Will China s native turtles become extinct?

Possibly. Not to mention the native Chinese turtles, even many foreign turtles have reached the brink of extinction.

Of the 263 species of freshwater and terrestrial turtles in the world, one has been identified as extinct, 73 as critically endangered and endangered, and 117 as threatened by the International Union for Conservation of Nature. Of the 58 species of tortoises, 7 are extinct, 1 is extinct in the wild, and the remaining 50 are all considered threatened, of which 33 are critically endangered and 18 are critically endangered or endangered. Together, 71% of all turtles are in danger of extinction or imminent extinction.

Of the 7 sea turtle species, 6 are assessed as threatened, and 5 of them are critically endangered and endangered.

The illegal trade in Chinese tortoises is huge, with millions of tortoises being traded from China each year to other parts of Asia, Africa and North America. The study found that most of China's native turtles have become extinct in the wild, such as the three-line closed-shell turtle.

Recently, these illegal traders claimed that the extract of the three-line closed-shell turtle was able to ** cancer, which greatly increased its commercial value, and a turtle** is currently worth several thousand dollars. Due to its high economic value, the tortoise is currently being bred in large quantities, but due to the large-scale destruction of its habitat in the past 30 years, the tortoise has been caught intensively, resulting in it being on the verge of extinction.

Of course, in addition to food and environmental competition. Artificial non-killing, eating, selling, and raising also contributed to the extinction of native turtles.

Invasive species are far less destructive than anthropogenic overfishing and chemical pollution.

There are many varieties of domestic turtles, including some common varieties and some rare species:

The most common turtles belong to the genus Turtles, but the big-headed turtles and black-necked turtles of the same genus are relatively rare, especially the black-necked, the juveniles are very brightly colored, and they are much, much more expensive than ordinary turtles.

The genera include: yellow-throated turtle, Ehrlich's turtle, and Lashio turtle. Yellow-throated terrapins are very common and are easily seen in the market.

The Ehrlich water turtle is a cross between a yellow-throated and three-line closed-shell turtle, and the Lashio water turtle is a cross between a yellow-throated and a turtle, and the two species are still controversial in the definition of subspecies, but we need to know this statement. Since it is a hybrid breed, the number will not be too much, and the market can be seen occasionally.

The genera of flower turtles includes: Chinese flower turtle, Filipino flower turtle and jaw flower turtle. Similarly, the Chinese flower turtle is the most common, and the number of the latter two species is relatively rare, and it is difficult to see it in the market.

There are many species of closed-shell turtles, and they are all valuable species, which can be said to be unique to China. These include: golden-headed closed-shell turtle, three-line closed-shell turtle, Pan's closed-shell turtle, Zhou's closed-shell turtle, Yunnan closed-shell turtle.

There are not many species of tortoises distributed in our country, including: Burmese tortoise, concave carapace tortoise and four-clawed tortoise. Among them, the four-clawed tortoise is a national first-class protected animal.

There are also some other common species in the market: saw-edge turtle, ground turtle, spotted turtle, four-spotted turtle and so on.

The turtles that are about to become extinct in the wild in China are:

Yunnan closed-shell turtle.

The habitat is a plateau mountain with an altitude of 2000 m to 2260 m, endemic to China, only known to be found in Kunming and Dongchuan, Yunnan Province, China, and three adults were found in 2009, which were assessed as functionally extinct. It belongs to the national second-class key protected wild animals.

Yunnan closed-shell turtle is a turtle turtle and turtle reptile. The shell is about 140 mm long. The head is medium, the dorsal head is smooth, olive-colored, with yellow lines on the side of the head, and yellow symmetrical markings on the pharynx and chin.

The palate is not hooked. The dorsal carapace is low, with three ridges and strong ridges. The ventral carapace is large, the anterior margin is rounded, and the posterior margin is concave.

2 anal shields. The back is brownish-olive or creamy shell, and the edges and edges are sometimes yellowish-white. Abdomen brown or light yellowish olive, margins yellowish-white, scales dark black or ventral yellowish oval, on each ventral shield, with light reddish-brown stains.

The dorsal and ventral carapace is connected by ligaments, and there are ligaments between the thoracic and ventral shields, and the anterior lobe of the ventral carapace is movable and cannot be completely closed to the dorsal carapace. The limbs are flattened, and the fingers and toes are fully webbed.

Zhou's closed-shell turtle.

