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evolution of the rattle


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Posted by east coast dave on April 23, 2002 at 23:03:18:

greetings. i can't remember the last time i posted to this forum, but nevertheless i have a question for you rattlesnake gurus.

saw the jeff corwin experience recently, and again (i seem to recall him saying this on more than one occasion) this guy goes into the >antiquated< explanation of the evolution of rattles as a way of protecting early rattlesnakes from large, boisterous ungulates that may trample them, i.e. buffalo.

i certainly do not believe everything i hear on tv, but this guy does seem to have at least some semblance of a background in science. i do not recall where i read this, but hasn't this theory been dismissed as not really holding any water? particularly, aren't modern rattlesnakes much more abundant and speciated in habitats that would never have been inhabitated by buffalo? is there really any hard evidence to suggest that rattlesnakes originated in the grassland prairies of north america?

anyone have any references in the current literature/thinking? or perhaps just some personal opinions.

in any case, i'm curious what you think.

ecd


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