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dc.contributor.authorBaker, Daniel W.
dc.contributor.authorSardella, Brian
dc.contributor.authorRummer, Jodie L.
dc.contributor.authorSackville, Michael
dc.contributor.authorBrauner, Colin J.
dc.date.accessioned2017-05-19T18:12:59Z
dc.date.available2017-05-19T18:12:59Z
dc.date.issued2015-06-09
dc.identifier.citationBaker, D.W., Sardella, B., Rummer, J.L., Sackville, M., & Brauner, C.J. (2015). Hagfish: Champions of CO2 tolerance question the origins of vertebrate gill function. Scientific Reports, 5, 1-8. DOI: 10.1038/srep11182en
dc.identifier.issn2045-2322
dc.identifier.otherDOI: 10.1038/srep11182en
dc.identifier.urihttp://hdl.handle.net/10613/4965
dc.description.abstractThe gill is widely accepted to have played a key role in the adaptive radiation of early vertebrates by supplanting the skin as the dominant site of gas exchange. However, in the most basal extant craniates, the hagfishes, gills play only a minor role in gas exchange. In contrast, we found hagfish gills to be associated with a tremendous capacity for acid-base regulation. Indeed, Pacific hagfish exposed acutely to severe sustained hypercarbia tolerated among the most severe blood acidoses ever reported (1.2 pH unit reduction) and subsequently exhibited the greatest degree of acid-base compensation ever observed in an aquatic chordate. This was accomplished through an unprecedented increase in plasma [HCO3−] (>75 mM) in exchange for [Cl−]. We thus propose that the first physiological function of the ancestral gill was acid-base regulation, and that the gill was later co-opted for its central role in gas exchange in more derived aquatic vertebrates.en
dc.description.sponsorshipThis project was funded by a Natural Sciences and Engineering Research Council Discovery grant to CJB.en
dc.format.extent8 p.en
dc.format.mediumtexten
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherMacmillan Publishers Ltd.en
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).en
dc.subject.lcshPacific hagfishen
dc.subject.lcshGillsen
dc.subject.lcshFishes--Respirationen
dc.subject.lcshFishes--Physiologyen
dc.subject.otherEptatreteus stoutiien
dc.titleHagfish: Champions of CO2 tolerance question the origins of vertebrate gill functionen
dc.typeArticleen
dc.description.noteThis is an electronic version of an article that was published as: Baker, D.W., Sardella, B., Rummer, J.L., Sackville, M., & Brauner, C.J. (2015). Hagfish: Champions of CO2 tolerance question the origins of vertebrate gill function. Scientific Reports, 5, 1-8. DOI: 10.1038/srep11182 Scientific Reports is an open access journal published by Macmillan Publishers, part of Springer Nature. More information about the journal can be found at: https://www.nature.com/srep/. This article can be accessed at: http://dx.doi.org/10.1038/srep11182.en
dc.description.noteArticle 11182en
dc.description.fulltexthttps://viuspace.viu.ca/bitstream/handle/10613/4965/Baker.SR.pdf?sequence=4en
dc.identifier.doiDOI: 10.1038/srep11182en


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