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Regulation of respiration during juvenile development of Sepia officinalis (Mollusca: Cephalopoda)
De Wachter, B.; Wolf, G.; Richard, A.; Decleir, W. (1988). Regulation of respiration during juvenile development of Sepia officinalis (Mollusca: Cephalopoda). Mar. Biol. (Berl.) 97(3): 365-371.
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Peer reviewed article  

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  • De Wachter, B., more
  • Wolf, G.
  • Richard, A.
  • Decleir, W., more

    A culture of juvenile Sepia officinalis L. was kept during summer 1985 in the aquaria of the “Station Marine”, Wimereux, France. During the first four months of juvenile development, oxygen consumption under increasing hypoxia was measured with a closed respirometer. The experiments revealed a high regulatory capacity of juvenile S. officinalis. The critical oxygen concentrations were calculated and their ontogenetical evolution was studied. The critical oxygen concentration increased with increasing development. A linear relationship emerged between the critical oxygen concentration and the logarithm of the wet weight [COc (mg O2 l-1)=-0.393+0.893×log10(Ww)]. The decreasing regulatory capacity of growing S. officinalis is most probably related to adaptations to a changing ecological environment during development. Another possibility is a physiological change, most probably related to the shift from embryonic to adult hemocyanin.

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