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Journal of comparative physiology

, Volume 110, Issue 2, pp 197–208 | Cite as

Oxygen consumption and body temperature in neotropical and temperate zone lungless salamanders (Amphibia: Plethodontidae)

  • Martin E. Feder
Article

Summary

  1. 1.

    Oxygen consumption of 14 neotropical and 12 temperate zone species of lungless salamanders (Amphibia: Plethodontidae) was measured in air at 5, 15, and 25°C.

     
  2. 2.

    Field body temperatures of tropical species decrease with increasing elevation; low altitude forms consistently experience temperatures above those of temperate zone plethodontids and may reach 30°C body temperature.

     
  3. 3.

    The effect of body size on metabolic rate is equivalent for both groups of salamanders at all temperatures (b=0.8), except for temperate zone forms at 5°C (b=0.6).

     
  4. 4.

    Tropical salamanders consume less oxygen than temperate zone salamanders of the same size at all temperatures. Weight-corrected metabolic rate at 15°C increases with minimum elevational range in the tropical species.

     
  5. 5.

    Oxygen consumption shows a greater temperature-related increase (Q10) from 15 to 23°C than from 5 to 15°C. This and other considerations imply that lunglessness may not restrict plethodontids to cooler microhabitats.

     

Keywords

Oxygen Body Size Oxygen Consumption Human Physiology Body Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • Martin E. Feder
    • 1
  1. 1.Department of Zoology and Museum of Vertebrate ZoologyUniversity of CaliforniaBerkeleyUSA

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