phonutria sac when to pull and how to know if its furtile?

Fran

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Good Argument Venom just by reading your reasoning and belief really convinced me that we should have this wondering spiders in the U.S. hobby. Your a good debater bro :)
Fail to see what does that have to do with making available extremely dangeorus animals with no control at all.

I guess us, the sissy Europeans learn before the crap hits the fan, and some Americans need to swim on it before learning that it was crap.
No offense intended.BTW.
:?
 

Terry D

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Fail to see what does that have to do with making available extremely dangeorus animals with no control at all.
:?
Fran, excellently put! I'm all for the ability to be able to keep hots but there needs to be SOME type of control- be it a test, background check or whatever. I mean we're not exactly talking about a person who would give up essential liberty to purchase a little safety here. We're talking about the faceless, precocious-minded kid online with mom's cc and no other inkling about keeping Phoenutria other than "they're really cool!" :embarrassed:. My half-cent.

Terry
 

hassman789

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I don't know much about this spider at all except it's venom is really powerful! And Even though I know nothing about it I still think it is a bad idea to have these in the hobby. I'm not sure if this is a good comparison but if I have my facts straight, isn't this how there got to be the big snakes (I don't know what kind, I'm not a snake person) and some kind of moniter lizards got into florida? Whether it was from irresponsable people or and accident of some sort, it happened! And those snakes might really mess up the eco system (if they havn't already). And do they even carry an anti-venom in america for spiders that aren't native to america. What if we had those things running rampid in florida (don't know alot about them, so I'm not sure if its possible) But hey, what if... Just sounds like a bad idea IMO.:?
 

John Apple

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All kinds of regs out there allready on hots in the state -local levels ....yup that is what we need ....more tree hugging idiots saying that python reguis can survive on up to the Ohio river....or that all constrictors are bad...yup that is what we need...regulation on theraphosids and true spiders....where will it stop...oh wait ...B. emelia has been reputed to have a somewhat reactive bite....not to mention all the lats in captivity or macrothele or poecilotheria or even loxoceles...anyone for sicarius...I plan to keep all kinds of spiders...hot ones and not hot ones..[ even have a few nice steatoda as pets]...that is why I live in the USA...see where I am going with this....yeah regulations....sheesh...the simple one track minds:rolleyes:
what about the person with ten dogs or 9 bee hives...it is their right to have such quantities
 

Fran

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The people who believe these dangerous animals should be available for the hobbyst without any kind of permits or regulations including full responsability is either because is VERY inmature or just not very bright.
 

Terry D

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John, I will agree that regulatory control regarding many issues can trend toward cancerous.

However, Lacking any regulation whatsoever, let one rich senator's kid get bit and they're gonna throw the baby out with the bathwater. I'm talking about your baby.

This hobby, although unfairly and with much hyper-superstitional prejudice (for current lack of a better word to describe it), is not exactly looked on by the public with warmth and endearment. I think that having some form of well-though-out regulation already in place could shut the doors on sudden pandemonium and rash action by our lawmakers if such an event ever occurs. I'll say no more.

Terry
 

BlackCat

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Agree with Fran.

Is there an actual reason to keep Phoneutria other than.. what, it makes you feel like a BAMF?

Seriously though, I want to know. Is it the reason I stated above? Because you can? Just because you like them? Because you're studying them or their venom for some reason or another?

I would think it is a lot like keeping guns, except that, if I leave my gun loaded with the safety off (ie: accidentally leave the enclosure lid open or unlocked), a bullet isn't going to walk out of the barrel with the potential to kill.
 

John Apple

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Agree with Fran.

Is there an actual reason to keep Phoneutria other than.. what, it makes you feel like a BAMF?

Seriously though, I want to know. Is it the reason I stated above? Because you can? Just because you like them? Because you're studying them or their venom for some reason or another?

