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dc.contributor.authorNilsson, G.en_US
dc.contributor.authorRoutley, M.en_US
dc.contributor.authorRenshaw, Gillianen_US
dc.date.accessioned2017-05-03T13:44:29Z
dc.date.available2017-05-03T13:44:29Z
dc.date.issued2000en_US
dc.date.modified2010-07-26T06:48:25Z
dc.identifier.issn09628452en_US
dc.identifier.doi10.1098/rspb.2000.1147en_AU
dc.identifier.urihttp://hdl.handle.net/10072/3403
dc.description.abstractElasmobranch fishes have long been noted for having unusually large brains for ectotherms, and therefore may be exceptions to the rule that vertebrates in general devote less than 8% of their resting metabolic rate to the central nervous system. The brain mass of sharks, skates and rays is often several times larger than that of teleost fishes of the same size. Still, the underlying reasons for this have remained unclear. Ion pumping by the Na+/K+-ATPase is the single most energy consuming process in the brain. In this study, Na+/K+-ATPase activity was measured in the brain of four species of elasmobranchs and 11 species of teleosts. While the average brain mass of the elasmobranchs examined was approximately three times that of the teleosts, the mean specific Na+/K+-ATPase activity was only about one-third of that of the teleosts. Thus, the total brain Na+/K+-ATPase activity was similar in elasmobranchs and teleosts. This suggests that the large brain size of elasmobranchs is at least partly related to a low mass-specific rate of brain energy use.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherRoyal Society of Londonen_US
dc.publisher.placeUKen_US
dc.relation.ispartofpagefrom1335en_US
dc.relation.ispartofpageto1339en_US
dc.relation.ispartofjournalRoyal Society of London. Proceedings. Biological Sciencesen_US
dc.relation.ispartofvolume267en_US
dc.subject.fieldofresearchcode320000en_US
dc.titleLow mass-specific brain Na+/K+ATPase activity in elasmobranch compared to teleost fishes:implications for the large brain size of elasmobranchsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2000
gro.hasfulltextNo Full Text


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