Experimental Biology Online

, Volume 4, Issue 1, pp 1–10

Vampire blood: respiratory physiology of the vampire squid (Cephalopoda: Vampyromorpha) in relation to the oxygen minimum layer

  • Brad A. Seibel
  • Fabienne Chausson
  • Francois H. Lallier
  • Franck Zal
  • James J. Childress
Original articles

Abstract

The functional properties of the haemocyanin ofVampyroteuthis infernalis (Cephalopoda: Vampyromorpha), measured at 5 °C, are reported and discussed in relation to hypoxia. The oxygen affinity of this haemocyanin (P50=0.47−0.55 kPa) is higher than any previously measured for a cephalopod. The high cooperativity (n50=2.20−2.23) and Bohr coefficient (−0.22) suggest a true transport function for this haemocyanin. This high-affinity haemocyanin, in conjunction with moderate gill diffusion capacity, provides a sufficient oxygen gradient from the environment to the blood to support the low routine oxygen consumption rate of V. infernalis

Key words

Deep sea Haemocyanin Hypoxia 

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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • Brad A. Seibel
    • 1
  • Fabienne Chausson
    • 2
  • Francois H. Lallier
    • 2
  • Franck Zal
    • 2
  • James J. Childress
    • 2
  1. 1.Marine Science Institute and Department of Ecology, Evolution and Marine BiologyUniversity of CaliforniaSanta BarbaraUSA
  2. 2.Equipe Ecophysiologie, Observatoire Océanologique de RoscoffUPMC – CNRS-INSURoscoff CedexFrance

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