Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorPond, David Wen_UK
dc.contributor.authorTarling, Geraint Aen_UK
dc.contributor.authorMayor, Daniel Jen_UK
dc.description.abstractMarine planktonic copepods of the order Calanoida are central to the ecology and productivity of high latitude ecosystems, representing the interface between primary producers and fish. These animals typically undertake a seasonal vertical migration into the deep sea, where they remain dormant for periods of between three and nine months. Descending copepods are subject to low temperatures and increased hydrostatic pressures. Nothing is known about how these organisms adapt their membranes to these environmental stressors. We collected copepods (Calanoides acutus) from the Southern Ocean at depth horizons ranging from surface waters down to 1000 m. Temperature and/or pressure both had significant, additive effects on the overall composition of the membrane phospholipid fatty acids (PLFAs) in C. acutus. The most prominent constituent of the PLFAs, the polyunsaturated fatty acid docosahexanoic acid [DHA – 22:6(n-3)], was affected by a significant interaction between temperature and pressure. This moiety increased with pressure, with the rate of increase being greater at colder temperatures. We suggest that DHA is key to the physiological adaptations of vertically migrating zooplankton, most likely because the biophysical properties of this compound are suited to maintaining membrane order in the cold, high pressure conditions that persist in the deep sea. As copepods cannot synthesise DHA and do not feed during dormancy, sufficient DHA must be accumulated through ingestion before migration is initiated. Climate-driven changes in the timing and abundance of the flagellated microplankton that supply DHA to copepods have major implications for the capacity of these animals to undertake their seasonal life cycle successfully.en_UK
dc.publisherPublic Library of Science (PLoS)en_UK
dc.relationPond DW, Tarling GA & Mayor DJ (2014) Hydrostatic Pressure and Temperature Effects on the Membranes of a Seasonally Migrating Marine Copepod. PLoS ONE, 9 (10), Art. No.: e111043.
dc.rights© 2014 Pond et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_UK
dc.subjectGeneral Biochemistryen_UK
dc.subjectGenetics and Molecular Biologyen_UK
dc.subjectGeneral Agricultural and Biological Sciencesen_UK
dc.subjectGeneral Medicineen_UK
dc.titleHydrostatic Pressure and Temperature Effects on the Membranes of a Seasonally Migrating Marine Copepoden_UK
dc.typeJournal Articleen_UK
dc.citation.jtitlePLoS ONEen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.funderNatural Environment Research Councilen_UK
dc.contributor.funderBritish Antarctic Surveyen_UK
dc.contributor.affiliationScottish Association for Marine Scienceen_UK
dc.contributor.affiliationBritish Antarctic Surveyen_UK
dc.contributor.affiliationUniversity of Aberdeenen_UK
dc.description.refREF Compliant by Deposit in Stirling's Repositoryen_UK
Appears in Collections:Aquaculture Journal Articles

Files in This Item:
File Description SizeFormat 
Pond et al-PLOS-2015.PDFFulltext - Published Version963.46 kBAdobe PDFView/Open

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.