I would think it is a lot like keeping guns, except that, if I leave my gun loaded with the safety off (ie: accidentally leave the enclosure lid open or unlocked), a bullet isn't going to walk out of the barrel with the potential to kill.
when it gets right down to it...the exact same thing can be said about buthids, latrodectus, sicarius and the larger than ever amount of different dangerous snakes [bushmasters anyone] in captivity...those very same folk have them for the simple reason they find them fascinating and did the proper research on captive requirements....of course there are those that should not have a garter snake let alone a phoe...but they still have them...this is not a dictatorship...simple...no not really...that is another reason we have afraid of the rain kinda people....don't go out...it's raining and you will get wet
absolutely corect on your gun theory unless a child picks up the gun you left out, loaded with the safety off
 

BCscorp

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As pointed out, there are already many different critters in captivity that could be very harmful, and really, not many examples of negative consequences (being bit/dying) etc. So, as long as dealers arent selling hot species to kids or irresponsible people, I guess people should be able to keep whatever they want.
In no way is my opinion influenced by egocentric American ranting.....:}
Just the fact that there are already many buthids, phoneutria etc etc already being kept.
Hopefully a "worst case scenario" never developes due to improper/irresponsible care of a hot species.
 
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delherbe

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Hi Fran,

as it looks like you are the expert on Phoneutria just a question.

How venomous is a Phony?

BTW: Cobras and Puffadders are another league... You have Loxosceles in America.. Damn. This critters are scary.
 

blacktara

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Hi Fran,

as it looks like you are the expert on Phoneutria just a question.

How venomous is a Phony?

BTW: Cobras and Puffadders are another league... You have Loxosceles in America.. Damn. This critters are scary.
This whole arguement starting with whether folks should be allowed to keep these animals, on to who gets to decide where the lines are drawn, and on to how big the real threat is from Phoneutria has all been played out before

Fran has very strong opinions. He has been presented with referenced materials regarding Pho toxicity and the threat from a bite. He gets angry and says anyone who thinks this spider doesnt pose a major risk to life and limb is crazy

Facts wont change the opinions here

This thread is, at this point, a waste of bandwidth
 

Earthworm Soul

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"Kids" and novices are not going to buy Phoneutria if the community of hobbyists does its job educating them and encouraging responsible decision-making about what to keep, and what to put off for later. That's our job as experts.
I am not disagreeing with you in principle, I think if you get killed by an animal, it is YOUR fault and no one else should have to suffer the consequences for another persons stupidity....

However, judging solely the merits of many members of this very board, Phoneutria really are a timebomb. It is very disappointing, I'd love for this species to be easily available to people who wish to keep them, but we're lucky they aren't more common, since there are a lot of irresponsible people in this hobby. I've read threads here where people talked about selling Scolopendra, Babycurus, Poecilotheria, etc to 13 year olds, and people free-handling LQ's and Androctunus... it's pure stupidity.

The only reason this hobby isn't more closely scrutinized is because it is so small... all it would take is one widely publicized screw-up to start the fear train a-rolling.
 

Earthworm Soul

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This whole arguement starting with whether folks should be allowed to keep these animals, on to who gets to decide where the lines are drawn, and on to how big the real threat is from Phoneutria has all been played out before

Fran has very strong opinions. He has been presented with referenced materials regarding Pho toxicity and the threat from a bite. He gets angry and says anyone who thinks this spider doesnt pose a major risk to life and limb is crazy

Facts wont change the opinions here

This thread is, at this point, a waste of bandwidth
Your response is as overly simplistic as your ignorance and racism are repellent. If you are seriously trying to dismiss the potential danger of a Pho bite, you are a fool. I do not agree 100% with the way Fran is presenting his points, but he is definitely making a better argument than most.
 

Fran

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Your response is as overly simplistic as your ignorance and racism are repellent. If you are seriously trying to dismiss the potential danger of a Pho bite, you are a fool. I do not agree 100% with the way Fran is presenting his points, but he is definitely making a better argument than most.
Thanks.
Is funny the way you described him, spot on. :)

No matter my opinions, its possible that they become easily available.

