samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
Roachman26 said:Where did this number come from? I keep seeing this posted as the minimum temp for tortoises to be able to digest their food. I've always thought it was a bit higher than that
* OK Roachman here we go .....
For one thing, the terms endothermic and ectothermic are just one of three measurments used to determine thermophysiology.
There are two more variables that must be thrown into the mix. That of resting metabolism and of resting temperature.
The two terms used for separating resting metabolism are: bradymetabolic and tachymetabolic. A bradymetabolic animal has a low resting metabolism, such as a gila monster while a tachymetabolic animal has a high resting metabolism, such as a Black Mamba.
Gigantothermy is another temperature conserving technique that is used by the larger reptiles such as tortoises. The basic formula for this is that the larger you are the easier it is to keep your body at a constant temperature range.
there are gigantothermic reptiles today that spend long periods of time in cold areas. These animals handle it by simply moving their body. When you move, your body uses energy and creates heat. So by simply moving a gigantothermic animal can keep its body temperature a constant. Besides that fact, it has also been shown that reptiles can gain heat faster than they lose , So the general rule is that the larger you get, the easier it is to keep a stable body temperature.
Rate of digestion, as it relates to both the time of passage through the gut and to the efficiency of digestion, is a factor of body temperature, quantity and quality of food. Efficiency relates to the breakdown and extraction of nutrients necessary not only to maintain basic body functions but also to enable growth and reproduction.
Higher temperatures + larger quantities of food high in fiber = faster passage but with less efficiency (typical of feeding during lush seasons)
Higher temperatures + smaller quantities of high fiber = slower passage but greater efficiency (typical of feeding during dry seasons)
High temperatures + large or small quantities of low fiber = rapid inefficient passage
Low temperatures + smaller quantities of high fiber = slower passage by seeking cooler places, thus reducing the drain on energy reserves)
Low temperatures + small quantities of low fiber = slower inefficient passage
Just some input .....
JD~
brianfurtado said:samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
My Greek does this as well. On the hot end the temps at ground level are 100-105 and the cool end (where her food is) is 77-80. She'll wake up in the AM when the lights come on and poke her head out of her burrow for a 1/2 hour or so and then go wait by the food dish. After I feed her, she goes back into her hide. I'll find her walking about in the middle of the day, on the warm end, but I never see her bask.
Redfoot NERD said:Anyone ever consider the temp needs of different species... anyone???
Northern Redfoots seek dark hide at high 80's - personal experience from all ages.
Brazilians seem to like it even as low as the mid 70's - ( first out of their hide in the morning ) - personal experience from all ages.
Indian Stars seem to be O.K. into the low 90's maximum.. then seek dark hide - 4yr-olds ~ 10yr old adults - personal experience!
These are temps outside during late spring thru early fall.. mostly during sunny days.
So let's consider the needs of ALL of the different species and world locations...................... they can and will vary considerably!
NERD
The best "Weather" site I've found.. and you can check any region of the world temps & humidity - http://www.wunderground.com/global/Region/SA/2xST.html[hr]
brianfurtado said:samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
My Greek does this as well. On the hot end the temps at ground level are 100-105 and the cool end (where her food is) is 77-80. She'll wake up in the AM when the lights come on and poke her head out of her burrow for a 1/2 hour or so and then go wait by the food dish. After I feed her, she goes back into her hide. I'll find her walking about in the middle of the day, on the warm end, but I never see her bask.
Either/any of you ever consider it's because it's TOO hot under that light? Is that temp on the substrate or the top of their carapace ( where it's warmer )???
-EJ said:what is the standard temperature of a human bean? It's accepted that it is 98.6F. I suspect that different genus have different temperatures but I also suspect that all tortoises have a similar optimal temperature.
samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
How many sulcatas do you keep,Meg?Meg90 said:I think 85 is a bit cool myself. I would bet that its closer to 90-95 to be able to digest. I also do not agree with the general saying that torts need to be soaked because we are "cooking" them with such hot lights. Roachman has the right idea--his sullies are out in the heat and loving it. Its natural for them.
The human body is 98.6F in its restful state, and the average basking spot for a tortoise is right around that. I like to keep my kids a bit hotter by having ambient room temp not fall below 70F in the winter. In the summer directly under basking lights, it can get up to 110F+.
All have big water dishes and a cool side equipped with some moist soft eco earth if they need to cool off. I do not worry about anybody overheating, not even my youngest.
Reptiles rely on instinct, even the babies and if something is too hot, they move. I've seen so many keepers on here, worried about why their tortoises never seem to use their cool sides--I wonder if its because they are not at all as "hot" as we think they are under their basking spots.
IMO the only reason to be worried about your temps, is when the tortoise starts to avoid their basking spot and warm side. That tells the keeper that the wattage of the bulb is too high because the temp is no longer comfortable for the animal.
Just my thoughts.
chadk said:samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
120 watt Megaray? I think you mean 100 watt.
samstar said:chadk said:samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
120 watt Megaray? I think you mean 100 watt.
The newer one's are either 120 or 160 watts.
Redfoot NERD said:Ed the simple truth is.. it doesn't matter who says what - you take issue to it and I doubt 'most' folks even know what you mean when you do post it.
You're bringing a warm-blooded homo sapien into this equation.. and we're talking about cold-blooded reptiles! You know those creatures that some live close to the equator and some closer to the North Pole.. that they actually "hibernate"! [ for the lack of truer terms ]
See the difference?
Terry K
chadk said:samstar said:chadk said:samstar said:The basking spot for my Star under the megaray 120 watts mvb is about 100-105f and 85-90f on the cold side. He walks over to the basking spot every morning and waits for me to feed him than goes back to his hut after eating.
120 watt Megaray? I think you mean 100 watt.
The newer one's are either 120 or 160 watts.
Are they so new that they don't have them listed at their website yet???
Are you sure you don't meant "120 volts"??