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Author (up) Lardies, M.A.; Arias, M.B.; Poupin, M.J.; Manriquez, P.H.; Torres, R.; Vargas, C.A.; Navarro, J.M.; Lagos, N.A. pdf  doi
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  Title Differential response to ocean acidification in physiological traits of Concholepas concholepas populations Type
  Year 2014 Publication Journal Of Sea Research Abbreviated Journal J. Sea Res.  
  Volume 90 Issue Pages 127-134  
  Keywords Environmental gradient; Gastropod; Metabolism; HsP70; Gene expression; Phenotypic flexibility  
  Abstract Phenotypic adaptation to environmental fluctuations frequently occurs by preexisting plasticity and its role as a major component of variation in physiological diversity is being widely recognized. Few studies have considered the change in phenotypic flexibility among geographic populations in marine calcifiers to ocean acidification projections, despite the fact that this type of study provides understanding about how the organism may respond to this chemical change in the ocean. We examined the geographic variation in CO2 seawater concentrations in the phenotype and in the reaction norm of physiological traits using a laboratory mesocosm approach with short-term acclimation in two contrasting populations (Antofagasta and Calfuco) of the intertidal snail Concholepas concholepas. Our results show that elevated pCO(2) conditions increase standard metabolic rates in both populations of the snail juveniles, likely due to the higher energy cost of homeostasis. juveniles of C concholepas in the Calfuco (southern) population showed a lower increment of metabolic rate in high-pCO(2) environments concordant with a lesser gene expression of a heat shock protein with respect to the Antofagasta (northern) population. Combined these results indicate a negative effect of ocean acidification on whole-organism functioning of C. concholepas. Finally, the significant Population x pCO(2) level interaction in both studied traits indicates that there is variation between populations in response to high-pCO(2) conditions. (C) 2014 Elsevier BM. All rights reserved.  
  Address [Lardies, Marco A.; Belen Arias, Maria] Univ Adolfo Ibanez, Fac Artes Liberles, Santiago, Chile, Email: marco.lardies@ual.cl  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1385-1101 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000337854800013 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 381  
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