Regeneration?

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s1ren

Guest
I just read these pages: http://www.caudata.org/cc/articles/limb_series.shtml and http://www.caudata.org/cc/articles/limb_series2.shtml

It was great to see such good photos of the whole process. Really interesting stuff!

I had a C.O. lose a leg about five years ago, and the way it grew back was quite different than the photo series and accompanying notes describe:

One of three C.O. that I bought - in very bad condition from a LFS - lost a leg two weeks after I brought it home, due to a fungal infection (the other two died within three weeks of bringing them home). I quarantined it, gave it salt baths, and kept the water very clean, changing it every day.

Instead of this "blastema" forming and growing outward into a new leg, what happened was this: after about two weeks of just a stump, I began to see a little white filament growing out of the stump - after a couple of weeks, I thought it must be a bone, because that's exactly what it looked like: it was white, and appeared stiff, not bending or moving when he brushed it up against the glass or a rock. A few weeks later, the leg began to regenerate in a very similar way to the pictures shown on the websites above; but the flesh grew out over this "bone", which formed while the leg stump was still ragged.

The whole process took about three months total, from leg loss to complete regeneration.

Has anyone ever seen it happen this way? Or was I seeing something else, and misinterpreted it? I'm really curious now
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I *wish* I had pictures to show, but I didn't even own a camera at the time, much less a camera that could have shown such tiny detail.

And I wish I could say that the little guy lived happily ever after: about six months after his new leg finished growing, he used it to escape, and died.

(Message edited by s1ren on February 22, 2006)
 
It's nice to hear a story of a sickly firebelly from a pet shop actually pulling through! Good work!

I think what happened was that the stump got re-injured somehow early in the regeneration process, causing the bone to protrude. Then the limb grew back around the bone. In other words, I think your interpretation is correct, except that the bone didn't grow outward initially, but the soft tissue retracted somewhat around it.
 
I still have the male alpine from the second photo series, and his leg looks much the same (possibly grown a little bit more). I've been meaning to take a photo for a while, I'll post it here when I do.
 
I once had a C.O. that regenerated a leg the exact same way (bone first and then skin). He was poorly kept in a pet store along with two P. waltls, several other C.O.s, and six Bombinas all in a ten gallon!(Also there was a heater in the tank)
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I told the guy I would buy all the newts just to give them a good home. But while he was trying to catch one of the waltls, it managed to get under his undergravel filter and got sucked right into the power head(they were only about 3 inches despite being several years old).He lost half his tail,his whole left foreleg, left eye, and broke his jaw. Also he protruded all of his ribs. Needless to say, I thought he was toast. But I took him home and quarantined him. He hid under a rock for a couple of days and his ribs went back in. Next, he grew skin over all the wounds. His jaw mended first and he began to eat again. I was ecstatic!He then regrew his leg and tail in that order.They were a different color for about a year but now look the same.Finally, he grew a brand new eye! It was sightless at first but now he can see fine! I named him Logan for his amazing healing power and he has since grown to 8 inches in my 55 gallon setup. All the C.O.s made it too.
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OMG! That's AMAZING that he recovered after being damaged so badly! It's a good thing you took him home with you - after being hurt so badly, I bet the store would have just thrown him away.

Logan's a great name for him, hehe - for the healing power and the retractable ribs, LOL (were they made of Adamantium?)
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That's a wonderful story, Jim. I hope the shop didn't make you pay for the waltl after they nearly killed it.
 
I never know that regeneration in Newt actually regenerate the jaw and eyes. I thought it is only for limbs and tails. Amazing!!
 
No, Logan was a freebie. And I thought it was only limbs and tails too. I wish I owned a camera at the time to document the process.
 
OK, here's the male alpine as of yesterday. As I said, not much difference since those last photos just over a year ago...

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Interesting, Caleb. It looks like the regenerated limb never reached a normal length. Is the leg extended as far as it goes in this photo? The leg looks dwarf-like.
 
Yes, the leg is fully extended, every part of it appears smaller than normal. The foot/hand also seems to be permanently turned outwards (it's the sole/palm you can see in the photo).

By the way, feel free to add this to the page with the other photos, if you want.
 
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