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Notes on the swim-bladder physiology of cod(Gadus morhua) investigated from the underwater laboratory “Helgoland”
Helgoländer wissenschaftliche Meeresuntersuchungen volume 29, pages 460–463 (1977)
Abstract
In situ sampling of gas from cod swim-bladders took place during a fortnight's saturation mission with the underwater laboratory “Helgoland“ in May–June 1975. These samples were compared to those done by the conventional method of transporting the fish to the surface for sampling. Based upon these in-situ measurements, the mean O2-concentration was 55.7% in buoyant cod at 15 m depth. Repeated sampling of the same fish showed a change in gas composition. Compared to the conventional method of transporting fish for sampling to the surface, in-situ sampling gave results with less variation, and indicated that surface-sampling does not give the correct gas composition of buoyant fish at depth of catch.
Literature cited
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Sundnes, G., Gulliksen, B. & Mork, J. Notes on the swim-bladder physiology of cod(Gadus morhua) investigated from the underwater laboratory “Helgoland”. Helgolander Wiss. Meeresunters 29, 460–463 (1977). https://doi.org/10.1007/BF01609983
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DOI: https://doi.org/10.1007/BF01609983