Document Detail

Oxygen regulation capacity in Discoglossus pictus tadpoles between moderate hyperoxia and acute hypoxia in water.
MedLine Citation:
PMID:  3231886     Owner:  NLM     Status:  MEDLINE    
The oxygen dependence of aquatic oxygen consumption was measured in active and anesthetized stage XVIII Discoglossus pictus tadpoles (Amphibia, Anura). The active tadpoles are good oxygen regulators in moderate hyperoxia and moderate hypoxia, whereas they are oxygen conformers in acute hypoxia. Critical oxygen pressure was 52 mmHg O2. Anesthetizing the larvae changes them to perfect oxygen conformers between moderate hyperoxia and moderate hypoxia (249-63 mmHg O2). At stage XVIII the aquatic respiratory organs are still capable of producing oxygen regulation when free access to air is denied. The marked capacity for oxygen regulation in D. pictus tadpoles is concordant with the strong hypoxic environments in which these animals usually live in nature.
G Barja de Quiroga; M Alonso-Bedate
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Revista española de fisiología     Volume:  44     ISSN:  0034-9402     ISO Abbreviation:  Rev. Esp. Fisiol.     Publication Date:  1988 Sep 
Date Detail:
Created Date:  1989-04-18     Completed Date:  1989-04-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0404475     Medline TA:  Rev Esp Fisiol     Country:  SPAIN    
Other Details:
Languages:  eng     Pagination:  323-9     Citation Subset:  IM; S    
Departamento de Fisiología Animal, Facultad de Biología, Universidad Complutense, Madrid, Spain.
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MeSH Terms
Anoxia / metabolism
Anura / physiology*
Larva / physiology
Oxygen Consumption*
Reg. No./Substance:

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