It is an amino-perhydroquinazoline compound, one of the most toxic neurotoxins found in nature, and was once considered as the most toxic non-protein toxin in nature. Toxin can stimulate intestinal tract locally, and act on nerve endings and nerve centers quickly after absorption, which can block sodium ion channels on nerve excitation membrane with high selectivity and high affinity and hinder nerve conduction, thus causing nerve paralysis and death.
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Extended data:
Distribution of fugu:
In China and Egypt before 2500 BC, it was known that some fishes (takifugu) were poisonous, and the name of takifugu toxin also arose from takifugu. Puffer fish (not puffer fish), which people usually refer to, is a fish of the family Tetrigidae, which generally refers to the fishes of the genus Tetrigidae, Tetrodomorpha and Tetrodidae, and the fish of the family Tetrodidae is the most common aquatic product containing tetrodotoxin. There are 54 species of pufferfish in China, among which 22 species are fugu.
According to Wu Hanlin's investigation, there are 35 species of river bream with different degrees of toxicity in China, among which 24 species are distributed in the South China Sea of China, 3 1 species in the East China Sea of China, including the coastal areas of Taiwan Province, 14 species in the Yellow Sea of China and/kloc-0 in the Bohai Sea of China.
A few species can migrate into rivers, such as Takifugu coronoidus, Takifugu fasciatus, Takifugu ocellatus, Fugu alboplumbeu, and Fugu lagopus.
The annual output of these fish is about 30,000-40,000 tons, accounting for about 70% of the total output of river bream in the world.
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