Factors Affecting O2-Uptake in the Cuttlefish,Sepia Officinalis

Abstract
INTRODUCTIONCephalopods are among the most active and agile animals in the oceans. They are all predators and many pelagic species are capable of high swimming speeds.The morphology of the gills (ctenidia) and heart and vascular systems in cephalopods are suggestive of a high efficiency in respiratory gas exchange and internal blood gas transport.The present study reports on resting (standard) values of O2-uptake in relation to body size and ambient water O2-tension in the common cuttlefish,Sepia officinalis.

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