evolution of colubrids from venomous.

[Lisa]

I posted this in the colubrid forums too

This was just posted at http://www.**************/toxinology/downloads/BGF_Colubroidea_RCMS.pdf but for clicking sake i've reposted it @ http://www.geekgrrl.ca/bgf_colubroidea_rcms.pdf . It suggests that colubrids are evolved from venomous snakes which evolved from boids

I always thought venomous evolved from colubrids not the other way around. BTW Bryon Fry has found some rat snakes to be leathely venomous. the article goes way over my head with some of the compounds of venom but it's mostly interesting other then that.

[reptilesalonica]

Lisa can you PM me the url, cause it wont appeard.
~Greg~

[Gregg M]

Lisa, Dr. Fry is not saying that rat snakes are as deadly as cobras....... They have been found to have some of the same toxins as cobras but it is not in big enough quantities to be dangerous and they are also lacking the delivery system....... So rat snakes in no way can ever harm humans........

[Lisa]

Actually Dr Fry says some are. See his reply to my post in the colubrid forums.
http://www.ssnakess.com/forums/showthread.php?s=&threadid=24022

Greg: I reposted the document at http://www.geekgrrl.ca/bgf_colubroidea_rcms.pdf for ease of clicking.

[Dr. Bryan Fry]

Hi Lisa,

I wasn't saying that some of the ratsnakes would be lethal but some of other 'colubrids' certainly are going to be. But Psammophiinae like Psammophis (Sand snakes) and Malpolon (like the Monpellier snake) have certainly hammered people as have some of the lethal South Americans like Conophis (Road guarders) and Philodryas (South American Racers).

Cheers
B

[SCReptiles]

Bryan, I am very glad to see you have joined this forum. I have been a long time admirer of your work. I loved the piece you did with Chris Harper on Anaphylaxis, one of the better articles I have read. I hope you will be chiming in on a regular basis. For those of you who may not know, Bryan is probably the world’s foremost expert in venom research. He has been featured in numerous television shows on the subject and had an entire spread devoted to him in Reptiles Mag last year. He is a top notch source of information and you can trust anything he tells you. We are very glad to have you here.

[shaggybill]

Wow, its an honor to have you amongst us, Dr. Fry. Like Chuck said, I hope you stick around for some of the discussions we have around here. I'm sure you'll have the answers for many of them.

I would also like to say that I have found your website to be most helpful in answering many of the questions I have about the venom in certain species.

[Dr. Bryan Fry]

Fangs for that guys, I appreciate it. As for the website, I'm in the process of tearing it down and putting it back up again. Just have to find the bloody time! Its coming along nicely. One thing that I am definately going to do is include a webcam of the sea snake tank ;-) That way I can check on my little lovelies at all hours (I am quite fond of them) and other people should get a kick out of it (they are such fascinating animals).

Cheers ;-)
B

[eyespy]

Wow, hearing that we can take a peek at your sea snakes is almost as cool as having you here on the forums, Dr. Fry!

[Gregg M]

Hey Bryan...... What do you think of the site so far???? I am glad To see you posting here....... I told you you would be more than welcomed here....LOL....... Have you spoken to Mark Bayless yet????

[Feed'em All]

As everybody said, It´s an honor 4 me to post an share comments with Dr. Bryan.
Also it amazes me some of the facts exposed inthe tread, and I am speaking about venom toxicity of the philodryas genus.
I live in Argentina, South America and I have read that there is a few documented deaths due to p.patagoniensis and p.aestivus bites, though the text didn't say if the bitten people had allegic reactions.
I'm not exactly proud of the quantity of information on the web about argentinian herps. So if anybody on the forums have questions about our beautiful animals I will be more than glad to help.
Take care everybody, Martin.

[Dr. Bryan Fry]

Hi Gregg,

Thanks heaps for inviting me mate, I appreciate it. Martin, if you haven't read the first article, you can download it from
http://www.venomdoc.com/downloads/BGF_Colubroidea_RCMS.pdf

The followup articles include the one on the isolation and characterisation of the first neurotoxic from a 'colubrid', this was the potent 3FTx from the radiated ratsnake. Among the others include one on the evolution of the elapid 3FTx and one on the crude venom pharmacology of various 'colubrids', some of these guys are well into elapid-level (some of the Boiga are almost as toxic as a death adder!).

Back to working on the webpage ;-)

Cheers
B

[cobraman]

Great to have you aboard, Brian. Thank you again for the paper you e-mailed Ricky and I. Can't wait for your next paper.
Blessings
Ray Hunter