OXYGEN UPTAKE AND TRANSPORT IN THE PROSOBRANCH MOLLUSCBUSYCON CANALICULATUM.I. GAS EXCHANGE AND THE RESPONSE TO HYPOXIA

Autor:	Charlotte P. Mangum, Gregory Polites
Rok vydání:	1980
Předmět:	biology Ecology medicine.medical_treatment Oxygen transport Hypoxia (environmental) Bohr effect Hemocyanin Busycon biology.organism_classification Oxygen uptake medicine Biophysics Respiratory system General Agricultural and Biological Sciences Blood ph
Zdroj:	The Biological Bulletin. 158:77-90
ISSN:	1939-8697 0006-3185
DOI:	10.2307/1540760
Popis:	1. The blood of the conch Busycon canaliculatum is highly oxygenated at the two sites of gas exchange with the ambient medium, the gill and the mantle. An exceptionally small venous reserve is maintained in prebranchial blood, suggesting an important respiratory role of the oxygen transport system.2. In normoxic water the physiological pH range is 7.85 to 8.04, where the reverse Bohr shift of Busycon hemocyanin is essentially absent. During non-lethal exposure to hypoxia, blood pH does not decrease substantially and thus the reverse Bohr shift cannot be interpreted as an adaptation to low oxygen conditions.
Databáze:	OpenAIRE
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