Abstract
The functional properties of the haemocyanin of Vampyroteuthis infernalis (Cephalopoda: Vampyromorpha), measured at 5 °C, are reported and discussed in relation to hypoxia. The oxygen affinity of this haemocyanin ( P 50=0.47−0.55 kPa) is higher than any previously measured for a cephalopod. The high cooperativity ( n 50=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
Original language | American English |
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Journal | Experimental Biology Online |
Volume | 4 |
DOIs | |
State | Published - Jan 1 1999 |
Externally published | Yes |
Keywords
- Deep sea
- Haemocyanin
- Hypoxia
Disciplines
- Life Sciences