On July 7, Tianjin Dongjiang Customs conducted on-site inspections of a batch of imported container boxes transporting tumor horns and horn tips, and found that the cargo contained a large number of spiders with red hourglass patterns on their abdomen. Customs said: Trying to pass through customs in a confused way and enter China.
Spider spider is actually the familiar "black widow", there are currently 32 species in the world, why is his name black widow?
Especially because most of this type of spider is female, after the male and female complete mating, the female spider will kill the male spider and eat the male spider, hence the name Black Widow.
Therefore, in the face of such a fierce female spider, Tianjin Customs attaches great importance to it, and if the spider flows into China, it will have a serious impact on China's ecology. So how powerful is Black Widow?
<h1 class="pgc-h-arrow-right" > how powerful is the "Black Widow" spider? </h1>
The Black Widow spider is fierce, aggressive, extremely toxic, and adept at using poison. However, if bitten by black widow is not fatal, its toxin is more threatening to children and the infirm, causing temporary confusion.
But because of her small size, the Black Widow often goes unnoticed when she bites. Within hours, however, nausea, severe pain, and stiffness begin to occur, and occasionally muscle cramps, abdominal pain, fever, and difficulty swallowing or breathing. Mild poisoning requires timely medical attention, and severe bites are even life-threatening.
In nature, everyone is familiar with the "five poisons", including centipedes, poisonous snakes, scorpions, geckos and toads, scientists have done an experiment to put the black widow and the scorpion together, the black widow took the initiative to attack, and bit the scorpion, it can be seen that the black spider is very aggressive and poisonous.
Although the black spider is highly toxic, ranking fourth among the world's top ten poisonous spiders, although the black widow has a very strong aggressiveness, but the black widow often feeds on pests, from a biological point of view, the black widow is still a beneficial insect. But any animal in nature is a natural enemy bumblebee. This is also a major law of nature, all living things are interdependent and mutually restrictive.
<h1 class = "pgc-h-arrow-right" > distribution and reproduction of "black widows"</h1>
The black widow spider is a very widely distributed large spider, in fact, in China's Sichuan, Hainan, Taiwan, Yunnan, have been found in the Gorgeous Spider; in Xinjiang found the Spotted Spider, they live in separate environments, in nature are living under stones and crevices.
According to expert analysis, the female of the poisonous spider is the most common spider in North America, with a body length of about 2.5 cm, of which the male is relatively small, only a quarter of the female, the toxicity is also weaker than the female, and the male abdomen has another 4 pairs of light red stripes.
According to the understanding, the black widow poisonous spider intercepted this time, the poisonous spider is distributed in warmer regions of the world, while the poisonous spider, kulacawi spider and geometric spider are distributed in the United States. The habits of life are also very special, poisonous spiders mainly live near garbage cans and houses; kula kaviko spiders live on trees or shrubs on the ground.
Because of its black widow spider female life expectancy of 2 to 3 years, female spider life expectancy of 6 to 7 months, causing reproductive ability is very strong, in the case of good conditions 25 to 30 days to lay eggs, a lifetime can lay 5,000 eggs, each nest can hatch for about 12 to 14 days, after 14 days of life spread around, the way of spreading is related to the wind.
<h1 class= "pgc-h-arrow-right" > the dangers of global warming and black widows</h1>
Affected by global warming, many black widows began to migrate, looking for a more suitable environment for living and living, some all the way north, some ran into the courtyard, as long as there is a little cool place for a time there may be black widows.
In Russia, there have been mediterranean black widows who have migrated to residential houses, and when local residents open the door, black widows have no hands to be infringed, and take the initiative to attack, biting and injuring residents.
Because of its strong toxicity, many residents were poisoned after being bitten and sent to the hospital for treatment. Similar cases have occurred, which have often occurred in Russia in recent years.
The main reason for this phenomenon is that the global climate has weakened, not only do humans feel hot, but many organisms have already migrated on a large scale. The purpose is to find some suitable environment for survival.
Once the black widow invasion occurs, it is actually a very dangerous behavior, because the biological invasion is likely to destroy the local ecology, and due to the lack of natural enemies, there will be a large-scale expansion and spread. It can seriously threaten human security.
This is also the customs of our country to strictly control the entry and exit of the pass, to prevent many invasive alien species from entering The Chinese gate, so as to ensure the safety of people's lives and property.