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The glycogen content in stressed marine bivalves: the initial absence of a decrease
Hummel, H.; de Wolf, L.; Zurburg, W.; Apon, L.P.; Bogaards, R.H.; Van Ruitenburg, M. (1989). The glycogen content in stressed marine bivalves: the initial absence of a decrease. Comp. Biochem. Physiol. (B Biochem. Mol. Biol.) 94B(4): 729-733. hdl.handle.net/10.1016/0305-0491(89)90157-0
In: Comparative Biochemistry and Physiology. Part B. Biochemistry and Molecular Biology. Pergamon: Oxford. ISSN 1096-4959; e-ISSN 1879-1107
Peer reviewed article  

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Trefwoorden
    Accumulation
    Air exposure
    Biological stress
    Salts > Carboxylic acid salts > Acetate
    Utilization
    Cerastoderma edule (Linnaeus, 1758) [WoRMS]; Mytilus edulis Linnaeus, 1758 [WoRMS]
    Marien

Auteurs  Top 
  • Hummel, H., meer
  • de Wolf, L.
  • Zurburg, W.
  • Apon, L.P.
  • Bogaards, R.H.
  • Van Ruitenburg, M.

Abstract
    Changes in the glycogen content, condition, stomach content and acetic acid concentration of mussels Mytilus edulis and cockles Cerastoderma edule were followed during periods of up to 14 days of exposure (to air) at temperatures of 5 and 20° C. In animals with a high glycogen content the glycogen is not used during the first 3 to 7 days, at high and low temperatures respectively. After this latent period the glycogen concentration often decreased, coinciding with a high mortality and an increase of the concentration of acetic acid. In cockles with a low glycogen content, and kept at a high temperature, glycogen can be used from the beginning of the stress period. Between species no clear differences were found. The stomach content decreased during exposure; however, the stomach content amounted to only 0.5 to 0.7% of the body weight, and is though to be of minor importance as an energy source during the stress period. Especially at the higher temperatures glycogen finally is transformed into acetic acid. It is concluded that during exposure, the animals do not die because of a lack of energy reserves, but because of a high accumulation of acids.

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