The fierce fight against invading creatures

There is a 'walking army' that has followed people to new areas and transformed the ecosystem there. Here are 8 of the fiercest battles with invading creatures that humans are confronting to preserve the ecosystem.

1. From exotic pets to swamp monsters

The pet owner once had a Burmese herd in the Everglades National Park, but when he did not like to take care of the animals longer than 6 meters, he dropped them into the swamp. The region's wildlife becomes a gift for them. Meanwhile, four African pythons were also discovered, this is a ferocious species that can attack humans. Biologists believe that if these two species mate, they will create a horrible and horrible hybrid with the species.

Status: Time will make the war worse

2. Attack of the 'blood-sucking demon'

Sardines are called vampire fish (vampire fish) because they suck blood. At the beginning of the 20th century, through this canal the blood-sucking fish entered the Great Lake and disturbed the peace of the place. They killed many fish in the lake such as salmon and freshwater fish.

In order to limit the development of this species, scientists have used the 'poisoning' fish to poison blood to reduce the number of this species. At the same time use artificial pheromones (substances released by animals to control mating behavior and development of the same species) to control reproduction in females.

Status: People are controlling the front well

3. The destructive power of rodents

Macquarie Island is a concrete example of the destruction of invading organisms. The problem started soon after seal and penguin hunters used this near Antarctic island as a base in the early 1800s. Rats from ships spilled ashore and damaged food reserves. The sailors then brought cats to catch mice and then rabbits for food.

However, wild cats have hunted birds on the island and environmentalists have conducted to destroy all these cats. By 2000, this was done. But once the predator is gone, the 'population' of rabbits explodes. Scientists say 100,000 hungry rabbits can strip off vegetation and spend $ 17 million to get rid of invaders and restore the island's green color.

Status: Poor handling and effort to save the situation

4. Christmas Island is crazy

On a small island of Australians in the Indian Ocean, the golden ants have triggered a phenomenon that biologists consider to be 'melting' of the native ecosystem.

The annual migration of indigenous red crabs with millions of trails to the sea is considered a wonder of the world. But this weaver ant robbery has killed the iconic red crab by spraying formic acid.

Recent research also shows that this ant species clings to trees and disturbs fruit-eating birds, adversely affecting the dispersal of seeds on the island. This golden wild species is one of the 100 most intense invasive species in the world and people are still unable to cope with it

Status: The enemy is winning

5. The invaders are famous, ugly and venomous

The battle of the Australians with the venom of sugar cane toads is a lesson for life. At first, sugarcane toads were brought into the area to control the beetles that destroyed sugarcane. But both tadpoles or adult toads are too high in toxins compared to most other species. Snakes, daisies, or crocodiles eat when they are not able to live to regret.

Biologists have tested a number of measures to control quantity, but the recent interesting idea is to encourage indigenous people to use ants to hunt immature toads. They found that ants are immune to toad venom and can work together to limit toads.

Status: Good control of battle

6. Norwegian mice have renamed an island into Rat Island

In 1780, a Japanese ship sank off the Aleutica Islands (near Alaska) and the Norwegian mice disappeared from the sinking ship. They deserve the Nordic tourism mouse list with the habit of crossing the Ban-area! Later, they were present on the island of Aleutica and opened a banquet with eggs of birds nesting on the island. They proliferate throughout the island until it is called the Rat Island.

Rats are the cause of the extinction of 60% of seabirds, mostly on islands. Gregg Howald, manager of the island conservation organization, said: 'Mice are one of the most dangerous invasive species. If you go to Rat Island, you will notice strange silence compared to the rich life on other Aleutian islands ".

To destroy all mice on the island, in September 2008, biologists gave planes to spread the pills onto the island to poison the mice. This work also caused negative effects - scientists found corpses of gulls and bald eagles and they guessed that they died from eating dead bodies of infected mice. However, scientists believe that once the mice leave, seabirds can recapture the island and grow again.

Status: The situation seems to be favorable

7. Say goodbye to Galapagos goats

When Charles Darwin arrived at the Galapagos Islands, he was amazed by the abundance of wildlife including iguanas, tropical penguins, turtles and sea lions. But the native animals of this world heritage region are threatened by exotic goats and pigs, they devastate nesting eggs and devour native plants.

In some islands, environmentalists plan a war against invaders. On the island of Santiago, after sweeping out the pigs, they calculated the destruction of 90% of the goats by bringing them back and killing them humanely. Scientists will use a goat with a signal generator or a female goat that has been sterilized to lure the goat herd to a blanket that is hard to find its way back.

Status: Mission completed

8. The ghost ants don't head

Red fire ants spread out of South America's range of discomfort because of the stinging pain and their attack on electrical equipment. They often crawl into circuit boards and turn off traffic lights, even chew and inject electronic devices. Scientists tested pesticides and reproductive control of ants, but a new method of interest is to import parasite flies from South America that attack ants.

This parasite method is quite cruel. The parasite flies to raid and immediately lay eggs on the ant chest. When the larvae hatch, they will dig for pathways to the brain and gradually eat from within. Within 2 weeks, the ants that are alive and dead will be completely disoriented. Finally, the larvae will secrete an antiaging enzyme.

Status: Create zombies!