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Sequestering Toxin from Prey
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by nietzsche on February 15, 2010
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Does anyone know of any other species of snake that sequester toxins from prey items besides Rhabdophis tigrinus? I read an article about this where they made reference to Thamnophis, but I have not been able to find any additional information on this phenomena. Any help would be appreciated.
Thank you,
Kelly
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RE: Sequestering Toxin from Prey
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by BGF on February 15, 2010
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It can be safely assumed that other Rhabdophis species do this. Macripisthodon has been rumoured too (which would be convergent) but this has not been substantiated.
As for Thamnophis, I know they bioaccumulate tetrodotoxin but I was under the impression that this was localised to internal organs
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RE: Sequestering Toxin from Prey
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by FSB on February 28, 2010
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I was just getting ready to point that out... :)
Thamnophis is a mystery here - I have heard several firsthand accounts from people [including a very experienced breeder] of mild to moderately severe reactions from garter snake bites, though I have been chewed on by them countless times since kindergarten with no adverse effects at all. I wonder if it could be an allergic reaction with certain people, or the sequestering of toxins from amphibian prey within localized populations?
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RE: Sequestering Toxin from Prey
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by BGF on February 28, 2010
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FSB, garters have a proper venom gland and they chew the venom into their thin skinned frog prey. It is not allergy or sequestering.
The human medical implications are trivial though as we went to great pains to point out in one of our papers: http://www.venomdoc.com/downloads/2003_BGF_Colubroidea_RCMS.pdf
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RE: Sequestering Toxin from Prey
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by FSB on March 1, 2010
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Thanks BGF - guess I have a thicker skin than I thought [or than a frog, at least].
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RE: Sequestering Toxin from Prey
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by pictigaster1 on March 1, 2010
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I recently was talking with one of the largest heterodon breeders in the country.He believes that hog nose do this.He believes that hognose captive born and bred fed mice have no toxin interesting.
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