Recently, large and ferocious alien invasive species - alligator gar - were discovered in waters in many places in my country, in Shanwei, Guangdong on August 26, Qingdao, Shandong on August 27, Kunming, Yunnan on August 29, and Hebei on August 30. Alligator gar can be found in artificial lakes in Shijiazhuang, Haikou, Hainan and other places.
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Why does this ferocious alien invasive species that climbs at the top of the food chain frequently appear in waters in many places in our country? What happened? Was it an honest mistake on the part of those who released the animals, or was it done intentionally? Regardless of the method, we need to be vigilant if alligator gar enter native waters! Why do we say this? Let’s first understand how harmful the alligator gar is.
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The crocodile gar, a ferocious large carnivorous fish, has a history that can be traced back to the early Cretaceous period more than 100 million years ago. It is a standard history A former "living fossil", the crocodile gar is extremely destructive. If released into natural waters, it will bring disaster to the local water ecosystem. "As long as it is a living thing in the water, it will eat almost everything." It has almost no natural enemies in the water and is the top species in the water food chain.
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The crocodile gar is not only ferocious in nature, but also has a particularly strong reproductive capacity. It is said that the crocodile gar can lay about 200,000 eggs at a time, and its eggs are highly toxic and cannot be eaten by other fish, causing it to The survival rate is particularly high. The incubation period of crocodile gar eggs is also very short, only 6 to 8 days, which means that after about a week, hundreds of thousands of baby crocodile gar will appear in the water. It must be said that the title of prehistoric "living fossil" is not unearned. False name.
has previously reported that in order to catch two crocodile gar, Ruzhou, Henan Province drained more than 200,000 cubic meters of lake water and fished them. It can be seen that the crocodile gar, an ancient and ferocious species, has great influence on native waters. How harmful it is!
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Alligator gar appear frequently in waters in many parts of my country. There are two situations:
One is keeping crocodile gar as a pet The people who raised them, after raising them for a period of time, no longer wanted to keep them, and then released them at will; or some people who did good deeds bought the crocodile gar from others and released them; the above two behaviors People like these don’t know much about the dangers of crocodile gar. They release them randomly and it’s an unintentional mistake.
Secondly, some people do it deliberately. These people know that the alligator gar is very harmful, so they deliberately release the alien invasive species alligator gar into the native waters. The purpose is to let this large and ferocious carnivorous fish prey on them. Aquatic organisms destroy the balance of native water ecology, affect the aquatic economy, and in severe cases, even affect the balance of water system ecology.
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In order to protect the natural environment and protect the ecological balance of the water system, whether it is intentional or unintentional behavior, we need to be vigilant. We must not let this kind of random dumping behavior continue to happen. It must be stopped. Let us The balanced development of water system ecology will benefit generations!