There are very few closed-shell turtles in the wild and are endangered. It is mainly distributed in Guangxi and Yunnan provinces.

Zhou's closed-shell turtle, closed-shell turtle genus, also known as black turtle, black closed-shell turtle. It is a rare closed-shell turtle species. The Zhou's closed-shell turtle was collected by Mr. Zhou Jiufa, the founder of the Nanjing Turtle and Turtle Nature Museum in China, in Pingxiang, Guangxi, and was identified as a new species by Academician Zhao Ermi, Chengdu Institute of Biology, Chinese Academy of Sciences.

In order to express his contribution to Mr. Zhou Jiufa's creation of China's first turtle and turtle museum and the promotion of scientific research on turtles and turtles, it was named Zhou's closed-shell turtle.

Bose closed-shell turtle.

Endemic to China. At present, it is only known to be distributed near Baise in Guangxi Zhuang Autonomous Region. Its distribution range is very narrow, and it is difficult to find it in the wild.

Baise closed-shell turtle, turtle turtle order turtle reptiles. The dorsal armor is about 130 mm long. head and neck yellow, with two fine brown longitudinal stripes behind the eyes, raised dorsal carapace, and a low ridge in the midline; The ventral carapace is larger, the anterior and posterior halves of the ventral carapace can be completely closed to the dorsal carapace, the ventral shield sulcus is the longest, the humeral shield sulcus is the shortest, and the anal shield sulcus is complete.

The dorsal carapace is reddish-brown, with a high bulge and a distinct ridge, the ventral carapace is almost completely black, the outer margin is yellowish-white, and the limbs and tail are pink or reddish-brown.

Three-line closed-shell turtle.

It is mainly distributed in Hainan, Guangxi, Fujian and the deep mountains and streams of Guangdong Province, and is distributed in Vietnam and Laos. This turtle has been listed as a second-class protected animal in China.

Three-line closed-shell turtle, also known as money turtle, golden-headed turtle, red-edged turtle, red-bellied turtle, broken plate turtle, Sichuan-backed turtle. The head is elongated, the dorsal part of the head is sallow, the top is smooth and scaleless, the snout is blunt, the upper rafters are slightly hooked, the throat and neck are light orange-red, and there are prismatic brown patches behind the eyes on the side of the head. The dorsal carapace is reddish-brown with 3 black longitudinal lines, **1 long (not in juveniles), and the anterior and posterior margins are smooth and not serrate.

The ventral carapace is black with yellow margins, and the dorsoventral and ventral carapaces, and between the thoracic shield and the ventral shield are connected by ligaments, and the shell can be completely closed. The armpits, limbs, and tail are orange-red, and there are webbing between the fingers and toes. It inhabits mountain streams.

It likes a place with plenty of sunshine, quiet environment and clean water.

China's 36 species of wild turtles and turtles are all in an emergency, and the largest number of Chinese turtles (soft-shelled turtles, Wang Ba) are classified as vulnerable by the International Union for Conservation of Nature (IUCN), and the "national treasure" giant panda is also a protected animal of this level. The others are endangered, critically endangered, extinct in the wild, and lack of data, among which 8 species of turtle and 2 species of turtle are endemic to China.

Money turtles and hawksbill turtles, wild has been very few, hope.

Except for Brazil, which can be on the list.

The golden turtle is dying out in the wild, and the artificial population is still huge.

There are only a few golden turtles in China.

<> "Why do Brazilian tortoises flood in China when they have nothing to do in the place of origin?"

The most serious of these may be the Brazilian tortoise, which is often kept as a pet because of its cuteness. It is believed that China used to import 8 million of these turtles every year, and with the addition of local breeding, the number of such turtles is considerable. They can be found everywhere in aquariums, and they are relatively cheap, so they are often used as the object of release, and they are released in a few sacks at every turn.

Although the Brazilian turtle is named after Brazil, it has nothing to do with Brazil, they are not native to Brazil, but to the Mississippi River and the Rio Grande River basin in North America. However, the transportation cost of this painted turtle in South America is very high, so it was quickly abandoned, and then the red-eared turtle was imported from the northern service Duanmei, but the name of the Brazilian turtle has been played, so the red-eared turtle continues to use this name, which is better to sell.

As they reach maturity, their shells become unusually hard, and their natural predators in the wild are almost absent in their native area. However, even if the shell is very hard, most turtles still have natural predators, such as crocodiles, which like to eat turtles, but Brazilian turtles rarely overlap with crocodiles.

