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Anaerobic metabolic strategy of the glacial relict isopod Saduria (Mesidotea) entomon
Hagerman, L.; Szaniawska, A. (1990). Anaerobic metabolic strategy of the glacial relict isopod Saduria (Mesidotea) entomon. Mar. Ecol. Prog. Ser. 59(1-2): 91-96
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630, more
Peer reviewed article  

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Keywords
    Anaerobiosis; Animal metabolism; Glycogen; Saduria entomon (Linnaeus, 1758) [WoRMS]; Marine

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  • Hagerman, L., more
  • Szaniawska, A., more

Abstract
    The glacial relict isopod Saduria (Mesidotea) entomon was kept under anoxia for up to 300 h (S, 7 ppt; T, 8 °C). Glycogen was found in normoxic concentration of 20 to 30 µmol/g dry wt; it decreased rapidly in anoxia for the first 100 h, after which the decrease slowed. The glycolytic flux decreased after 100 h by a factor of 10. Blood glucose increased during the period of high glycolytic flux, but, corresponding to the decrease in glycolytic flux after 100 h, it decreased again, remaining however above normoxic values. S. entomon forced to be active under anoxia accumulated lactate, but when quiescent showed practically no increase in lactate. Quiescent S. entomon showed a steady accumulation of alanine. This anaerobic strategy, which makes it possible to survive extended periods of anoxia, is unique among crustaceans.

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