Ectotherms and endotherms respond differently to changes in environmental temperature

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A small lizard can serve as an example of an ectotherm. We can compare it with a mouse, which is an endotherm of the same body size. We can put each animal in a closed chamber and measure its body temperature and metabolic rate as we change the temperature of the chamber from 0°C to 35°C.

The results obtained from the two species differ. The body temperature of the lizard equilibrates with that of the chamber, whereas the body temperature of the mouse remains at 37°C (Figure 41.7a). The metabolic rate of the lizard decreases as the temperature decreases (Figure 41.7b). In contrast, the mouse's metabolic rate increases as chamber temperature falls below about 27°C (notice that you must read the graph right to left to see this). Based on these observations, we might conclude that the lizard cannot regulate its body tem

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  • Gebre Girma
    How do endotherms respond to their environment?
    8 years ago
  • Filibert
    How do endotherms respond to changes in temperature?
    8 years ago
  • yorda
    How do ectotherms respond differently to environment change than endotherms?
    7 years ago
  • Ursula
    7 years ago
  • Gimja
    How do ectotherms and and endotherms differ in their response to changes in enviornmental changes?
    5 years ago
  • Pio Schiavone
    How does a mouse respond to a fall in environmental temperature?
    2 years ago
  • Samsa
    How do mice respond to changes in the environment?
    2 years ago

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