Combined effects of short-term ocean acidification and heat shock in a benthic copepod Tigriopus japonicus Mori

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dc.contributor.authorLi, W.
dc.contributor.authorHan, G.
dc.contributor.authorDong, Y.
dc.contributor.authorIshimatsu, A.
dc.contributor.authorRussell, B.
dc.contributor.authorGao, K.
dc.date.issued2015
dc.descriptionFirst online: 20 August 2015
dc.description.abstractWarming of the world’s oceans is predicted to have many negative effects on organisms as they have optimal thermal windows. In coastal waters, however, both temperatures and pCO2 (pH) exhibit diel variations, and biological performances are likely to be modulated by physical and chemical environmental changes. To understand how coastal zooplankton respond to the combined impacts of heat shock and increased pCO2, the benthic copepod Tigriopus japonicus were treated at temperatures of 24, 28, 32 and 36 °C to simulate natural coastal temperatures experienced in warming events, when acclimated in the short term to either ambient (LC, 390 μatm) or future CO2 (HC, 1000 μatm). HC and heat shock did not induce any mortality of T. japonicus, though respiration increased up to 32 °C before being depressed at 36 °C. Feeding rate peaked at 28 °C but did not differ between CO2 treatments. Expression of heat shock proteins (hsps mRNA) was positively related to temperature, with no significant differences between the CO2 concentrations. Nauplii production was not affected across all treatments. Our results demonstrate that T. japonicus responds more sensitively to heat shocks rather than to seawater acidification; however, ocean acidification may synergistically act with ocean warming to mediate the energy allocation of copepods.
dc.description.statementofresponsibilityWei Li, Guodong Han, Yunwei Dong, Atsushi Ishimatsu, Bayden D. Russell, Kunshan Gao
dc.identifier.citationMarine Biology: international journal on life in oceans and coastal waters, 2015; 162(9):1901-1912
dc.identifier.doi10.1007/s00227-015-2722-9
dc.identifier.issn0025-3162
dc.identifier.issn1432-1793
dc.identifier.orcidRussell, B. [0000-0003-1282-9978]
dc.identifier.urihttp://hdl.handle.net/2440/97608
dc.language.isoen
dc.publisherSpringer-Verlag
dc.rights© Springer-Verlag Berlin Heidelberg 2015
dc.source.urihttps://doi.org/10.1007/s00227-015-2722-9
dc.titleCombined effects of short-term ocean acidification and heat shock in a benthic copepod Tigriopus japonicus Mori
dc.typeJournal article
pubs.publication-statusPublished

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