A highly poisonous living spider " Black Widow " was successfully intercepted at Xiamen Customs! What is this concept? "Black Widow" is one of the most poisonous spiders in the world, is 10 times more poisonous than rattlesnake , one mating can reproduce for a lifetime! How dangerous is it to enter our country? Come and come, pay attention to passers-by, listen to passers-by.
"Black Widow" spider
"Black Widow" is a general term for spiders belonging to the genus Coleus. It is notorious because female spiders often eat male spiders after mating, and the "Black Widow" seized by Xiamen Customs is one of them. The scientific name is " ". However, it remains to be verified whether or not the spiders will eat male spiders. Two times before, the spiders have been seen leaving after mating, without attacking the male spiders.
Spotted spider is a medium-sized spider with a body length of about 10-14mm, a black body and red spots on the abdomen, which are easy to identify. In foreign countries, it is mainly distributed in European countries along the Mediterranean Sea. and Yunnan. They usually feed on various insects, and occasionally small centipedes, scorpions, lice, etc., and usually use nets to fix their prey and then inject toxins.
The "Black Widow" family has a highly poisonous , which is a world-famous venomous spider , and the spider is no exception. Its venom contains a neurotoxin , which contains a variety of active ingredients. Among them is a protein, , which promotes the release of the neurotransmitter , acetylcholine, , which acts on muscles. causes persistent, intense and painful muscle contractions, , which is most severely affected in the muscle areas of the back, abdomen, and thighs. .
How dangerous is "Black Widow"?
The wound will appear redness or urticaria after being bitten by a spider, accompanied by symptoms such as fatigue, dizziness, nausea, vomiting, fever, etc. In severe cases, there will be shock, died of being stung by a spider sting The rate is generally 10%! Generally speaking, the venom of "black widow" spiders is more harmful to children or some infirm.
There have been many reports of people and animals being bitten by "black widow" spiders in my country before. In addition, there was a case of a 15-year-old student in Turks County, Xinjiang, who died of poisoning the next day after being bitten by a "black widow" . There are such cases not only in my country, but also abroad. In 2020, Bolivia 3 boys encountered a "Black Widow" spider while herding sheep. In order to become "Spider-Man", the 3 boys each let the spider bite , the symptoms of poisoning appeared after a few minutes, but fortunately there was no major danger in seeking medical treatment in time. What harm will
"Black Widow" do if it enters my country?
Some people may wonder, isn't there a "Black Widow" in our country, why should it be intercepted? Is it because it is too poisonous? Not exactly, in fact, this is not the first time that my country has intercepted a "black widow". In November 2019, Huangdao Customs intercepted a "black widow" during the quarantine of imported cotton; and in June 2022, Putian, Fujian Province The customs intercepted a live "black widow" during the inspection of imported container logs. There are two main reasons why
intercepted the "Black Widow", is an exotic species , which is a mechanism for speciation to form . The gene pool is mutated, and the same species of will also have different degrees of gene mutation in different environments.
means that although the "black widow" intercepted this time is the same species as my country's, but it is an alien species, it is likely that hybridization will occur after contact, resulting in a new species. It is good to say that some will not cause any harm, such as African elephant , although it is the same species, but there are differences in morphology and DNA, so some scientists have divided them into 3 subspecies.
African forest elephant
African grassland elephant
but the more toxic " killer bee " is different. The "killer bee" was originally a hybrid of a native Brazilian bee and an imported African bee. Brazil originally intended to breed it. A bee that produces a lot of nectar, but unexpectedly has bred a new " Africanized bee ".
This type of bee retains the ferocious nature of African bees. Once any human behavior provokes it, they usually go out in full force. Therefore, the lethal rate of "killer bees" is very high. According to incomplete statistics, there have been more than 1,000 people. People die from 'killer bees' stings.
was stung by killer bees
and these bees are constantly migrating northward, hybridizing with new species to form more dangerous bee species, not only harming the local ecology, but also a great threat to humans. Therefore, in order to avoid new and more dangerous species after the entry of alien species into China, we should "keep it out".
The second is the ability to reproduce , the "black widow" has a strong ability to reproduce, a female spider only needs to mate once in her life, and can lay up to 5,000 eggs, plus it is very poisonous, which will be very harmful to humans or other animals. great threat.
At present, my country has more than 660 invasive species, most of which are plants, followed by animals, and some fungi, protists , etc., which have caused great harm to my country's ecosystem. Therefore, no matter what species it is, as long as it is foreign, it must be strictly monitored and controlled, which is very important!
Alright, that's it for today, pay attention to passers-by and hear passers-by, see you in the next issue.
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