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dc.contributor.authorStrand, Roger
dc.contributor.authorWhalan, Stephen
dc.contributor.authorWebster, Nicole S.
dc.contributor.authorKutti, Tina
dc.contributor.authorFang, James Kar-Hei
dc.contributor.authorLuter, Heidi M.
dc.contributor.authorBannister, Raymond
dc.PublishedStrand R, Whalan S, Webster, Kutti T, Fang K, Luter, Bannister R. The response of a boreal deep-sea sponge holobiont to acute thermal stress. Scientific Reports. 2017;7:1660eng
dc.description.abstractEffects of elevated seawater temperatures on deep-water benthos has been poorly studied, despite reports of increased seawater temperature (up to 4 °C over 24 hrs) coinciding with mass mortality events of the sponge Geodia barretti at Tisler Reef, Norway. While the mechanisms driving these mortality events are unclear, manipulative laboratory experiments were conducted to quantify the effects of elevated temperature (up to 5 °C, above ambient levels) on the ecophysiology (respiration rate, nutrient uptake, cellular integrity and sponge microbiome) of G. barretti. No visible signs of stress (tissue necrosis or discolouration) were evident across experimental treatments; however, significant interactive effects of time and treatment on respiration, nutrient production and cellular stress were detected. Respiration rates and nitrogen effluxes doubled in responses to elevated temperatures (11 °C & 12 °C) compared to control temperatures (7 °C). Cellular stress, as measured through lysosomal destabilisation, was 2–5 times higher at elevated temperatures than for control temperatures. However, the microbiome of G. barretti remained stable throughout the experiment, irrespective of temperature treatment. Mortality was not evident and respiration rates returned to pre-experimental levels during recovery. These results suggest other environmental processes, either alone or in combination with elevated temperature, contributed to the mortality of G. barretti at Tisler reef.en_US
dc.publisherNature Publishing Groupen_US
dc.rightsAttribution CC BYeng
dc.titleThe response of a boreal deep-sea sponge holobiont to acute thermal stressen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2017 The Author(s)en_US
dc.source.journalScientific Reports
dc.relation.projectNorges forskningsråd: 203894
dc.relation.projectHavforskningsinstituttet: 14515

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