Listed by the International Union for Conservation of Nature as one of the 100 most invasive species in the world, the Brazilian tortoise is not enough if it just has no natural predators. In fact, with the trend of globalization becoming more and more obvious, species invasion is inevitable, but not all species can establish populations elsewhere.

A recent survey report in India shows that it has been considered extinct for a long timeIndian golden beetle, but now it appears frequently in the local area, and there are quite a few of them. This report has caused many biologists to talk about the fact that the name of this golden turtle is ".North Indian box turtle".

North Indian box turtle, its habits and what we are all familiar withSoft-shelled turtleAlmost, the most conspicuous is its whole body, it can be seen from the "golden character", its carapace is yellow, small, but the color of the whole body is special, so it is called by the common people".Golden Turtle

Previously, due to various reasons, the golden turtle has been on the verge of extinction, which has also made the North Indian box turtle fade out of human vision. In the past, this golden beetle was also valuable and belonged on earthRare species。But I didn't expect that it had been resurrected again in recent years.

In everyone's consciousness, I thinkAustralopithecus is the ancestor of humansBut in fact, after the speculation of biologists, our ancestors should beA bony fish 400 million years agoIt is also the ancestor of all vertebrates. CoelacanthIt is the name of this bony fish that has disappeared from the earth60 million yearsBecause the extinction is so long ago, biologists know very little about it.

However, in20th centuryThis creature, which became extinct 60 million years ago, has returned to everyone's field of vision, which has allowed biologists to have a further understanding of it and a deeper study of the history of human development.

Are extinct species really extinct?

Most often, biologists judge whether a species is extinct or not. I'm just looking at itWhether or not an individual has existed in the last 50 years。If the creature does not reappear, it is determinedThe species is extinct

Some scholars believe that this method of judgment is not 100% correct, like:Golden turtles and coelacanths that have come back from the deadThe same. They have been declared extinct internationally, but they may simply live in their own environment and have not been discovered by humans.

The more abundant the earth's biological species, the more healthy the earth's ecological balance is, so human beings must beProtect the planet, protect life

It's not really extinct, it's just that people can't see it, and they may be living in a special form where people can't see it. The area where the golden turtle was found this time has a forest area coverage rate of about 85%, and after the habitat is suitable, the Yangcai-armed golden turtle appears in people's field of vision again.

I don't think extinct species are necessarily extinct, because due to environmental constraints, we can't know exactly whether some species are really extinct, because there are still one or two possibilities that exist.

Extinct species are not necessarily extinct, and many species that humans think are extinct may have simply gone into hiding.

Alien species will cause great harm to the local environment, and we should eradicate alien species and protect the local environment. Breaking the ecological balance of species may bring disaster to the ecosystem! There is no such thing as invasion of alien species, and all kinds of species can only adapt and be adapted, and it is only the ideology imposed by human beings that puts forward the idea of invasion.

This problem should be analyzed in a dialectical way, first of all, let's talk about its harm, the invasion of alien species will destroy local biodiversity, encroach on the living space of local species, adversely affect the survival of local animals and plants and human beings, and cause extreme economic losses, such as the scavengers in Guangdong and the Asian carp in the United States are vivid examples.

But everything has its two sides, it is harmful, but as long as human beings use the characteristics of alien species and control their breeding scale, they can also bring a lot of social and economic benefits to the local area, such as using artificial methods to breed some foreign excellent varieties of pasture, or hybridizing some animals and plants can also improve the ornamental value.

In short, the harm of alien species is great, but this invasion is also caused by people, we should strictly control the invasion of alien species in ordinary life and production, and make reasonable use of the use value of alien species to the local area.

The Brazilian tortoise infestation needs to be dealt with. Because many breeders release their animals privately, and the Brazilian turtle is highly adaptable and has no natural predators, it is flooded. Sensitive to temperature, in the river of Sichuan, in winter and spring, it will climb onto the shore by itself, and the low temperature of the river water can not stand it, and it will attract other animals or people to attack and kill.

It is difficult for animals that can't survive the winter to reproduce, maybe the south can, anyway, Sichuan can't. Some people saw in the northern waters that Sichuan can't survive the winter, and the north probably can't either, maybe it can survive at other times.

All in all, this kind of biological invaders have no natural predators in the new environment, so they are now so widespread that they multiply too much.