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Article: Changes in biochemical composition in the red grouper, Epinephelus akaara (Temminck and Schlegel), and the black sea bream, Mylio macrocephalus (Basilewsky), during hypoxic exposure

TitleChanges in biochemical composition in the red grouper, Epinephelus akaara (Temminck and Schlegel), and the black sea bream, Mylio macrocephalus (Basilewsky), during hypoxic exposure
Authors
Issue Date1984
Citation
Comparative Biochemistry And Physiology -- Part A: Physiology, 1984, v. 77 n. 3, p. 475-482 How to Cite?
Abstract1. 1. Red groupers and black sea breams exposed to 4 and 2.5 mg O2, 1- for 1-7 hr showed no increase in serum and tissue lactate concentration and only slight changes in other tissue metabolites and electrolytes. 2. 2. In both species subjected to 1 mg O2 1-, there was marked hyperglycaemia, hyperlactaemia, hepatic glycogenolysis and elevation of hepatic lactate content, but the lactate and glycogen contents of the muscles were unaffected. 3. 3. Both species can obtain enough oxygen to prevent anaerobiosis at 4 to 2.5 mg O2 1- and fermentation of hepatic glycogen to lactate is the principal pathway of energy production in 1 mg O21-1. 4. 4. In bothspecies,serum Na+,K+ and Ca2+ concentrations were unchanged after exposure to 4 to 2.5 mg O2 1-1 but all three parameters were elevated after exposure to 1 mg O1 1-1, suggesting that osmoregulatory failure could occur in extremely hypoxic conditions. 5. 5. The black sea bream, but not the red grouper, accumulated lipids in the liver in addition to lactate when exposed to all levels of hypoxia. © 1984.
Persistent Identifierhttp://hdl.handle.net/10722/178370
ISSN
2000 SCImago Journal Rankings: 0.403

 

DC FieldValueLanguage
dc.contributor.authorWoo, NYSen_US
dc.contributor.authorWu, RSSen_US
dc.date.accessioned2012-12-19T09:47:18Z-
dc.date.available2012-12-19T09:47:18Z-
dc.date.issued1984en_US
dc.identifier.citationComparative Biochemistry And Physiology -- Part A: Physiology, 1984, v. 77 n. 3, p. 475-482en_US
dc.identifier.issn0300-9629en_US
dc.identifier.urihttp://hdl.handle.net/10722/178370-
dc.description.abstract1. 1. Red groupers and black sea breams exposed to 4 and 2.5 mg O2, 1- for 1-7 hr showed no increase in serum and tissue lactate concentration and only slight changes in other tissue metabolites and electrolytes. 2. 2. In both species subjected to 1 mg O2 1-, there was marked hyperglycaemia, hyperlactaemia, hepatic glycogenolysis and elevation of hepatic lactate content, but the lactate and glycogen contents of the muscles were unaffected. 3. 3. Both species can obtain enough oxygen to prevent anaerobiosis at 4 to 2.5 mg O2 1- and fermentation of hepatic glycogen to lactate is the principal pathway of energy production in 1 mg O21-1. 4. 4. In bothspecies,serum Na+,K+ and Ca2+ concentrations were unchanged after exposure to 4 to 2.5 mg O2 1-1 but all three parameters were elevated after exposure to 1 mg O1 1-1, suggesting that osmoregulatory failure could occur in extremely hypoxic conditions. 5. 5. The black sea bream, but not the red grouper, accumulated lipids in the liver in addition to lactate when exposed to all levels of hypoxia. © 1984.en_US
dc.languageengen_US
dc.relation.ispartofComparative Biochemistry and Physiology -- Part A: Physiologyen_US
dc.titleChanges in biochemical composition in the red grouper, Epinephelus akaara (Temminck and Schlegel), and the black sea bream, Mylio macrocephalus (Basilewsky), during hypoxic exposureen_US
dc.typeArticleen_US
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_US
dc.identifier.authorityWu, RSS=rp01398en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0000966098en_US
dc.identifier.volume77en_US
dc.identifier.issue3en_US
dc.identifier.spage475en_US
dc.identifier.epage482en_US
dc.identifier.scopusauthoridWoo, NYS=7005683595en_US
dc.identifier.scopusauthoridWu, RSS=7402945079en_US

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