Low temperature behaviour.

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Re: Low temperature behaviour.

Postby Joan » Wed Mar 21, 2012 10:34 am

Tortoise Trust wrote: :o :o :o



Indeed!

Now totally puzzled! :? :o

Looking forward to the next instalment.
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Re: Low temperature behaviour.

Postby Tortoise Trust » Wed Mar 21, 2012 2:18 pm

New data added.
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Re: Low temperature behaviour.

Postby Stuart » Mon Jul 09, 2012 11:16 pm

Tortoise Trust wrote:below zero on carapace surface... + 7 on underside in undisturbed scrape!!!


Old thread, I know, but I've just been re-reading this, and thinking about the number of times I've brought the leopards in quite late, after the sun has gone down and when their carapaces have felt quite cool, but their undersides much warmer. (No measurments here - this is the temperature equivalent of the "well-filled pie" judgement of weight!)
Presumably they trap the residual heat that's in the ground, which around them will have dissipated into the cooling evening atmosphere.

Must take some measurements, if the weather ever improves enough to put them out again... :)
Stuart
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Re: Low temperature behaviour.

Postby Tortoise Trust » Tue Jul 10, 2012 6:09 am

Yes... for one thing, their body protects the ground from wind-chill. One of the REALLY fascinating things about this is what I'd call the "flow of thermal dynamics" you find going on... it is very subtle, and very complex. Heat loss... heat gain... heat conservation... cooling.... convection... radiant....

It is truly amazing - and really brings it home just how difficult an animal they really are. The way they use their environment to self-adjust temperatures is incredible. We still have much to learn.
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Re: Low temperature behaviour.

Postby Tortoise Trust » Tue Feb 26, 2013 10:41 am

Here we are on Feb 26 2013...

Had a light frost overnight, down to -0.2C.

Found this one exactly like this...at 9.30 am

Image

Very exposed, as you can see, but carapace already warming up:

Image

And another, somewhat more hidden, in a scrape under a shrub:

Image

Look at this plastron temperature....

Image
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Re: Low temperature behaviour.

Postby Daryn » Tue Feb 26, 2013 12:26 pm

Amazing they seem alot tougher than we think they are, they amaze me every day, I keep watching mine and trying to figure her out. I put mine out every day now if the weather is 5plus degrees as Im sure she knows what she wants to do more than me, she stays in the house over night gets nice and warm through the morning under the lamp then out in the garden to feed about 11am, when she has finished she goes in her enclosure or sometimes her den/hide and I bring her in about 2pm and she goes under the lamp before it switched off at 4pm and she winds down if he wants to go straight in her hide then I only give her an hour then bring her in, if she goes for a wander around the garden then I leave her out.

Temperature outside today is about 5.4 degrees she has ate everything I put out and now in her covered outdoor enclosure but actively walking around.
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Re: Low temperature behaviour.

Postby Anita Sayles » Tue Feb 26, 2013 2:00 pm

12deg today in my cold frame a few minutes ago and sunny, bitter wind though.
Marley is in the cold frame having a wander around, I don't know if he'll venture out into the outside bit of the enclosure though :)
Anita

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Be young, be foolish, but be happy... Life is too short to worry about unimportant things. Reach for the sky, touch your star, and then you find your dream. The Tams - 1965
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Re: Low temperature behaviour.

Postby Anita Sayles » Tue Feb 26, 2013 2:15 pm

Up to 16deg now :)
Image

Image

Excuse the glass being dirty, I haven't cleaned it this year yet...
Anita

Complete newbie, your patience is appreciated!
Be young, be foolish, but be happy... Life is too short to worry about unimportant things. Reach for the sky, touch your star, and then you find your dream. The Tams - 1965
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Re: Low temperature behaviour.

Postby Jessamy » Thu Feb 28, 2013 1:45 am

Very interesting, I have a not quite yearling Redfoot and I noticed his activity level did not correlate with, nor did he seek out, warmth and moisture as consistently as my reading led me to believe. My only concern was does he physically understand what's good for him or do the artificial conditions throw off their natural behavior? Any thoughts, will an otherwise healthy tortoise engage in unhealthy behavior?

Your information is actually not too surprising once you think about it, for instance I live in generally warm, wet FL but seasonally it gets relatively cool and dry with occasional light freezes; the native turtles/tortoises adjust just fine and remain active.
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Re: Low temperature behaviour.

Postby Tortoise Trust » Thu Feb 28, 2013 12:05 pm

Today... snow!

Image
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