Many sites by Petr Necas…

K

kinyonga

Chameleon Queen
Click on the pictures…
https://www.petrnecas.com/

“Life of my choice”…
https://www.petrnecas.com/about-me/

“RESPONSIBLE HERPETOCULTURE EXPERT (CZECH REPUBLIC)”…
https://responsibleherpetoculture.foundation/about-us/petr-necas/

“Chameleons”…
https://www.chameleons.info/en/

“Petr Necas – Understanding Chameleons”…
https://www.chameleons.info/l/petr-necas-understanding-chameleons/

“Books by Petr Necas”
https://www.thriftbooks.com/a/petr-...xCDXGK9YKndunNoiBNLSLP6ysW7nBbFj6cXf9J-VgWYjH

“Barely Seen, Deeply Fascinating: The Lowland Enigma Trioceros camerunensis”…
https://www.researchgate.net/public...ing_The_Lowland_Enigma_Trioceros_camerunensis
More…
https://www.researchgate.net/profile/Petr-Necas-3

“FOG DRINKING IN CHAMELEONS Petr Necas”…
 
kinyonga said:
More…
“Aging With Every Heartbeat aka Why Do Chameleons Get Old in Captivity While They Are Still Young”…
https://www.chameleons.info/l/aging-with-every-heartbeat/
Click to expand...
This does have me thinking. Admittedly, my temps are on the lower end of the spectrum usually, especially as we move into winter. We do observe how lower temperatures and less frequent feedings benefit female veiled chameleons with egg production.
Has anyone toyed with lower temperatures in captivity? It'd also certainly make fogging at night less of a potential hazard.

I want to see/learn more about the 16 year old individual. That sounds amazing to me. I would love to see that in captivity.
 
LizardLurkin said:
This does have me thinking. Admittedly, my temps are on the lower end of the spectrum usually, especially as we move into winter. We do observe how lower temperatures and less frequent feedings benefit female veiled chameleons with egg production.
Has anyone toyed with lower temperatures in captivity? It'd also certainly make fogging at night less of a potential hazard.

I want to see/learn more about the 16 year old individual. That sounds amazing to me. I would love to see that in captivity.
Click to expand...
I did some relatively small variations in temperature through the year for chameleons but I reversed the seasons to how they would occur in the northern hemisphere since in the summer I get too much natural light to fool the Cham into thinking it’s the cool season

I do make pretty large temperature changes for my leopard gecko over the course of the year and he’s done well with. Again basing these changes on climatic data in their home range. He’s certainly less active and eats less in the winter period. It ends up being about a 20 degree swing done gradually throughout the year up and down
 
They tried to apply this logic in tegu land. The experiment was those that hibernate/brumate there animals for 6-8 months a year, vs those (i assume more tropical areas) that never put their animals down. At the end of the study no correlation was found. So it wasnt like you get a fixed amount of tegu time, and you get 10 years out of your 365 tegu and 20 years out of your 180day tegu.

Someone else did a thought experiment with humans. We get about a billion heart beats, so if you walk 12 hours a day, you should drop dead around 45 years old.
 
Last edited:
nightanole said:
They tried to apply this logic in tegu land. The experiment was those that hibernate/brumate there animals for 6-8 months a year, vs those (i assume more tropical areas) that never put their animals down. At the end of the study no correlation was found. So it wasnt like you get a fixed amount of tegu time, and you get 10 years out of your 365 tegu and 20 years out of your 180day tegu.

Someone else did a thought experiment with humans. We get about a billion heart beats, so if you walk 12 hours a day, you should drop dead around 45 years old.
Click to expand...
Is there anywhere I can read more about this? I remember pictures of your tegu ❤️
Amazing creatures!
I have lots of questions, but I’d like to look through the data they found
 
DocZ said:
Is there anywhere I can read more about this? I remember pictures of your tegu ❤️
Amazing creatures!
I have lots of questions, but I’d like to look through the data they found
Click to expand...

Im not having much luck finding it. It was an article published around 2017 that i read in 2019 after the tegus 2nd brumation. It had to do with forced brumation of captive tegus and how it was not triggered by temperature changes. On a side note, Lola went down the beginning of august. And the only conclusion i can come to is it was the humidity (we are in a pretty good drought). As august and september were pretty hot, and even this time in october the heater only kicks once or twice at night, yet we easily hit 70-80 during the day.

https://link.springer.com/chapter/10.1007/978-3-642-28678-0_28

https://pmc.ncbi.nlm.nih.gov/articles/PMC7946314/

https://pubs.usgs.gov/publication/70148411
 
nightanole said:
Im not having much luck finding it. It was an article published around 2017 that i read in 2019 after the tegus 2nd brumation. It had to do with forced brumation of captive tegus and how it was not triggered by temperature changes. On a side note, Lola went down the beginning of august. And the only conclusion i can come to is it was the humidity (we are in a pretty good drought). As august and september were pretty hot, and even this time in october the heater only kicks once or twice at night, yet we easily hit 70-80 during the day.

https://link.springer.com/chapter/10.1007/978-3-642-28678-0_28

https://pmc.ncbi.nlm.nih.gov/articles/PMC7946314/

https://pubs.usgs.gov/publication/70148411
Click to expand...
I’m sorry to hear about Lola. Thank you for sharing this with us
 
LizardLurkin said:
This does have me thinking. Admittedly, my temps are on the lower end of the spectrum usually, especially as we move into winter. We do observe how lower temperatures and less frequent feedings benefit female veiled chameleons with egg production.
Has anyone toyed with lower temperatures in captivity? It'd also certainly make fogging at night less of a potential hazard.

I want to see/learn more about the 16 year old individual. That sounds amazing to me. I would love to see that in captivity.
Click to expand...
I varied photoperiods along with that. I did not change how I regulated the humidity although both the geckos and Chams I’ve had see a wide variation in daily/seasonal humidity as well
I think this is really important to consider too
 
nightanole said:
Someone else did a thought experiment with humans. We get about a billion heart beats, so if you walk 12 hours a day, you should drop dead around 45 years old.
Click to expand...
I wonder if “exercise induced” tachycardia is less of a problem with longevity than environmentally (temp in particular) caused tachycardia. (Not to mention the health benefits of exercise)
I sort of watch vital signs for a living and I am certain I can cause tachycardia by overheating patients. It’s not uncommon with kids because some of our warming techniques in the operating room are very effective at warming little ones and if not monitored carefully can lead to changes in vital signs like tachycardia with hyperthermia
 
IMG_6252.jpeg
 
@DocZ said…”I reversed the seasons to how they would occur in the northern hemisphere since in the summer I get too much natural light to fool the Cham into thinking it’s the cool season”…I did the reversed seasons too. I’m not sure if it would affect their circadianclock or not, but it didn’t seem to in any way I could see. People moving from one area of the world to another seem to cope with it…I think.
 
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