Moderate reductions in dissolved oxygen may compromise performance in an ecologically-important estuarine invertebrate
dc.contributor.author | Collins, M | |
dc.contributor.author | Tills, O | |
dc.contributor.author | Turner, LM | |
dc.contributor.author | Clark, MS | |
dc.contributor.author | Spicer, JI | |
dc.contributor.author | Truebano, M | |
dc.date.accessioned | 2019-09-02T06:42:13Z | |
dc.date.issued | 2019-11-25 | |
dc.identifier.issn | 0048-9697 | |
dc.identifier.issn | 1879-1026 | |
dc.identifier.other | 133444 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/14837 | |
dc.description.abstract |
Coastal ecosystems, including estuaries, are increasingly pressured by expanding hypoxic regions as a result of human activities such as increased release of nutrients and global warming. Hypoxia is often defined as oxygen concentrations below 2 mL O2 L-1. However, taxa vary markedly in their sensitivity to hypoxia and can be affected by a broad spectrum of low oxygen levels. To better understand how reduced oxygen availability impacts physiological and molecular processes in invertebrates, we investigated responses of an estuarine amphipod to an ecologically-relevant level of moderate hypoxia (~2.6 mL O2 L-1) or severe hypoxia (~1.3 mL O2 L-1). Moderate hypoxia elicited a reduction in aerobic scope, and widespread changes to gene expression, including upregulation of metabolic genes and stress proteins. Under severe hypoxia, a marked hyperventilatory response associated with maintenance of aerobic performance was accompanied by a muted transcriptional response. This included a return of metabolic genes to baseline levels of expression and downregulation of transcripts involved in protein synthesis, most of which indicate recourse to hypometabolism and/or physiological impairment. We conclude that adverse ecological effects may occur under moderate hypoxia through compromised individual performance and, therefore, even modest declines in future oxygen levels may pose a significant challenge to coastal ecosystems. | |
dc.format.extent | 133444-133444 | |
dc.format.medium | Print-Electronic | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.subject | Hypoxia | |
dc.subject | Estuary | |
dc.subject | Integrative | |
dc.subject | Ecophysiology | |
dc.subject | Crustacea | |
dc.title | Moderate reductions in dissolved oxygen may compromise performance in an ecologically-important estuarine invertebrate | |
dc.type | journal-article | |
dc.type | Article | |
plymouth.author-url | https://www.ncbi.nlm.nih.gov/pubmed/31362229 | |
plymouth.volume | 693 | |
plymouth.publisher-url | http://dx.doi.org/10.1016/j.scitotenv.2019.07.250 | |
plymouth.publication-status | Published | |
plymouth.journal | Science of the Total Environment | |
dc.identifier.doi | 10.1016/j.scitotenv.2019.07.250 | |
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 | |
plymouth.organisational-group | /Plymouth/Users by role/Researchers in ResearchFish submission | |
dc.publisher.place | Netherlands | |
dcterms.dateAccepted | 2019-07-16 | |
dc.rights.embargodate | 2020-7-16 | |
dc.identifier.eissn | 1879-1026 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.version | Accepted Manuscript | |
rioxxterms.versionofrecord | 10.1016/j.scitotenv.2019.07.250 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2019-11-25 | |
rioxxterms.type | Journal Article/Review |