what is the most deadliest spider?

Question

what is the most deadliest spider to humans and wild life?

Answer 1

The most deadly is the male Sydney Funnel-Web Spider which originated from Australia, they carry atraxotoxin, the world's most dangerous toxin to humans and wildlife...thanks to anti-venom people now surive their deadly bite.

Answer 2

As you have read it's a pretty even toss up between the Brazilian Wandering spider and the Australian Funnel Web. Both have incredibly powerful venom that will most likely kill you if bitten.

However, spiders you CAN take off the list are Black Widows, Brown Recluse, and Daddy Long Legs.

Black Widows have an extremely powerful venom and horribly painful bite. Mortality is often less than 1% in grown people, but can be very painful and progresses rapidly starting with a red streak of infection and sometimes leading to a hardened abdomen. However, many people show little effects of the poison aside from a huge red mark and the lingering sting. But if a severe reaction occurs, many hospitals carry the antivenin.

Brown recluses have a painless bite. Their pedipalps actually pinch the skin to make the bite painless as a nurse does when injecting into your arm. Their poison is only truly dangerous in about 20% of people. An antivenin is also available for brown recluse but must be administered in less then 30 minutes of the bite. Due to it's light "touch", most people don't realize they have been bitten by a recluse unless a) they have a severe reaction or b) they actually stick their finger in the web, corner it, and prod it, and make it aggressive.

Both the Black Widow and the Brown Recluse will go to great lengths to avoid contact with humans. Both will only bit when rolled upon or threatened. Black Widows are only aggressive if they have an egg sac.

Daddy long legs - strong venom, but not to humans. Ignore the "mouth parts to small" thing. It's a myth.

Answer 3

The deadliest spider, in terms of venom potency, is the Brazilian Wandering Spider. Native to different regions of South America, it is named as such, due to being discovered in the jungles of Brazil. It does not make a web, but hunts it's prey on the ground, thus the name Wandering. A very small amount of venom from this spider, about .00002 ounces is enough to kill a small rodent. The Brazilian Wandering Spider is also very aggressive. It will not openly attack a human, but it will not hesitate to bite should it feel threatened, whether intentionally or not. They are also large spiders, 4-5 inches, including their legs. This is one of the few that should not be approached.

Keep in mind, most spiders, are completely harmless to humans. Yes their bites can be a bit painful and a nuisance, but the good that spiders do far outweighs these inconveniences. Don't kill spiders whenever you can avoid it.

Answer 4

Well the most venomous spider in the world to primates is the Male Sydney Funnel Web, it has venom that is 4 times more potent then the female and often wander into houses in summer in search of a mate. There are no recorded deaths by the Sydney Funnel Web since the anti venom was introduced. It has venom that by accident is extremely deadly to humans, it does not see us as prey but the venom has a chemical that primates are vulnerable to. That is why you never hear of many cases involving animals being killed by a bite. I know people who tell stories about how their dogs and cats kill and eat these spiders. The substance that they have that is deadly to primates is known as robustotoxin. The Sydney Funnel Web when confronted with danger would rear up showing large fangs and a red underbelly, the upside about these spiders are that they can not bite unless reared up. These spiders always release venom with a bite and a lot of it, if they miss a bite the venom falls off their fangs onto the ground.

The most dangerous venom that does not include primates is the Brazilian Wandering spider. As everyone else has stated about them holding the record in the Guinness book of world records.

And forget the myth of the daddy long legs spider being most venomous. They are venomous but not as venomous as others.

In conclusion it is the Sydney Funnel Web to primates and to others is the Brazilian Wandering Spider.

Answer 5

It depends. Some spider toxins are incredibly dangerous, but the spiders are very small and have difficult in biting a human. The black widow is a big spider so it can give a fatal bite to a human. The brown recluse will give a very painful bite, but it is rarely fatal to humans.

According to the Guinness Book of Records the world’s most venomous spiders is the Brazilian wandering spider (Phoneutria nigriventer). This spider is believed to have the most active neurotoxic venom of any living spider. Its venom is so potent that only 0.006mg (0.00000021oz) is sufficient to kill a mouse. it is quite a large spider and it can bite humans.

Answer 6

Brown recluse Spiders in the united states are one of the deadliest. The Brazilian Wandering Spider on the Coast of Vancouver Island was found to be the other deadliest.

Answer 7

Most spiders are unlikely to bite humans because they do not identify humans as prey. Spiders, even small ones, may however bite humans when pinched. For instance, a common jumping spider (Family: Salticidae), around ⅜ inch (1 cm) long, when pinched between the folds of a human's palm may inflict a bite that is about as painful as a bee sting.

