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dc.contributor.authorSpicer, JI
dc.contributor.authorMorley, SA
dc.date.accessioned2019-06-20T19:09:16Z
dc.date.available2019-06-20T19:09:16Z
dc.date.issued2019-08
dc.identifier.issn0962-8436
dc.identifier.issn1471-2970
dc.identifier.other20190034
dc.identifier.urihttp://hdl.handle.net/10026.1/14347
dc.description.abstract

<jats:p> It has been suggested that giant Antarctic marine invertebrates will be particularly vulnerable to declining O <jats:sub>2</jats:sub> levels as our ocean warms in line with current climate change predictions. Our study provides some support for this oxygen limitation hypothesis, with larger body sizes being generally more sensitive to O <jats:sub>2</jats:sub> reductions than smaller body sizes. However, it also suggests that the overall picture is a little more complex. We tested predictions from three different, but overlapping, O <jats:sub>2</jats:sub> -related hypotheses accounting for gigantism, using four Antarctic amphipod species encompassing a wide range of body sizes. We found a significant effect of body size, but also of species, in their respiratory responses to acutely declining O <jats:sub>2</jats:sub> tensions. The more active lifestyle of intermediate-sized <jats:italic>Prostebbingia brevicornis</jats:italic> was supported by a better respiratory performance than predicted by the oxygen limitation hypothesis alone, but consistent with the symmorphosis hypothesis. We suggest that giant polar amphipods are likely to be some of the first to fare badly in an O <jats:sub>2</jats:sub> -poor ocean. However, the products of past evolutionary innovation, such as respiratory pigments that enhance O <jats:sub>2</jats:sub> -transport and novel gas exchange structures, may in some species offset any respiratory disadvantages of either large or small body size. </jats:p> <jats:p>This article is part of the theme issue ‘Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen’.</jats:p>

dc.format.extent0-0
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoen
dc.publisherRoyal Society, The
dc.subjectoxygen limitation hypothesis
dc.subjectSymmorphosis
dc.subjectrespiratory advantage hypothesis
dc.subjectoxyregulation
dc.subjectgigantism
dc.subjectglobal climate change
dc.titleWill giant polar amphipods be first to fare badly in an oxygen-poor ocean? Testing hypotheses linking oxygen to body size
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/31203754
plymouth.issue1778
plymouth.volume374
plymouth.publisher-urlhttp://dx.doi.org/10.1098/rstb.2019.0034
plymouth.publication-statusPublished
plymouth.journalPhilosophical Transactions of the Royal Society B: Biological Sciences
dc.identifier.doi10.1098/rstb.2019.0034
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.publisher.placeEngland
dcterms.dateAccepted2019-03-25
dc.rights.embargodate2019-9-3
dc.identifier.eissn1471-2970
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1098/rstb.2019.0034
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-08
rioxxterms.typeJournal Article/Review


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