Temperature modulation of oxygen transport in a diving mammal (Balaenoptera acutorostrata)

The functional properties of haemoglobin from the Lesser Rorqual whale (Balaenoptera acutorostrata) have been characterized as a function of the heterotropic effector concentrations and temperature. The results obtained suggest the existence of sophisticated modulation mechanisms based on the interp...

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Bibliographic Details
Main Authors: Brix, O, Bardgard, A, Giardina, B., CONDO', SAVERIO GIOVANNI, TAVAZZI, BARBARA
Other Authors: Condo', Sg, Tavazzi, B, Giardina, B
Format: Article in Journal/Newspaper
Language:English
Published: 1990
Subjects:
Animal
Thermodynamic
Diving
Hydrogen-Ion Concentration
Biological Transport
Diphosphoglyceric Acid
Temperature
Lactic Acid
Oxygen
2,3-Diphosphoglycerate
Hemoglobin
Lactate
Whale
Carbon Dioxide
Settore BIO/10 - BIOCHIMICA
Rorqual
Balaenoptera acutorostrata
Online Access:http://hdl.handle.net/2108/54793
Description
Summary:The functional properties of haemoglobin from the Lesser Rorqual whale (Balaenoptera acutorostrata) have been characterized as a function of the heterotropic effector concentrations and temperature. The results obtained suggest the existence of sophisticated modulation mechanisms based on the interplay of organic phosphates, carbon dioxide, lactate and temperature. These, together with the very small apparent heat of oxygenation (delta H) of oxygen binding, have been physiologically interpreted on the basis of the specific metabolic needs of this diving mammal.

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