused with the Mediterranean spurred tortoise. The latter is not only much smaller in size, but also has completely different requirements for the habitat. The length of the African spurred tortoise can reach 83 cm, and the maximum recorded weight is 105 kg. You can only keep a Spurred Tortoise at home if you live in a hot, dry climate and can provide the animal with a large area to graze outside of your home. This species of turtle digs huge holes and can dig under fences and house walls. The spurred tortoise requires a lot of fresh vegetation as food.

Another rather large turtle (shell length can reach 50 cm) with magnificent coloring - Madagascar radiated tortoise(Testudo radiata) Its high, dome-shaped black carapace is decorated with bright yellow rays stretching to the edges of the scutes. In addition to this species, Madagascar is inhabited by Madagascar beaked tortoise(Testudo yniphora) and a flat turtle (Testudo planicauda), characterized by its miniature size (shell length no more than 12 cm). The same tiny South African knobby turtle(Testudo tentoria). The southern regions of the mainland are also inhabited by two larger species - beaked turtle(Testudo angulata) and geometric turtle(Testudo geometrika).

The northern regions of Africa cannot boast the same species diversity of turtles as the southern ones. In North Africa, only two species of the Testudo genus are found: the Mediterranean tortoise (Testudo graeca) and the Egyptian tortoise (Testudo kleimanni).

Mediterranean turtle in addition to North Africa, it is found in Asia Minor, southern Spain, the countries of the Eastern Mediterranean, the east of the Balkan Peninsula, and Iran. Prefers to live in semi-deserts, steppes, on mountain slopes and in dry sparse forests. The shell of the Mediterranean tortoise is convex, yellow or olive in color with dark spots on the scutes. There are spurs on the hips. The length of the shell can reach 35 cm. The basis of the diet is various vegetation, but if possible, it also eats invertebrates. The Mediterranean tortoise is often kept at home. It is relatively unpretentious and, with plenty of warmth and proper feeding, lives in captivity for decades.

(Testudo kleinmanni) lives in the deserts of Northeast Africa. The length of the carapace of this baby is only about 12 cm. The carapace is yellow with dark spots. When in danger, the “Egyptian” quickly buries itself in the sand.

Central Asian tortoise(Testudo horsfieldi) lives in the steppes Central Asia, including Afghanistan and Pakistan, in northwestern India, as well as in the southern regions of Kazakhstan. It can be found in sandy and clayey deserts with thickets of vegetation, on cultivated lands and in river valleys. In foothill areas it can rise up to 1200 m above sea level.

Today, turtle lovers most often find this species. The most important thing when keeping a Central Asian tortoise at home is an abundance of warmth and light. green leaves, edible flowers, vegetables and fruits. With a clear schedule, they quickly get used to the place and time of feeding.

In winter, it is recommended to lay down the Central Asian turtle.

Kinix Turtles(genus Kinichys)live in tropical areas Central Africa. This genus has a very original shell structure: the rear third of the carapace (the lower side of the shell) is connected to the main part by a transverse tendon layer. They use this feature in times of danger as a mechanism to protect the soft, fleshy parts. The largest turtle of this genus, the toothed kinix (Kiniхys erosa), reaches a length of 30 cm. Without experience, it is quite difficult.

Flathead turtles(genus Homophorus) includes 4 species. They live in South Africa, where they are found in semi-deserts and dry woodlands. These are one of the smallest land turtles (shell length is about 10-11 cm). Most close-up view in this genus - Homophorus femoralis grows to a maximum of 15 cm.

Another miniature turtle (Pyxis arachnoides), whose shell length does not exceed 10 cm, lives in the west of Madagascar. Spider turtle can be found in dry savanna woodlands or bush thickets. The anterior part of the reptile plastron is movably connected to the main part using a transverse tendinous ligament. This feature allows the animal to close in front when attacked by predators.

Another genus close to terrestrial turtles is the gopher (Gorherus). This genus is represented by (Gorherus coluphemus), which lives in the southern regions of the United States and northern Mexico, where they are found in dry sandy areas, dunes, and pine woodlands on sand. This species is distinguished from terrestrial turtles by its flattened, strong front legs and wide and short claws, which are adapted for digging the ground (they can dig holes from 3 to 12 m). Gopher tortoises reach a length of 34 cm. The low, sometimes slightly lumpy shell is brown with light, fuzzy spots.

Found in Tanzania and Kenya elastic turtle(Malacochersus tornieri), which has a very unusual appearance. Its shell is formed by thin perforated bone plates and is soft to the touch. The underside of the carapace is strongly flattened and cut off almost vertically at the back, while the marginal scutes protrude back like serrated blades. The elastic turtle climbs well and climbs between stones, and when in danger, it hides under stones or in rock crevices. When you try to get it out of the crack, it becomes jammed with your feet, and perhaps even swells slightly.

The turtle is an ancient animal from the order of reptiles. It appeared more than 200 million years ago and, according to scientists, has remained virtually unchanged over the past 150 million years.

