File:Lizard Thermoregulation.svg

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English: Lizards can be classified as ectotherms, as they do not have the means of regulating their own body temperature internally (Bakker 1). For lizards and other reptiles thermoregulate, or maintain their body temperature, through external means. They use certain behavioral traits to keep their body temperature fairly constant (Meek 1).

Lizards have been marked as one of the most discussed ectotherms as there is much curiosity in how they are able to survive in deserts with temperatures from night to day ranging from 4 degrees celsius to 30 degrees celsius, all the while maintaining a 10 degree body temperature (Bakker 1). They manage to do this through their behavioral changes, such as burrowing at night and then seeking sun when needed and going into the shade when they become too warm (Huey 1). As depicted in the graph The when the temperature is cooler at night, the lizard will stay in its burrow or when it is too hot they lizard will stay in its burrow. Bakker, R.T. A Question of Cold-Bloodedness. Academic Science, 2012, http://reptilis.net/cold-blood.html Huey, RB, Slatkin M. Cost and Benefits of Lizard Thermoregulation. NCBI, 1976, https://www.ncbi.nlm.nih.gov/pubmed/981504

Meek, Roger. Reptiles, Thermoregulation And the Environment. British Chelonia Group, 1995, http://www.britishcheloniagroup.org.uk/testudo/v4/v4n2thermoreg
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