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Related Concept Videos

Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Le Chatelier's Principle: Changing Temperature02:19

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Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
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Thermosensation01:43

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Heat and temperature are essential concepts for everyone every day. The study of heat and temperature is part of an area of physics known as thermodynamics. It is not always easy to distinguish heat and temperature.
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Requirements for Human Life01:26

Requirements for Human Life

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The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
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Mechanism of heat transfer01:19

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Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
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Related Experiment Video

Updated: Jul 4, 2025

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
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Coevolution between heat and cold tolerance in endotherms.

Hongtao Xiao1, Jiale Li1, Guozhi Yu2

  • 1Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China.

Journal of Evolutionary Biology
|February 2, 2024
PubMed
Summary
This summary is machine-generated.

Endotherms show a linked evolution of heat and cold tolerance, suggesting physiological trade-offs influence their thermal limits. This coevolutionary pattern is phylogenetically constrained in tropical species.

Keywords:
climate changecoevolutioncoldendothermsheatthermal neutral zonetrade-off

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Area of Science:

  • Zoology
  • Physiology
  • Evolutionary Biology

Background:

  • The independent or correlated evolution of heat and cold tolerance in endotherms is not fully understood.
  • Physiological trade-offs and natural selection are potential drivers of coevolutionary patterns in thermal tolerance.

Purpose of the Study:

  • To investigate the correlation between upper and lower thermal limits in endothermic species.
  • To determine if heat and cold tolerance evolve independently or correlatively across endotherms.

Main Methods:

  • Utilized a comprehensive published database of endothermic species.
  • Employed multi-response generalized linear mixed models.
  • Incorporated phylogenetic information to account for evolutionary relationships.

Main Results:

  • A significant positive correlation was found between upper and lower thermal limits in endotherms.
  • This suggests a coevolutionary pattern where heat and cold tolerance evolve together.
  • The relationship is phylogenetically constrained in tropical endotherms but not in temperate endotherms.

Conclusions:

  • Heat and cold tolerance in endotherms exhibit a correlated evolutionary pattern.
  • Phylogenetic constraints play a role in this relationship, particularly in tropical species.
  • Further research is needed to understand the ecological and evolutionary implications of this correlated evolution.