I was recently stumped by the following question: why do the single belly scales become double scales on the tail? I guessed that it's probably just a continuation of the split on the anal scale. Anybody know of more solid theories? Regarding the single belly scales, I said they were useful for crawling and climbing which I'd heard somewhere. Any better ideas there?
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scale purposes
reuben
Jan 11, 2004 04:21 PM
Replies (2)
meretseger
Jan 11, 2004 05:20 PM
Many snakes have single tail ventral scales. Just one of those things I guess. The single belly scales are what enables the snake to crawl, basically. Aquatic snakes that are missing them are virtually helpless on land.
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"The serpent crams itself with animal life that is often warm and vibrant, to prolong an existence in which we detect no joy and no emotion. It reveals the depth to which evolution can sink when it takes the downward path and strips animals to the irreducible minimum able to perpetuate a predatory life in its naked horror."
Alexander Skutch
LdyPayne
Jan 12, 2004 12:49 PM
the single belly scales allow the snake to grip the surface they are on. Just gently rub against the scales you can immediately feel how firmly they can grip whatever the snake is on. It keeps them from sliding backwards and gives them something to 'push' against to move forward.
As for the split scales past the vent, I dont' think it serves any particular purpose but i ccould be wrong here.
