The smallest monkey in the world

Of course, you can't go to the zoo without seeing monkeys, so what is the smallest monkey in the world? Let's have a look!

The world's smallest monkey:

Marmoset:

Marmoset, the general name of the genus marmoset. Marmoset family includes jumping monkey subfamily and marmoset subfamily. There are 35 species in 3 genera, including lion tamarisk monkey, emperor tamarisk monkey, top tamarisk monkey, Jurassic tamarisk monkey, black-and-white tamarisk monkey and common tamarisk monkey. Marmosets have a small body, a long tail, a curved tail, a round head, no cheek pouches and a nostril side. Different from other higher primates, only the big toe has nails, and other toes and fingers are claws. Because the physiological characteristics of marmosets are very similar to human beings, they are widely raised and used in many research fields of life science.

Morphological characteristics:

The characteristics of marmosets Marmosets are small in size, long in tail, curved in tail, round in head, without cheek pouches and nostril side. Most marmosets are about 19~25cm, 27~35cm long, slightly larger than squirrels. Their heads and faces look like pugs or lion heads, with round heads and big ears, velvet bodies, long tails and long hair at the ends. The weight of females is between 220 and 350g, and that of males is between 260 and 450g; Only the big toe has flat nails, and other fingers and toes are claw-like sharp claws that can be held together; There are 1 nipples on the chest; The hind limbs are longer than the forelimbs; 32 teeth; There are different types of teeth, including incisors, canines, premolars and molars. Cheek teeth are usually mound teeth and low crown teeth. The molars are square with four conical protrusions at the lower part, which are suitable for chewing. A keen sense of smell, followed by hearing and vision; Having a double horn uterus or a single horn uterus and a cecum; Facial skin will change color, and the body temperature will be unstable in the sun.

Living habits:

Marmosets are omnivores. Flowers, fruits, gums and insects in the forest are all their favorite foods. Sometimes they steal birds' eggs and prey on small vertebrates and reptiles. Marmosets usually rest at the bottom of cages or perches, crawl on all fours or stand on their hind legs, but they can't see standing or walking. When they move their positions, they usually jump. Flying? Quick and dexterous behaviors such as typing,

Keep your balance by your tail when crawling or shifting gears, but I don't see the scene of winding your tail and hanging your body on the perch; No macaques? Scratch your head? At the scene, I found that it sometimes bites the knee joint; When it finds a stranger, it will erect white hairs beside its ears, shake its face constantly, and even scream at a high frequency to show fear and warning. It is rare to see that human beings will take the initiative to attack without obvious attack or capture, but will attack on the contrary; Do they use sheets when grabbing food? Hands? Grab food, put it in your mouth,

If it is liquid food, they will lick it directly with their tongues; Ordinary rafters will use glaring, squinting, opening their mouths, making sounds and smelling to communicate, express their feelings and convey alarms; They distinguish each other and territory through urine or special body odor, and if it is excessive, it is a bad phenomenon; It is a normal physiological phenomenon for marmosets to bite wood as a marker; In the case of artificial feeding, the continuous biting of wood shows irritability, which may be because the feeding management has not synchronized its needs; When dealing with the relationship between groups, do you wash each other's coats or skin, both? Bear hug? Or licking each other and clinging to each other are all good social behaviors. Marmosets' eyesight is very keen. Like humans, they can accurately judge the distance of objects with two eyes at the same time, so that they can jump and fly in the jungle and come and go freely.

However, marmosets are not as good at recognizing colors as we are. All male marmosets are red-green color blind. Interestingly, only some female marmosets are red and green color blind, while others have normal color vision like us. Marmosets have rich calls, similar to those of birds. Some of their calls are even beyond the recognition range of human ears. Their hearing has also evolved well. In the forest, marmosets are small, have a large range of activities, and are sheltered by leaves, so voice communication is almost the most important way of communication between marmosets. Marmosets also have a keen sense of smell. It can not only find food and judge whether it is ripe, but also warn potential intruders and natural enemies. More importantly, marmosets also use smells to mark and communicate, such as using urine to delimit their own territory, or leaving recognizable odor information for other marmosets.

Main varieties:

Marmosets and marmosets belong to 3 genera and 35 species, and are small lower apes in Central and South America. Saguinus imperator, also known as Emperor Marmoset, Emperor Marmoset, Bearded Marmoset, Emperor Marmoset or Emperor Marmoset, is called? The emperor? Because it's like William II. The name was originally a joke, but later it became a formal scientific name. Cotton-eared marmoset, also known as common marmoset. Adults are only 20 centimeters long at most and weigh 300 ~ 400 grams. Yellow-headed rafter, also known as Huangguan rafter, is a unique genus in Brazil. Marmosets are small long-tailed monkeys from South America. It is an arboreal animal like a squirrel, and it moves quite quickly. I like small group activities in Hundred Days City. Except the big toe, all toes have claws, which is good for jumping up the tree. Unlike other American primates, they lack a third molar.

Rafters have been kept as pets since the beginning of17th century. The main food is insects, but also some fruits. Dogs have short teeth, and their body length is generally 15 ~ 25 cm, excluding the 25 ~ 40 cm long tail. Its hair is dense, as thin and smooth as silk. [3] Jurassic monkey, the smallest monkey found in the world at present, lives in the tropical rain forest of South America. This is a little monkey that looks and behaves like a squirrel. Because of its small body and long tail, it stops on tiny plant branches and moves quickly. It often runs around in the Woods and jumps, so it is called locally? Squirrel monkey? 、? Bird monkey? Wait a minute. After research by zoologists, it was determined that its scientific name was Jurassic or Japanese.

Species value:

The advantages of marmosets are small size, fast reproduction and small foraging space. Moreover, marmosets are more similar to humans in some aspects, such as the family structure of marmosets is closer to humans and can be used to study human social behavior; Marmosets have richer phonetic communication and are more suitable for studying human language than macaques. As a primate experimental animal, the common marmoset has the advantages of small size, good economy and high reproduction rate, and has been applied to many researches in the biomedical field in recent years.

Marmosets are mainly used for reproductive physiology, contraception and hepatitis A virus and parasitic diseases. A Japanese research team published a paper in the British journal Nature, saying that they have bred transgenic common marmosets and confirmed that the transferred genes can also be expressed in the second generation of common marmosets. This is the first time that scientists have cultivated the second generation of transgenic primates that can inherit the transferred genes.