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Journal Article

Some Factors Affecting Metabolic Rate in an Antarctic Mite

S. R. Young and William Block
Oikos
Vol. 34, No. 2 (1980), pp. 178-185
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3544180
Stable URL: http://www.jstor.org/stable/3544180
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Some Factors Affecting Metabolic Rate in an Antarctic Mite
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Abstract

1. Determinations of live weight-specific oxygen consumption (metabolic rate) in adults of the Antarctic terrestrial mite Alaskozetes antarcticus (Michael) showed that starvation resulted in metabolic suppression. 2. Food materials were shown to influence metabolic rates and depletion of oxygen concentration in Cartesian Divers resulted in decreased oxygen uptake. 3. The effects of sex and reproductive condition on metabolic rates were explicable on the basis of weight differences between males, gravid females and non-gravid females. 4. Long periods of laboratory culture tended to result in lower weights and metabolic rates, but short term temporal variation in weight-specific oxygen consumption within individuals was also demonstrated. 5. Oxygen consumption rates of adult A. antarcticus were measured at -4°C and found to be slightly lower than values previously measured at 0°C. /// Определения связи живог веса и потребления кислорода (скорость метаболизма) у взрослых антарктических почвенных клещей Alaskozetes antarcticus (Michael) показали, что голодание приводит к подавлению метаболизма. Показано, что пищевой материал влияет на интенсивность метаболизма, и истощение запаса кислорода в респирометре приводит к снижению потребления кислорода. Влияние половых различий и полового созревания на скорость метаболизма рассматривается на основе различий веса у самцов, беременных и небеременных самок. Длительные пероиоды лабораторного культивирования приводят к снижению веса и интенсивности метаболизма, но кратковпеменные опьты по определению зависимости веса и потребления кислорода у отдельных особей таюке проводились. Потребление кислорода у взрослых A. antarcticus, определенные при -4°С, несколько ниже, чем результаты более ранних нзмерений при 0°С.

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