I will just shake my head and roll my eyes everytime I hear that some punk got bitten,or the animal escaped...They are contributing to the whole ban of these animals. So lets all thank them.
In the end, thank to all thse inmature people who see no problem to have ZERO CONTROL on dangerous animals, we will have to be happy keeping hamsters. It will happen, just a matter of time.
 

blacktara

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Your response is as overly simplistic as your ignorance and racism are repellent. If you are seriously trying to dismiss the potential danger of a Pho bite, you are a fool. I do not agree 100% with the way Fran is presenting his points, but he is definitely making a better argument than most.
Bottom line is this. A Phoneutria bite is likely to be an unpleasant experience. The chance of it posing any real threat to ones life or long term health is remote unless the bite victim has serious preexisting medical issues
 

delherbe

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:clap::clap: Best reply yet. Lol!
Hi,

I`ve done my homework... And this it what I would call "facts". (I am to lazy to translate it to english...) Nigriventervenom is extremely heavy, but the venomglands of an adult female just have between 1 and 2mg. And the quantity they give with a usual bite is about 0,4mg. The venom is one of the most hurting ones in the animal world but in this case you cannot associate heavy pain with the lethally.

In my opinion this spiders are not half that dangerous people tell that they are. The LD50 ist extreme but the quantity is the interesting part. A big snake with Phoneutriatoxin would kill a human 10 times....

A P.fera with nigriventertoxin would be the world most dangerous spider because of the quantity they have.

P.nigriventer (Keyserling, 1891):

Das Toxin von P.nigriventer differiert in seiner Toxizität nicht unerheblich bei den Geschlechtern. So bewegt sich der LD50 Wert für Mäuse bei adulten Weibchen der Art im Bereich zwischen 0.3 und 0.63 mg/kg i.v. wohingegen das Toxin adulter Männchen mit einem Richtwert von "lediglich" 1.57 mg/kg i.v. weniger als die Hälfte an toxischem Potenzial vorweisen kann. Angemerkt sei an dieser Stelle dass Primaten, insbesondere der Mensch, dem Toxinbestandteil PhTx1&2 gegenüber eine 4-5 fach höhere Sensibilität vorweisen als dies bei Mäusen der Fall ist.

Interessant hierbei ist das Gegenüberstellen der Art mit einem angehörigem der Familie der Hexathelidae, erweist sich diese Geschlechtsabhängige starke Variation der Toxinpotenz als konträr zur Situation bei Atrax robustus, bei denen die Männchen mit dem wirkungsvollerem Toxin ausgestattet sind.

Nicht weniger interessant ist die Relation von Entwicklungsstand und Toxinpotenz bei P.nigriventer. Liegen die Werte von Tieren in jüngeren Stadien hier zum Teil in Bereichen um die 3.28 mg/kg i.v..

Aus der Information das P.nigriventertoxin innerhalb der Gattung Phoneutria als dasjenige mit dem höchsten Anteil an für Primaten hochpathogenem PhTx1&2 angesehen wird lässt sich ableiten dass sich die Werte der restlichen, derzeit beschriebenen Arten, im Bereich unterhalb der oben genannten bewegen, und dies zum Teil drastisch wie z.B. für P.boliviensis und P.fera nachgewiesen.

Nicht außer Acht gelassen werden sollte der Hinweis dass P.nigriventer nicht die Phoneutriaart mit der höchsten Toxinquantität ist und mit 0,4mg, im medizinisch interessanten Teilbereich der bei einem Biss durchschnittlich abgegebenen Injektionsdosis, von der weitaus weniger toxischen Art P.fera mit durchschnittlich 8mg um Längen geschlagen wird.

Die Giftdrüsen von adulten P.nigriventer Weibchen fassen Angaben zufolge 1079 μg Toxin, was 1,079mg entspricht.

Schenkt man obigen LD50 Werten glauben, und nimmt Rücksicht auf die höhere Empfindlichkeit des Menschen gegenüber dem Toxin von P.nigriventer, wird bei einer Berechnung mit einem LD50 Wert von 0,09mg/kg Mensch, theoretisch eine Dosis von 6,3mg benötigt um einen von zwei 70kg schweren Menschen zu töten. Das wäre theoretisch die 6 fache Menge die dem Tier zur Verfügung steht.

