Those years of engaging with the system for animal insurance

Li Cixin received the system update information, browsed it carefully, and finally understood what happened to those house mice that he had seen before.

It turns out that the Jamaican hamster was completely lying on the ground in this rat plague.The real culprits of rats are actually the black house rat and the brown house rat.

For the extinct Jamaican hamster, this is simply a disaster.

Originally, the reproductive power of Jamaican hamsters was not so strong, and the more fertile ones were the black house mouse and the brown house mouse.

It's just that because of the long history, when some people in later generations studied the extinction of Jamaican hamsters, they thought that the rat problem was caused by Jamaican hamsters, just like people at that time.

But in fact, Jamaican hamsters have always survived on this island, and there are no extreme numbers.

Moreover, the combat effectiveness and survivability of Jamaican hamsters are not as good as those of the black house mouse and the brown house mouse.Otherwise, it will not happen that under the hunting of humans, the other two kinds of mice have not become extinct, but the Jamaican hamster has become extinct.

Even if the number of predators is reduced, their numbers are not a large proportion.

Instead, it was the black and brown rats that followed the colonists' ships in alarming numbers.

As the most successfully invaded mammal in human history, the house mouse has always been neglected by humans.

After genetic sequencing by scientists, the Rattus norvegicus may have originated in southern East Asia.Later, with human activities and natural migration, it spread across many parts of Asia.Because of its large size, it is also called a big mouse.

The black house rat is mainly distributed in the European continent. The horrible Black Death in history was caused by the proliferation of the house rat.

Rattus norvegicus are larger and more social, and they prefer to fight in teams, which is a more aggressive existence in the rat family.

They even attack larger animals in groups, such as rabbits, chickens, etc., and kill their young.

The house mouse is smaller, better at climbing, and is known as the roof mouse.

Historically, Rattus norvegicus came to Europe because of its combat effectiveness and the viruses it carried.Instead, it cleverly suppressed the number of black house mice and weakened the spread of the Black Death.

In the long-term competition, one of the black house mouse and the brown house mouse is responsible for the roof, and the other is responsible for the surface.Become a pair of black and brown Shuangsha, smuggled to the new land through human ships, directly or indirectly caused the extinction of many species.

For example, New Zealand's national bird, the kiwi (also known as the kiwi), was almost cornered by foreign mice.Because there are no natural enemies on the island and they have lost the ability to fly, they can only nest on the ground, so the eggs are very vulnerable to the threat of rats.

This is a symbol of a country, so it can be protected. The situation of other small ground animals can be imagined.

"It seems that the extinction of the Jamaican hamster this time is due to accidental injury." Li Cixin said in his heart, "Little Bao, what should we do about the invasion of this species?"

"Now open the copy of the C-level mission to exterminate invasive species. If it is successfully completed, an additional gene can be rewarded."

Li Cixin: "Is this killing to stop killing?"

"Well, yes, this is the most direct way to protect the local ecological chain."

Li Cixin moved his body and walked towards the sugarcane field. At this time, he was in an invisible state.Those niggers couldn't find themselves at all.

Because the bottom is tropical, it is very suitable for the growth of sugar crops such as sugar cane.

These enslaved blacks have lost their mother tongue over the generations, and now their language is English.

Li Cixin can clearly hear their conversation through the system's ability:

"Damn rat, this year's sugar cane has been gnawed a lot."

"If this continues, the master will definitely blame us."

"So what? Anyway, we're working again, and it's their money that's lost, isn't it?"

"Oh! How can you say that, be careful that the master beats you with a whip."

"What are you afraid of? Just be beaten to death. Beat these disgusting mice every day."

"Stop talking, the master is here."

Not far away, a white slave owner led the guards and walked towards him.

The black slave immediately stood up, crossed his hands in front of him, bowed his head and saluted the slave master in a very humble way.

The slave owner looked around, and finally found the sugarcane that had just been eaten in the corner of the sugarcane field.

Furious, he took the whip from his waist and whipped it at the nearest black slave.

The horsewhip wrapped in wire danced towards the black slave with a piercing sound, tearing off the black slave's rough linen clothes in an instant, revealing his shiny black skin.

For a moment, the black slave's body was ripped apart.In order to avoid the whip, he rolled to the ground in embarrassment, like a black loach coming ashore.

After a while, his body was covered with blood and mud, and the screams and pleadings could be heard clearly from far away.

"You pigs, let you keep an eye on the sugar cane fields, and you let these damn rats eat so much, I'm going to let you have a long memory today!"

The slave owner kept whipping and swearing.

At this time, a black slave woman couldn't stand it anymore, and she was the one who just made a dangerous statement.

She threw herself on the black slave who was being beaten, and the whip immediately rained down on her emaciated back.She said loudly:

"My lord, for God's sake, spare him! I have a way of dealing with those damn rats!"

Upon hearing this, the slave owner stopped whipping and asked condescendingly:

"Oh? What can you do?"

The black slave girl quickly got up and said:

"We can use hay mixed with paprika, set fire to rat holes, force them out, and kill them!"

"That's it?" The slave owner frowned.

The black slave woman hurriedly continued: "We can also poison the food. These mice especially like to live in groups. If the food is poisonous, other mice will die if they eat it."

"This is also a good idea. Since you proposed it, you won't use the sugarcane field during this period. After a month, I want to see that those damn rats have decreased! Do you understand?"

The black slave woman nodded repeatedly.

