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The Brazilian wandering spiders (Phoneutria spp.)


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15 years 6 months ago #17023 by mark
lol check out this little beastie...

and then take the time to read the comments it was a laugh.

enjoy

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15 years 6 months ago #17026 by Schalk du Plessis
Some of my favorite comments:
epic iPod stand
spider: GOOOOOOAAAAALLLLLLL!!!!!!
holy crap that thing has the most pro-est stance ever! what a clever lil spider!!!
ahahaha at the very start it looks like its giving the fingers roflmao!!

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15 years 6 months ago #17037 by Danny
I love the GF/Wife in the background trying to telling "Meamor!" to stop it he he he he. With something like an OBT or Haplopelma Minax (Thailand Black) this might have ended very differently...

:)

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15 years 6 months ago #17059 by mark
do a wikipedia search on this spider... its a mean and nasty to be sure!


Toxicity

P. nigriventer is the most venomous species of spider.[1][2] Its venom contains a potent neurotoxin, known as PhTx3, which acts as a broad-spectrum calcium channel blocker that inhibits glutamate release, calcium uptake and also glutamate uptake in neural synapses. At deadly concentrations, this neurotoxin causes loss of muscle control and breathing problems, resulting in paralysis and eventual asphyxiation. In addition, the venom causes intense pain and inflammation following an attack due to an excitatory effect the venom has on the serotonin 5-HT4 receptors of sensory nerves. This sensory nerve stimulation causes a release of neuropeptides such as substance P which triggers inflammation and pain.[5]

Aside from causing intense pain, the venom of the spider can also cause priapism in humans. Erections resulting from the bite are uncomfortable, can last for many hours and can lead to impotence. A component of the venom (Tx2-6) is being studied for use in erectile dysfunction treatments.[6]

The amount of P. nigriventer venom necessary to kill a 20 g mouse has been shown to be only 6 μg intravenously and 134 μg subcutaneously as compared to 110 μg and 200 μg respectively for Latrodectus mactans (Southern black widow). This ranks Phoneutria venom among the most deadly found in spiders. Laboratory mice subjected to P. nigriventer venom experienced intense penile erections before succumbing to the toxin.[7]


my question is why????

that poor sandal :P

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15 years 6 months ago #17060 by mark
just like a dude.... more interested in a bug then a moaning spanish girl..... :huh: maybe i just getting old. :P

if any one can please explain the differences in the scientific names... i just noticed and i'm too tired to figure it out :S

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15 years 6 months ago #17062 by Elvis
I've been looking for those fot about 4 years now, and nobody want to get me a breeding pair, they are just cool

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