Pulmonary Shunts in Harbor Seals and Sea Lions during Simulated Dives to Depth

@article{Kooyman1982PulmonarySI,
  title={Pulmonary Shunts in Harbor Seals and Sea Lions during Simulated Dives to Depth},
  author={Gerald L Kooyman and E. E. Sinnett},
  journal={Physiological Zoology},
  year={1982},
  volume={55},
  pages={105 - 111}
}
Pulmonary shunts in seals and sea lions were determined before and during dives to simulated depths up to 100 m. Five young harbor seals weighing 36-50 kg and two young sea lions weighing 21-40 kg were dived in a compression chamber. Before and during the dives, blood samples were obtained from the aorta and usually the pulmonary artery. Arterial O₂, and CO₂ tensions, hemoglobin concentration, and venous O₂ contents were determined. From these data the physiological pulmonary shunt of the lung… 

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  • G. Kooyman
  • Environmental Science
    American journal of physiology. Regulatory, integrative and comparative physiology
  • 2015
Results showed how Weddell seals manage their oxygen stores, that they become reliant on a positive contribution of anaerobic metabolism during a dive duration of more than 20 min, and that nitrogen blood gases remain so low that lung collapse must occur at about 25 to 50 m.
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