Stellt sich also berechtigterweise die Frage inwiefern ein Biss von P.nigriventer, bei einem gesunden erwachsenen Menschen, lebensbedrohende Ausmaße annehmen kann?


Quellen für die gemachten Angaben sind die Abstracts von:
Intersexual variations in the venom of the Brazilian ‘armed’ spider Phoneutria nigriventer (Keyserling, 1891)
http://www.sciencedirect.com/scienc...serid=10&md5=eb93f883284a3001ad384e54845c037e

Ontogenetic changes in Phoneutria nigriventer (Araneae, Ctenidae) spider venom
http://www.sciencedirect.com/scienc...serid=10&md5=327383df21f777c209d3a10a4d195215


Im Artikel "Journal of Venomous Animals and Toxins including Tropical Diseases" lässt sich folgendes nachschlagen:

The actions of P. nigriventer venom are better understood in vertebrates; mice seem to provide the better physiological and pharmacological systems for assaying this venom (19). Despite this venom not being lethal to mammals, it has impressive toxicity to mice, LD50=200µg/kg (0.2ng/mg) is about 218 times lower than that necessary to cause paralysis in Gryllus assimilis.
Und auch dies hier:
Phoneutria nigriventer has about 2.15 mg of venom in its glands
Hieraus Schlussfolgernd ergeben sich folgende theoretischen und variablen Werte:
LD50: 0,2mg/kg Maus - in etwa 0,05mg/kg Mensch
Quantität: in etwa 2mg
Tödliche Dosis für einen von zwei 70kg schweren Menschen mit den aus dieser Arbeit hervorgehenden Werten läge demnach bei 3,5mg. Selbst mit diesen sehr extremen Angaben wäre es dem Tier im rein theoretischen Bereich, selbst mit Abgabe der vollen zur Verfügung stehenden Giftmenge, nicht möglich einen gesunden erwachsenen tödlich zu intoxinieren.

Dies erklärt in meinen Augen die im Verhältnis zur vorhanden Menge an jährlichen Bissopfern sehr geringe Letalität zur Gänze.

Aus folgender Statistik geht hervor das lediglich bei Kindern unter 10 Jahren mit schweren Vergiftungen zur rechnen ist:
(N steht hier für die Anzahl von Bissopfern die hier berücksichtigt wurden)


Quelle:
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652000000100003&lng=en&nrm=iso




Das Copyright dieses Textes liegt alleinig beim Autor. Eine Verbreitung ist nur mit ausdrücklicher Genehmigung gestattet. :cool:
 
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blacktara

Arachnobaron
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355
Thanks.
Is funny the way you described him, spot on. :)

No matter my opinions, its possible that they become easily available.

I will just shake my head and roll my eyes everytime I hear that some punk got bitten,or the animal escaped...They are contributing to the whole ban of these animals. So lets all thank them.
In the end, thank to all thse inmature people who see no problem to have ZERO CONTROL on dangerous animals, we will have to be happy keeping hamsters. It will happen, just a matter of time.
Tell me this. What percent of Phoneutria bites result in anything more than discomfort and perhaps some mild systemic symptoms?

And there is also this - you act like if theres an escaped Phoneitria out there that the community is in mortal danger.

Where these spiders are native, what percentage of Phoneutria do you think ever bite a human?

If someone has a Phoneutria and it escapes, 95%+ chance theres never a human encounter, much less a bite, much less a significant bite, much less a bite thats a real threat to life or well being

To compare this spider to a highly venomous herp is inane
 

Earthworm Soul

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Hi,

I`ve done my homework... And this it what I would call "facts". (I am to lazy to translate it to english...) Nigriventervenom is extremely heavy, but the venomglands of an adult female just have between 1 and 2mg. And the quantity they give with a usual bite is about 0,4mg. The venom is one of the most hurting ones in the animal world but in this case you cannot associate heavy pain with the lethally.
Those were written in 1891. People used to think boomslangs were not lethal too.
 
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