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Thread: the evolution of the knob

  1. #1
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    Default the evolution of the knob

    why do Nepherus all have those little knobs at the end of their tails?
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    Not all species in the genus have knobs at the ends of their tails, just n.amyae and n.asper. I would imagine in these two species the tails have become vestigial appendages due to evolution.
    -Charles Mullen
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    I would think just as with any other species, over time either the extra storage was needed or not needed. The same as when you look at various species of geckos, take the leo and crestie for example. Storage of calories is needed more by the leo then the crestie, more then likely as leos have time of little food available as they are from a much more dry area then the cresties who have more food abundent. This might be the reason for why some knob tails have larger tails, and the others have much smaller tail.
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    Or perhaps it's a lure for insects?

    There's another species of reptile with a funny tail with a knob. Not sure what that ones for either.

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    though no one is sure, I have read that it may have evolved for breeding rituals
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    Brad

    Rhacodactylus Ciliatus
    Rhacodactylus Auriculatus
    Rhacodactylus Leachianus (GTxisle E)

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    Quote Originally Posted by sushigex View Post
    Not all species in the genus have knobs at the ends of their tails, just n.amyae and n.asper. I would imagine in these two species the tails have become vestigial appendages due to evolution.
    They all have knobs... they're just not all as pronounced as amyae and asper because some of them have large fleshy tails at the base. If you look at pics of baby levis before they put a lot of weight on you can see the little knobby at the end.
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    Reading back on this thread...I'll take my mulligan on this one.
    -Charles Mullen
    I'm looking for really nice chahoua.

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