In our country, there is an animal that has quietly and gradually disappeared from many places, and even before some people can react, they are already endangered.
It is the "jackal", is and wolves, tigers, leopards together known as "jackals, tigers and leopards" four beasts of prey, in 20-30 years ago, jackals were once very common, and even many villages can see the figure of jackals. However, in recent years, the number of jackals in China has declined very rapidly, the living conditions are also very dangerous, and now not only can not see jackals in many places, but even the scale of jackal groups has gradually shrunk, most jackals have only a few, a few have more than 10, and it is necessary to know that more than 20 jackals in the past are also more common.
So the question is, how can the jackal suddenly disappear?
<h1 class="pgc-h-arrow-right" data-track="4" > jackal</h1>
When it comes to the four major beasts of our country, people will think of the "jackal, tiger and leopard", of which the jackal ranks higher than the tiger, the king of the forest. The reason for this is that on the one hand, the distribution of jackals is more extensive than that of tigers, and in the past many parts of China, the figure of jackals can be seen, and people know more about it.
On the other hand, it is because of the ferocity of the jackal. Jackals are smaller than wolves, far less aggressive than tigers, and must live in groups in order to survive. During the hunt, the jackals will cooperate with each other to hunt prey that is much larger than itself.
Some people say that jackals, like spotted hyenas, like to "pull out their anus", that is, start attacking at the butt of their prey, and then pull the other party's intestines out, which is very cruel. But in fact, jackals rarely do this, they more likely take turns to attack the prey, so that the prey loses too much blood and dies.
Jackals have a wide range of prey sources, including a variety of ungulates, and even ferocious wild boars dare to challenge, and it is precisely because of this that jackals, as top hunters, control the population of their prey species, play an important role in maintaining the integrity of ecosystem structure and functional integrity, and are also one of the important indicators to evaluate the healthy functioning of a regional ecosystem.
However, they are so important to the ecosystem, the status quo is not good.
<h1 class="pgc-h-arrow-right" Data-track="10" Why did > the jackal disappear? </h1>
In fact, although the jackal is the four beasts, people are more tolerant of the jackal. On the one hand, because the jackal is not large, the threat to humans is relatively small, and some people do not feel afraid when they encounter jackals. On the other hand, because jackals have no medicinal value, unlike tiger bones and tiger skins, people will hunt tigers for economic benefits, but they will not hunt jackals for economic benefits.
Although people have not specifically targeted jackals, it is strange that in the past 20 years, jackals have gradually disappeared from people's vision, and since 2004, jackals have been listed as endangered by the IUCN, and it should be noted that today's giant pandas are out of endangerment. It is estimated that there are probably only 4500-10900 jackals in the world, of which only about 1/4 of the adults have the ability to reproduce. Jackals are so rare that once a herd of jackals is found somewhere, it will be on the hot search.
Although jackals have disappeared from all over the world, the reasons for why jackals disappear are not as clear as those of tigers and leopards, and are likely to be the result of a combination of factors.
On the one hand, this is because jackals are social animals, and unlike wolves, jackals are more social, and in the case of abundant food, jackals will let their cubs eat first, and will also allow other females in the population to reproduce.
Because jackals prefer to live in groups, the jackals have a greater demand for prey, and even in some national parks in India, where the density of prey is high, it is necessary to feed a jackal group at least 84 square kilometers of land. And if the prey density is smaller, the jackal colony will have a larger territory.
When there is a shortage of prey in their territory, their numbers gradually decrease sharply. When the number of jackals decreases, the hunting ability of the jackals also decreases, which leads to the demise of the entire jackal herd.
Secondly, jackals are widely distributed, many of which live near human villages, which leads to dogs in the village will infect infectious diseases, such as: dog plague and other infections to jackals, jackals are living in groups, which will also lead to infectious diseases more easily spread in jackals, so that some jackals disappear.
More importantly, roads, farmland and villages divide the jackal's habitat into small pieces, causing habitat fragmentation. This makes it difficult for jackals living between habitats to communicate genes, which can also cause the jackal population to degenerate and eventually disappear.
Fortunately, China's Yunnan, Qinghai, Xinjiang, Tibet and other places, have successively found the figure of jackals, I believe that as long as we carefully protect, their populations or can get rid of the danger of extinction.
<h1 class="pgc-h-arrow-right" data-track="20" > summary</h1>
There are many beautiful little creatures on Earth, and whether we like them or hate them, they have evolved on Earth for hundreds of millions of years. In the evolution of hundreds of millions of years, they have occupied a place in the ecological chain, once they disappear, the impact on the local ecological chain is also very large, such as: tigers, leopards, wolves, jackals and other predators disappeared, resulting in the flooding of wild boars in some areas.
If we want to make the ecological chain operate healthily, we can only protect these species and let them exert their ecological value.
#豺 #