Because Dalian Snake Island is far from land, there is no need to worry that poisonous snakes on the island will fly across the ocean to the mainland. In fact, these poisonous snakes are lazy and not strong enough to swim for a long time. Although the territory area of each poisonous snake on Dalian Snake Island is limited, the changes of ecological environment in the past tens of thousands of years have enabled the poisonous snakes on Dalian Snake Island to evolve the most suitable lifestyle for themselves.
How did the poisonous snakes form on Dalian Snake Island?
It turns out that Dalian Snake Island is connected with land. It's just a hill. It was a paradise for animals at that time. Beautiful environment, birds and flowers, many herbivores. Antelopes and deer are all over Shan Ye. The chain is quite complete. Unfortunately, due to geological changes, the Bohai Sea sank, and Dalian Snake Island slowly separated from the land, forming an isolated island.
The wild animals on the island are facing fierce competition. They are all extinct, leaving only a few snakes. But even reptiles like snakes have to eat. How can they survive without food? It has to be said that creatures in nature can always show amazing vitality in their generation.
The snake in Dalian Snake Island is a black-browed snake, which is a very patient snake. In the process of geological changes, disasters such as earthquakes are inevitable, but poisonous snakes have escaped by hiding in caves. Later, I saw animals fighting for food, poisonous snakes starving, and cats staying in caves until other animals became extinct. Come out to bask in the sun. Because Snake Island is an isolated island at sea, it is bound to face the problem of food shortage. In order to survive, snakes have evolved new skills.
How do poisonous snakes in Dalian Snake Island survive?
Everyone knows that snakes are carnivores. They eat very mixed food. They can eat insects, spiders, earthworms and other invertebrates, as well as fish, frogs, birds, mammals and other vertebrates. It can be said that snakes will always come as long as they are living animals. However, Dalian Snake Island has long been isolated from the world, and most animals have become extinct. It is especially difficult for snakes to get the food they need. Even some insects are difficult to catch. After all, a long time ago, there were more than 20 thousand poisonous snakes that could eat. Finished eating.
How can you live without food? ? Viper came up with a way to reduce consumption. The best way to reduce consumption is to sleep. Just like many animals have the habit of hibernating, vipers not only hibernate, but also increase the dormancy period in summer, that is to say, people stay at home and sleep in winter and summer, while vipers only come out occasionally in spring and autumn. A few years. Coupled with food, the rest is dormancy, thus reducing consumption, consumption year after year.
Don't say that this method is really suitable for reptiles on isolated islands. Of course, the premise is that they can tolerate loneliness and change their habits. Other wild animals have only one kind of hibernation. Fortunately, you still have a summer sleep. Summer is hot and humid. It's not suitable for sleeping in a nest, but poisonous snakes enjoy it.
In addition to sleeping, poisonous snakes need to replenish food when they wake up. They only need to eat two meals a year to spend a dormant period. Dalian Snake Island has a good geographical location. It happens to be a resting place for many migratory birds during their migration. Some birds, such as black-tailed gulls and yellow-billed egrets, even come to nest on the island, which provides a good place for poisonous snakes. Predation opportunities.
Every year when migratory birds visit Snake Island, poisonous snakes will cheer up and try to catch a bird. Two seabirds can basically meet the demand for one year, even if there is only one, it is acceptable to starve to death with the ability of viper. Some poisonous snakes can be fed all at once, even for two to three years. The vitality of this animal is really tenacious.
Besides poisonous snakes, there are some mice on the island. These mice are strong and cunning. When they are dormant, they will wait for snakes to prey. However, snakes don't sit still, sometimes they kill mice. There aren't so many mice, or poisonous snakes wouldn't have to worry about food.
abstract
The poisonous snakes on Dalian Snake Island can be said to be the best snake species. Other snakes sleep once a year. They sleep twice a year and spend most of the year sleeping. More importantly, they only need to eat twice to meet the energy needed for survival all year round. As far as the ability to endure hunger is concerned, poisonous snakes are unique. No wonder poisonous snakes can become the only overlord on Dalian Snake Island. In order to survive, it evolved this trick. It's amazing!