Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/16197
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dc.contributor.authorCampbell, Hamishen
dc.contributor.authorFraser, Keiron P Pen
dc.contributor.authorBishop, Charles Men
dc.contributor.authorPeck, Lloyd Sen
dc.contributor.authorEgginton, Stuarten
dc.date.accessioned2014-12-03T16:09:00Z-
dc.date.issued2008-
dc.identifier.citationPLoS One, 3(3), p. 1-9en
dc.identifier.issn1932-6203en
dc.identifier.urihttps://hdl.handle.net/1959.11/16197-
dc.description.abstractActive metabolic suppression in anticipation of winter conditions has been demonstrated in species of mammals, birds, reptiles and amphibians, but not fish. This is because the reduction in metabolic rate in fish is directly proportional to the decrease in water temperature and they appear to be incapable of further suppressing their metabolic rate independently of temperature. However, the Antarctic fish ('Notothenia coriiceps') is unusual because it undergoes winter metabolic suppression irrespective of water temperature. We assessed the seasonal ecological strategy by monitoring swimming activity, growth, feeding and heart rate (fH) in 'N. coriiceps' as they free-ranged within sub-zero waters. The metabolic rate of wild fish was extrapolated from fH recordings, from oxygen consumption calibrations established in the laboratory prior to fish release. Throughout the summer months 'N. coriiceps' spent a considerable proportion of its time foraging, resulting in a growth rate (Gw) of 0.186±0.2% day-¹. In contrast, during winter much of the time was spent sedentary within a refuge and fish showed a net loss in Gw (-0.05±0.05% day-¹). Whilst inactive during winter, 'N. coriiceps' displayed a very low fH, reduced sensory and motor capabilities, and standard metabolic rate was one third lower than in summer. In a similar manner to other hibernating species, dormancy was interrupted with periodic arousals. These arousals, which lasted a few hours, occurred every 4-12 days. During arousal activity, fH and metabolism increased to summer levels. This endogenous suppression and activation of metabolic processes, independent of body temperature, demonstrates that N. coriiceps were effectively 'putting themselves on ice' during winter months until food resources improved. This study demonstrates that at least some fish species can enter a dormant state similar to hibernation that is not temperature driven and presumably provides seasonal energetic benefits.en
dc.languageenen
dc.publisherPublic Library of Scienceen
dc.relation.ispartofPLoS Oneen
dc.titleHibernation in an Antarctic Fish: On Ice for Winteren
dc.typeJournal Articleen
dc.identifier.doi10.1371/journal.pone.0001743en
dcterms.accessRightsGolden
dc.subject.keywordsEcosystem Functionen
dc.subject.keywordsAnimal Behaviouren
local.contributor.firstnameHamishen
local.contributor.firstnameKeiron P Pen
local.contributor.firstnameCharles Men
local.contributor.firstnameLloyd Sen
local.contributor.firstnameStuarten
local.subject.for2008060801 Animal Behaviouren
local.subject.for2008050102 Ecosystem Functionen
local.subject.seo2008970106 Expanding Knowledge in the Biological Sciencesen
local.subject.seo2008960502 Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environmentsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailhcampbe8@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20141201-151334en
local.publisher.placeUnited States of Americaen
local.identifier.runningnumbere1743en
local.format.startpage1en
local.format.endpage9en
local.peerreviewedYesen
local.identifier.volume3en
local.identifier.issue3en
local.title.subtitleOn Ice for Winteren
local.access.fulltextYesen
local.contributor.lastnameCampbellen
local.contributor.lastnameFraseren
local.contributor.lastnameBishopen
local.contributor.lastnamePecken
local.contributor.lastnameEggintonen
dc.identifier.staffune-id:hcampbe8en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:16434en
local.identifier.handlehttps://hdl.handle.net/1959.11/16197en
dc.identifier.academiclevelAcademicen
local.title.maintitleHibernation in an Antarctic Fishen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorCampbell, Hamishen
local.search.authorFraser, Keiron P Pen
local.search.authorBishop, Charles Men
local.search.authorPeck, Lloyd Sen
local.search.authorEgginton, Stuarten
local.uneassociationUnknownen
local.year.published2008en
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