The main distinguishing feature of a turtle is its shell. This is a complex bone-skin formation that covers the turtle’s body from all sides, protecting it from attacks by predators. The inner part of the shell is formed by bone plates, and the outer part is formed by leathery scutes. The shell consists of two parts - dorsal and abdominal. The dorsal part, or carapace, has a convex shape, and the ventral part, or plastron, is flat. The body of the turtle is firmly fused with the shell, from which only the head, limbs and tail protrude between the carapace and plastron. In case of danger, the turtle can completely hide in its shell. Turtles do not have teeth, but they have a strong beak, pointed at the edges, which allows it to bite off any food. Turtles, like some snakes and crocodiles, lay leathery eggs. Turtles do not care for their offspring. Immediately after laying eggs they leave the clutch.

Diversity and lifestyle

There are more than 300 species of different turtles. Some of them lead a land lifestyle, and some have adapted to live in water. Freshwater turtles, unlike land turtles, have a more flattened and smooth shell, as well as membranes between the toes. This helps them swim skillfully in water element. Sea turtles spend most of their lives in the seas and oceans. Only once a year, during the breeding season, they come ashore to lay eggs in the coastal sand. The limbs of sea turtles have evolved into flippers, which allow them to “hover” in the ocean depths.

Dimensions

Turtles vary greatly in size: the land spider turtle does not exceed 10 cm in length and weighs about 100 g, and the sea leatherback turtle reaches two and a half meters and weighs more than half a ton. The giant among land tortoises is the Galapagos elephant tortoise. The length of its shell exceeds one meter, and its weight can be four centners.

Coloring

The coloring of turtles is most often modest, camouflaging them with color environment. But there are species with very bright contrasting patterns. Thus, in the radiated tortoise, in the center of the scutes of the shell, against a mainly dark background, there are striking yellow spots, from which the same yellow rays extend. The head and neck of the red-eared slider are decorated with a pattern of wavy lines and stripes, and behind the eyes there are bright red spots.

Diet

Land turtles mainly feed on plant foods - grass, leaves of bushes, juicy fruits. Freshwater and sea turtles are predators that eat fish, insects and their larvae, worms and shellfish. Land turtles can supplement their diet with animal food, while aquatic turtles can supplement their diet with plant food.

Lifespan

The turtle is a long-living record holder among vertebrates. She can live more than a hundred years. There is a reliable case where a gigantic tortoise lived for 152 years. Scientists say that a turtle can live two hundred or more years.

Turtle: brief information

Terrestrial turtles land turtles

A genus of land turtles. Includes 5-7 species inhabiting the Mediterranean, the Balkan Peninsula, the Caucasus, Asia Minor and Central Asia. The most famous is the Mediterranean tortoise. Convex and smooth carapace, slightly serrated along the posterior edge, long. up to 30-35 cm, colored yellowish-brown or light olive with dark spots on the shields. There are five claws on the front paws, and one conical horny protuberance on the hips. These turtles are found in forests and forest clearings Black Sea coast Caucasus in the Krasnodar region, as well as in dry steppes and forest edges in Dagestan. They lead a diurnal lifestyle, feeding on a variety of vegetation, sometimes eating worms, snails, and eggs of birds nesting on the ground. They spend the winter in a daze, climbing into holes, crevices between stones, or burrowing to shallow depths. In May, the females begin to lay eggs, the turtles hatch in the fall, but emerge from the earthen nests to the surface only next spring along with the adults. By this time, their size reaches 35-45 cm. Catching the Mediterranean turtle is prohibited; it is listed in the IUCN Red List. The Central Asian tortoise, found in the semi-deserts and steppes of Central Asia, differs from the Mediterranean tortoise in its flatter, lighter carapace and four claws on its front legs. It often appears in markets and pet stores in Russia.

.(Source: “Biology. Modern illustrated encyclopedia.” Chief editor A. P. Gorkin; M.: Rosman, 2006.)

See what “terrestrial turtles” are in other dictionaries:

TERRETS TURTLES, (Geochelone) a genus of reptiles of the family of land turtles (see LAND TURTLES), includes 16 species, common in Africa, South Asia, and South America. The most ancient species include giant tortoises (see... ... encyclopedic Dictionary

Land turtles ... Wikipedia

The general name for all turtles that live on land and in fresh water (see Freshwater turtles) and are contrasted with sea turtles (See Sea turtles). In a narrower sense, the family of land turtles (Testudinidae), belonging to ...

A squad of reptiles. Have (except leatherback turtle) a bony shell fused with the vertebrae and ribs. 12 families, including freshwater turtles, land turtles, sea turtles, etc.; about 230 species, widely distributed; V… … encyclopedic Dictionary

Turtles Illustration from the book by E. Haeckel ... Wikipedia

- (Testudines, or Chelonia), a detachment of reptiles. Known since the Triassic, descended from cotylosaurs. Feature structure Ch. is a bone-horny or bone-leathery shell covering the entire body, consisting of a dorsal (carapace) and abdominal... ... Biological encyclopedic Dictionary

- (Testudines or Chelonia) subclass of reptiles. They have a bony carapace, covered with horny scutes or skin and consisting of dorsal and abdominal shields. Blacks are devoid of teeth, their jaws are covered with horny sheaths that form something like a beak. Forms... ... Geological encyclopedia- a group of turtles that spend most of their lives in rivers, lakes and swamps, but breed on land; feed mainly on animal food. Together with land turtles they form a group of land turtles (See Land turtles). K P. h... Great Soviet Encyclopedia