The slave owner cast a glance at everyone present, and left with the guards.

The woman lifted the injured person on the ground, looked at the scars on his body, and sighed.

In the days that followed, the slave girl stayed in the dilapidated room thinking about how to get rid of rats.

On the other side, Li Cixin also tried this infinite proliferation ability on animals for the first time.

He was lying on the spot, his ability was activated, and he only felt a tingling on his side.

A sarcoma appeared on the side of his body, and it fell off the ground not long after. At a speed visible to the naked eye, it turned into a giant Jamaican hamster exactly like him.

When the clone was fully grown, Li Cixin suddenly discovered that he seemed to have an extra body.

wrong!It's more like cutting out a part of the soul.In short, there is an extra feeling that I can hardly describe in words.

What's even more powerful is that this clone can actually retain the three abilities of its mother.

But there is also a limit, he can only copy one daughter body a day.

This kind of ability can also be understood. If I use it once a day throughout the year, then after a year, there will be 365 clones.

With so many giant rats with special abilities, they are definitely comparable to a small army.

A week later, Li Cixin took his seven sons and began to carry out missions everywhere.He used various methods to kill black and brown rats.

And the black slave woman who boasted about going to Haikou back then had no choice but to drive the ducks to the shelves, and began to complete the goal of eradicating rats day and night.

It may be that cloning a daughter body requires a lot of energy. Just one Li Cixin ate almost an acre of sugarcane within a week.

Of course he is not that stupid, he just went into the sugarcane forest and picked some sugarcane from a distance to eat.

However, with the passage of time, people with a discerning eye could immediately see the sparse changes in the sugarcane forest, so the black slave women had no choice but to bite the bullet.

Every time she put down the food mixed with poison, Li Cixin would hide in front of him and put the poisoned food in the territory of foreign house mice to prevent Jamaican hamsters from eating it by mistake.

Because of the arrival of the black house mouse and the brown house mouse, the living space of the Jamaican hamster has been squeezed.There are even many burrows, which were originally the territory of Jamaican hamsters, but were invaded by these outsiders.

The germs of these exotic species have also caused a large area of ​​infection and death in Jamaican hamsters.

The black woman's method, coupled with Li Cixin's invisible help, worked quickly.

One month later, the number of Rattus norvegicus and house rats in this area has been significantly reduced.

However, it also brought about a serious problem: the reason why these two kinds of house mice have not been eliminated by humans.On the one hand, their fecundity is terrifying; on the other hand, they are very smart. Sometimes, if they are fooled once, they will not be fooled a second time.

Later, some house mice were able to distinguish the poison, and even a very few individuals developed drug resistance.It really gave Li Cixin a headache.

The black slave woman was not much better. Some of her new methods often worked at the beginning, but they were useless after a long time.However, fortunately, her brain is active and she has been able to think of ways to deal with it.

Therefore, when the rat plague was curbed to a certain extent, the slave owner rented the black slave woman to other slave owners on the island at a high price to show off.

In fact, the big ants that ate baby hamsters were first brought from Cuba in the north by a man named Thomas Leif in 1762.

It's a pity that this kind of ant also has no natural enemies on this island, and eventually became a pest instead.

However, this stupid behavior did not stop, and it happened twice later:

In 1844, a man named Anthony Davis introduced sea toads from Barbados. At the beginning, he also expected this big toad to eliminate rats and control the number of large ants.

The result was to repeat the same mistakes. Although the sea toad also eats rodents and ants, it has little effect.In the end, the treatment failed, and it became a big disaster again.

In 1872, sugar plantation owner Espert introduced 9 red-cheeked mongooses from Tianzhu in order to quell the rat plague.

The method of using mongooses to control rats did achieve very remarkable results at the beginning, and was even widely praised by plantation owners.

Red-cheeked mongooses not only eat rats, but other small animals such as poisonous snakes and amphibians are basically their food.It has brought a huge threat to the survival of other small animals on the island.

There is also a very embarrassing problem, that is, the red-cheeked mongoose usually hunts during the day, but the house mouse is mainly active at night.Therefore, the red-cheeked mongoose has little effect on the control of the number of house mice.

So?Who was lost in the mongoose mouth during the day?

Unlucky Jamaican hamster, of course.They have experienced many times of persecution by big ants, sea toads, poisonous grains and red-cheeked mongooses.

Finally, in 1880, as a native species, they were so pitifully extinct.But the house mice survived tenaciously.

At this time, it was still in the middle and late 18th century, and people had only introduced Cuban ants.Every time Li Cixin sees such big ants, he will use biological slime glue to stick them all.

Or find an ant nest to destroy.

Li Cixin left a few clones, and the mother followed the black slave woman to the new plantation.

That night, the black slave Mary used the oil lamp to draw the mouse trap she guessed.She has never learned painting, and it is even the first time she has come into contact with painting tools, but she still draws decently.

During this time, her performance was greatly appreciated by the slave owners, and she was also rented to a new plantation to exterminate rats.

"Don't you hate?"

Just as she was concentrating on drawing, a voice sounded in her mind.

Startled, Mary discarded the paintbrush, got up and looked around, and said cautiously:

"Who? Who's there!?"

The voice sounded again:

"You really don't want to change these days without freedom? Dear Mary."

This voice sounded out of thin air, but it was full of temptation, just like Satan's whisper:

"I can help you get free, as long as you are willing to help me."

Mary didn't agree immediately, after a long time, she tentatively said:

"Really?"