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Journal of Experimental Biology 68,69-87 (1977)
Published by Company of Biologists 1977

Oxygen Consumption of the Terrestrial Mite Alaskozetes Antarcticus (Acari: Cryptostigmata)

BLOCK WILLIAM ¹

¹ Department of Zoology, School of Biological Sciences, University of Leicester, Leicester LE1 7RH, England; Life Sciences Division, British Antarctic Survey, Madingley Road, Cambridge CB3 0ET

Analysis of 148 measurements of individual respiration rate showed that although respiration was linearly related to live weight on a double log₁₀ scale, there were significant differences between rates at 0°, + 50° and +10 °C. Proto- and deutonymphal metabolic rates were higher than other stages, especially at +10 °C. Q₁₀ values ranged from 2.07 to 3.83 over 0° to +10 °C. Equations relating individual respiratory rate to live weight and temperature for A. antarcticus, and metabolic rate to temperature for 10 species of Antarctic terrestrial invertebrates were developed. Comparison with temperate data indicated considerable cold adaptation in the Antarctic species with 3–5 times increased metabolism. It was calculated that 78–82 % of the energy assimilated may be used in respiration by A. antarcticus.

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