Species invasions are actually a very common occurrence on a global scale. Although there are countless species of organisms on the planet, these are distributed all over the world, with some species being endemic to certain areas and not present in others, and others having a relatively wide distribution. When some species appear in places where they would not have previously existed, this is when the species may become invasive.

There are several possible outcomes for an invasive species. The first is that the invasive species will live in harmony with other native organisms and survive well; the second is that the invasive species will not be able to survive in its new habitat and will be eliminated; the third is that the invasive species is so strong that it poses a serious threat to the native ecosystem. At this point, humans may have to step in and deal with it.

When it comes to invasive species, i'm sure many of you know about the burmese python in the united states. That is a large snake that lives mainly in southeast asia, and when they arrive in areas like the united states, they multiply rapidly and eventually become widespread. So the united states began to hunt these burmese pythons. In florida, the united states captured a burmese python that was 5.5 meters long and weighed 200 pounds, which was the largest burmese python ever caught in florida and required three men to carry it.

Since we cannot predict what kind of challenges these invasive species will pose to the ecosystems of these places once they reach a new habitat, and since some invasive species may be toxic, they are usually dealt with when the first signs of them are found. This is not the case, some live poisonous spiders black widows from outside the country have been intercepted at customs, if bitten by these poisonous spiders may be fatal, how poisonous are these spiders?

Customs intercepted live poisonous spiders black widows

During the customs inspection of imported container logs, a live spider was intercepted along with four messy sacs. After identification, the spider was confirmed to be the interspecies koala spider commonly known as the black widow.

Some of you may think that spiders are a very common small insect, and that a spider found in an imported container log is really that serious? If it was a small insect in general, it wouldn't be a big deal, but the point is that the intercepted interspecies is one of the 10 most toxic spiders in the world, and it is 15 times more toxic than the venom of a rattlesnake snake. In this case, we probably know that the spider is extremely poisonous. Because of its extreme toxicity, the spider kills people and animals every year, so it is definitely something to take seriously when this spider is found.

The discovery was not only of a live mct spider, but also of four egg sacs, each containing 400-900 eggs, which means there could be several thousand eggs in four sacs, and if all these eggs managed to hatch, it would still be a serious situation and they might not be so easy to find. By finding them at customs and intercepting them now, we have cut off the source of these spiders from entering our territory.

The spiders are called 'black widows' because rumour has it that after mating, the females will eat the males, hence the name 'black widow'. However, in the study, the researchers placed both male and female mcts in the same container, but there was no sign of the females killing the males, and after mating, the males left quickly and the females did not actively 'chase' the males.

The fact that the female is not found to be actively 'hunting' the male does not change the fact that their venom is poisonous. The venom of the araneae contains a protein neurotoxin that acts on vertebrate synapses, and if we are bitten by one of these spiders, we will experience a massive release of neurotransmitters, pallor, redness, or hives, as well as a range of symptoms such as weakness, nausea, vomiting, and in severe cases, shock, respiratory distress, and possibly death from respiratory failure or heart failure. Or heart failure. Therefore, if we come across these poisonous spiders, we should not tease them.