Vampire Blood: Respiratory Physiology of the Vampire Squid (Cephalopoda: Vampyromorpha) in Relation to the Oxygen Minimum Layer
Deep sea, Haemocyanin, Hypoxia
Digital Object Identifier (DOI)
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
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Citation / Publisher Attribution
Experimental Biology Online, v. 4, p. 1-10
Scholar Commons Citation
Seibel, Brad A.; Chausson, Fabienne; Lallier, Francois H.; Zal, Franck; and Childress, James J., "Vampire Blood: Respiratory Physiology of the Vampire Squid (Cephalopoda: Vampyromorpha) in Relation to the Oxygen Minimum Layer" (1999). Marine Science Faculty Publications. 2395.