Spiders in the world which have been linked to fatalities in humans, or have been shown to have potentially fatal bites by toxicology studies of their venom, include:

The Brazilian wandering spider
The Australasian funnel-web spider
The widow spiders, including the Australian redback spider
The six-eyed sand spider, and possibly other spiders of genus Sicarius
The recluse spiders
Spiders which likely are not deadly to humans, but which are nonetheless medically significant include:

The hobo spider (this is doubtful, however)
The yellow sac spider
Certain species of tarantulas
The false black widows
Spiders which can inflict painful bites (often similar to a bee sting), but whose bites generally do not cause any systemic or long-lasting effects, include:

The huntsman spider
The redback jumping spider (not to be confused with the very dangerous redback spider, the latter being one of the widow spiders).
None of these spiders will intentionally "come after you," but they should be removed from one's house to avoid accidental injury. Many authorities warn against spraying poisons indiscriminately to kill all spiders, because doing so may actually remove one of the biological controls against incursions of the more dangerous species by ridding them of their competition.

If dangerous spiders are present in your area, be mindful when moving cardboard boxes and other such objects that may have become the shelter of a venomous spider. There is no need to be fearful; just do not grab a spider.

Answer 8

Did you know that ALL spiders are poisonous? Some, like the Daddy Long Legs, have fangs that are so small they cannot bite humans. A lot of them can cause pain and necrosis, but I think the Black Widow is the only one that can kill a human. I've been bitten by a Brown Recluse - my leg swelled up to double normal size.

Answer 9

"Typical listings for deadliest spider include the Brazilian Wandering Spider, which occasionally shows up in cluster of bananas in the US, the Funnel Web Spider, which lives in Australia, the Hobo Spider, which can be found in the US, and the Brown Recluse. "

http://www.wisegeek.com/what-is-the-deadliest-spider-in-the-world.htm

Answer 10

Actually there is no definitive answer to your question as scientists have been in debate about this subject. In actuality it is really hard to say because the comparison of poisons and their toxicity greatly varies among spiders with the type of venom. AND EVEN humans in general becasue we do have different immune systems and allergic reactions can happen to certain people with ceratin bites

This is a rather difficult question to answer as there are actually a number of very venomous spiders in the world, all of which have caused human deaths (in some cases the reported cases are anecdotal rather than scientifically recorded).

Of those, the Black Widow Spider (Lactrodectus mactans) of North America is the most well known of the so-called deadly spiders. Other members of the Lactrodectus family are found throughout many temperate parts of the world, such as Australia where it is known as the Red Back spider and New Zealand where it is known as the Katipo spider.

The Sydney funnel spider (Atrax robustus) of Australia is often quoted as being the spider with the most dangerous venom.

On the other hand; according to the Guinness Book of Records the world’s most venomous spiders is the Brazilian wandering spider (Phoneutria nigriventer).

This spider is believed to have the most active neurotoxic venom of any living spider. Its venom is so potent that only 0.006mg (0.00000021oz) is sufficient to kill a mouse.

In the southern U.S there is also the brown recluse


Personally I would say the Sydney funnel web spider.



In contrast to daddy long legs being the most poisonous; there is one problem;
Most folks who retell this tale have no idea that they are referring to two completely separate groups of animals: "daddy-longlegs" and "daddy-longlegs spiders". In the animal class Arachnida, there are several lower level divisions called Orders. Scorpions are in the Order Scorpiones, spiders are in the Order Araneae, ticks and mites are in the Order Acari.

The creatures most correctly called daddy-longlegs are in their own separate Order which is Opiliones. Common names for this Order are 1) daddy-longlegs, 2) harvestmen and 3) opilionids. They are characterized by having one basic body segment which shows segmentation on the posterior portion, at most 2 eyes and all 8 legs attach to the pill-like body segment. They are usually found under logs and rocks, prefer moist habitat although they can be found in the desert, often have long flexible legs (in the temperate Northern hemisphere but there are also short-legged daddy-longlegs) and they do not produce silk so therefore they are never found in webs unless they are being eaten by spiders. Because they are found under logs and other stuff which people most often are not turning over, most folks don't run into daddy-longlegs very often.

Another creature often called daddy-longlegs are actually spiders. These long-legged spiders are in the family Pholcidae. Previously the common name of this family was the cellar spiders but arachnologists have also given them the moniker of "daddy-longlegs spiders" because of the confusion generated by the general public.

Here, the myth is incorrect at least in making claims that have no basis in known facts. There is no reference to any pholcid spider biting a human and causing any detrimental reaction. If these spiders were indeed deadly poisonous but couldn't bite humans, then the only way we would know that they are poisonous is by milking them and injecting the venom into humans. For a variety of reasons including Amnesty International and a humanitarian code of ethics, this research has never been done. Furthermore, there are no toxicological studies testing the lethality of pholcid venom on any mammalian system (this is usually done with mice). Therefore, no information is available on the likely toxic effects of their venom in humans, so the part of the myth about their being especially poisonous is just that: a myth. There is no scientific basis for the supposition that they are deadly poisonous and there is no reason to assume that it is true.

Answer 11

Funnel Web-Spider