Does Ambient Temperature Affect Cold-Blooded Animals' Size?

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Discussion Overview

The discussion centers on whether ambient temperature affects the size of cold-blooded animals, specifically exploring the potential for linear and volumetric expansion or contraction in response to temperature changes. Participants consider the applicability of the equation ΔV=βV0ΔT for these animals.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants propose that cold-blooded animals might expand or shrink in size with temperature changes, potentially following the equation ΔV=βV0ΔT.
  • Others note that while cold-blooded animals can hibernate and become sluggish in cold environments, there is limited information on whether their size changes with temperature.
  • A participant mentions that the temperature coefficient and range may be too small for current biometric precision to detect size changes accurately, suggesting that other factors, such as hydration, also influence size during a life cycle.
  • One participant points out that human height can vary due to daily changes in inter-vertebral disc compression and expansion, drawing a parallel to the question of size changes in cold-blooded animals.

Areas of Agreement / Disagreement

Participants express varying degrees of uncertainty regarding the relationship between ambient temperature and size in cold-blooded animals. No consensus is reached on whether the proposed formula applies or if size changes are significant.

Contextual Notes

Limitations include the potential for small temperature coefficients and the influence of additional factors like hydration on size, which complicate the relationship between temperature and size changes.

Timmykuku
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Since cold-blooded animals, such as lizards, turtles, &c., take on the temperature of their environment, can we expect them to linearly and volumetrically expand/shrink in warmer/cooler environments?
In addition, can we expect them to follow the simple equation: ΔV=βV0ΔT, for some volume coefficient β?
 
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Timmykuku said:
Since cold-blooded animals, such as lizards, turtles, &c., take on the temperature of their environment, can we expect them to linearly and volumetrically expand/shrink in warmer/cooler environments?
In addition, can we expect them to follow the simple equation: ΔV=βV0ΔT, for some volume coefficient β?
Welcome to the PF.

Interesting question :smile: What has your reading so far suggested? Is this for your schoolwork?
 
Thanks!

So far I've found that cold-blooded animals can hibernate And become sluggish in cold environments, but not any information regarding a change in size. I was wondering if someone knew if they could possibly following something as straight-forward as the above formula.
This question arose as I thought of how i would remain the same height in summer and winter as my body would regulate its temperature. This isn't for any class, however.
 
Timmykuku said:
I was wondering if someone knew if they could possibly following something as straight-forward as the above formula.
Yes, however, the temperature coefficient and temperature range are smaller than any biometric precision/accuracy can be expected to exhibit. This is particularly relevant when one considers all the other factors affecting "size" during a normal life cycle, degree of hydration comes immediately to mind.
 
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WRT your height, it can measurably vary from day to night.
Your inter-vertebral discs (cartilage) are compressed by the weight they support and then expand when sleeping when they no longer are supporting the weight.
 

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