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The relationship between blood haemocyanin level, oxygen uptake, and the heart-beat and caphognathite-beat frequencies in the lobster Homarus gammarus
Spoek, G.L. (1974). The relationship between blood haemocyanin level, oxygen uptake, and the heart-beat and caphognathite-beat frequencies in the lobster Homarus gammarus. Neth. J. Sea Res. 8(1): 1-26
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
Peer reviewed article  

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Keyword
    Marine

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  • Spoek, G.L.

Abstract
    Inactive lobsters with an adequate Hcy level in the blood have an oxygen consumption that is independent of the external oxygen concentration. In the inactive lobster the oxygen consumption, the value of the critical oxygen concentration, and the frequency of the scaphognathite beat and the heart beat increase with decreasing Hcy concentration of the blood. But at maximal activity the oxygen consumption and scaphognathite-beat frequency decrease, and only the frequency of the heart-beat increases when the Hcy level drops. There is a direct relationship between the scope for activity and the Hcy concentration of the blood. Lobsters with little or no Hcy in the blood can survive for several months, but such animals are not capable of appreciable activity and it is doubtful whether they can complete their normal life cycle.

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