English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/152793
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Impact of ocean acidification and warming on the Mediterranean mussel (Mytilus galloprovincialis)

AuthorsGazeau, Frédéric; Alliouane, Samir; Bock, Christian; Bramanti, Lorenzo ; López Correa, Matthias; Gentile, Miriam ; Hirse, Timo; Pörtner, Hans; Ziveri, Patrizia
Issue Date26-Nov-2014
PublisherFrontiers Media
CitationFrontiers in Marine Science 1: 62 (2014)
AbstractIn order to assess the effects of ocean acidification and warming on the Mediterranean mussel (Mytilus galloprovincialis), specimens were reared in aquarium tanks and exposed to elevated conditions of temperature (+3°C) and acidity (−0.3 pH units) for a period of 10 months. The whole system comprised a factorial experimental design with 4 treatments (3 aquaria per treatment): control, lowered pH, elevated temperature, and lowered pH/elevated temperature. Mortality was estimated on a weekly basis and every 2 months, various biometrical parameters and physiological processes were measured: somatic and shell growth, metabolic rates and body fluid acid-base parameters. Mussels were highly sensitive to warming, with 100% mortality observed under elevated temperature at the end of our experiment in October. Mortality rates increased drastically in summer, when water temperature exceeded 25°C. In contrast, our results suggest that survival of this species will not be affected by a pH decrease of ~0.3 in the Mediterranean Sea. Somatic and shell growth did not appear very sensitive to ocean acidification and warming during most of the experiment, but were reduced, after summer, in the lowered pH treatment. This was consistent with measured shell net dissolution and observed loss of periostracum, as well as uncompensated extracellular acidosis in the lowered pH treatment indicating a progressive insufficiency in acid-base regulation capacity. However, based on the present dataset, we cannot elucidate if these decreases in growth and regulation capacities after summer are a consequence of lower pH levels during that period or a consequence of a combined effect of acidification and warming. To summarize, while ocean acidification will potentially contribute to lower growth rates, especially in summer when mussels are exposed to sub-optimal conditions, ocean warming will likely pose more serious threats to Mediterranean mussels in this region in the coming decades.
Publisher version (URL)http://dx.doi.org/10.3389/fmars.2014.00062
URIhttp://hdl.handle.net/10261/152793
DOI10.3389/fmars.2014.00062
ISSN2296-7745
Appears in Collections:(ICM) Artículos
Files in This Item:
File Description SizeFormat 
Gazeau_et_al_2014.pdf3,51 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.