Speaking of the venomous snake that ranks first in domestic toxicity, I believe that most people are not strangers, that is, the "silver ring snake" that sits firmly in the top position in the world of poisonous snakes in China, it is reasonable to say that the snake with such a strong venom should be very rare and difficult to see, but I did not expect that the silver ring snake is the most common poisonous snake in China. Its distribution range is very wide, mainly distributed in Central China, South China and Southwest China, and the number is particularly large, in the southern cities of our country can be said to be everywhere, they are not only wandering in the sparsely populated wild, in the city of the community and residence can also be seen, close to the human living environment, from the appearance alone, the silver ring snake its appearance is not proud at all the first venomous snake.
Silver ring snake in different regions of the name is also different, such as silver wrapped iron, across the base gorge, white snake, etc. are referring to it, it looks very ordinary, just like the non-venomous snake of the snake family as black and white, but also often treated as a non-venomous white ring snake, in fact, it is not difficult to find that it is still very good to distinguish from the non-venomous snake. If you see a black and white snake, but can not distinguish whether it is a silver ring snake, we can count how many white rings on its body, the silver ring snake has more rings, usually about 45-48 knots, non-venomous snakes are usually only about 20 knots, and its ring distribution spacing is narrow and very uniform, not as wide and narrow as other snakes. In addition, the tail of the silver ring snake is very short and thick, and the back bulge looks triangular, like a speed bump on the road, except for the color, it is very similar to the golden ring snake.
The reason why it is called the first venomous snake is not how strong its combat effectiveness is, but simply rely on toxicity, the toxicity test of the silver ring snake is: subcutaneous injection ld50 = 0.09mg / kg, the toxicity is ahead of all domestic venomous snakes, and it has a place in the world's snakes. Many people may not understand what this means, this refers to half of the lethal amount of venomous snakes, that is, 0.09 mg of venom can kill more than half of every kilogram of experimental mice, is the unit of measurement for testing the strength of venom, the smaller the value represents its toxicity, the stronger it is, the current toxicity of the world's first "inland Taipan snake" test results are: subcutaneous injection ld50 = 0.025mg / kg, which can be said to be 4 times that of the silver ring.
However, it is worth noting that the test is usually divided into 4 different injection methods, namely subcutaneous, abdominal cavity, muscle and vein, the toxicity intensity comparison can only use the same injection method, can not take the subcutaneous and intravenous to do the comparison, intravenous injection toxic effect is stronger, the poisoning time will be faster. So the silver ring snake is poisonous and powerful is not blown, often people say that the silver ring snake is docile and does not like to bite people, that is because you did not provoke it, in the southern cities of our country, the number of silver ring snakes hurting people every year can reach hundreds, the number of wounded people in the vipers is in the top three in Our country, especially the biggest threat to the small partners who love night fishing, if docile how can there be such a high frequency of injuries?
Silver ring snake is a cobra family, ring snake genus of highly venomous snakes, with a strong nocturnality, perhaps a large number of food shortage, may also come out hunting during the day, it is also a good swimmer snake, mainly inhabiting the river and near the creek, preying on small fish, shrimp, loach, frogs, toads and other snakes for food, sometimes will also drill into the fish protection, night fishing partners will be injured by it if they are not careful. Silver ring snake has a strong phototropism, but also increase the chance of humans and it meets, if you encounter do not go close to the flashlight to shake it, so as not to disturb it to launch a counterattack, snakes generally will not attack creatures much larger than their own size, unless it is felt that you are a threat to it, even if you are just an unintentional move, so go out fishing at night must wear rain boots, silver ring snake teeth are small, is not wearing rain boots.
The silver ring snake has a neurotoxin type and a high lethality rate, but its detoxification is low, averaging only 4.5 mg, and if the amount of detox is the same as that of the five-step snake, it is estimated that it can kill the king cobra in a second. Many people think that the silver ring snake bite is not painful or itchy, there will not be too many poisoning reactions, today we will take a look at the real experience of being bitten by the silver ring snake, perhaps you can get a further understanding, if you are accidentally bitten also know how to deal with it. According to a patient who was bitten by a silver ring snake, he was not unconscious by the silver ring snake bite, the wound will have a very stinging feeling, especially when squeezed, and then the wound around the wound began to numb, gradually losing the pain, which is the effect of neurotoxins.
The venom slowly spreads to the entire arm, resulting in the arm and palm has been completely unconscious, this time remember to remove the watch, ring, bracelet and other jewelry on the body, fortunately, the silver ring snake wound will not appear swollen, if the swelling of these jewelry is easy to cause local necrosis. Then the venom spreads to the whole body, causing limb weakness, strong vomiting, dizziness, swallowing numbness, etc., has been unable to walk independently, about 1 hour or so will appear this symptom, if you are alone in the wild, it is best to wait for rescue in situ, do not run at will, otherwise the toxic attack will accelerate, will put yourself in a more dangerous situation.
About 2 hours, the body has been unable to move, even open mouth to speak can not do, the mouth will continue to secrete saliva, can not swallow it will flow with the mouth at will, before the whole body paralysis, remember not to lie flat or sit down, it is best to find a comfortable position to lie down and open the mouth, let the saliva flow out to keep breathing smoothly, tell the partners around you in advance not to let yourself lie flat, even in the car, otherwise you will be choked by your own saliva first. Then there will be respiratory muscle weakness, unable to breathe freely, this time is already very dangerous, in a state of imminent death, you must use mechanical ventilation as soon as possible, but your consciousness is still very clear, you can feel your own state and the actions of the people around you, but you can't communicate with them or make physical movements to express your thoughts.
Therefore, the silver ring snake bite is not without feeling happy, this way is very painful and unbearable, can only watch yourself step by step into the abyss, want to seek help can not express, just like when you run in your dreams, the feeling of weakness of the heart is the most uncomfortable. If bitten by the silver ring snake must contact the hospital at the first time, let them prepare the serum and ventilator, the average fatal time of the silver ring snake is 2-6 hours, people with weak constitution or venom allergies are faster, it may be fatal within 1 hour, because the frequency of injury is high, China now has a large number of silver ring snake serum reserves, as long as it is timely, complete cure or no problem.