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Título

Copepod vital rates under CO2-induced acidification: a calanoid species and a cyclopoid species under short-term exposures

AutorIsari, Stamatina CSIC ORCID; Zervoudaki, Soultana; Saiz, Enric CSIC ORCID ; Pelejero, Carles CSIC ORCID ; Peters, J.
Palabras claveMarine copepods
Acidification
Reproduction
Feeding
Respiration
Fecha de publicaciónsep-2015
EditorOxford University Press
CitaciónJournal of Plankton Research 37(5): 912-922 (2015)
ResumenAlthough copepods have been considered tolerant against the direct influence of the ocean acidification (OA) projected for the end of the century, some recent studies have challenged this view. Here, we have examined the direct impact of short-term exposure to a pCO<inf>2</inf>/pH level relevant for the year 2100 (pH<inf>NBS</inf>, control: 8.18, low pH: 7.78), on the physiological performance of two representative marine copepods: the calanoid Acartia grani and the cyclopoid Oithona davisae. Adults of both species, from laboratory cultures, were preconditioned for four consecutive days in algal suspensions (Akashiwo sanguinea) prepared with filtered sea water pre-adjusted to the targeted pH values via CO<inf>2</inf> bubbling. We measured the feeding and respiratory activity and reproductive output of those pre-conditioned females. The largely unaffected fatty acid composition of the prey offered between OA treatments and controls supports the absence in the study of indirect OA effects (i.e. changes of food nutritional quality). Our results show no direct effect of acidification on the vital rates examined in either copepod species. Our findings are compared with results from previous short-and long-term manipulative experiments on other copepod species. © 2015 The Author
Descripción11 pages, 3 figures, 2 tables
Versión del editorhttp://dx.doi.org/10.1093/plankt/fbv057
URIhttp://hdl.handle.net/10261/123983
DOI10.1093/plankt/fbv057
Identificadoresdoi: 10.1093/plankt/fbv057
issn: 0142-7873
e-issn: 1464-3774
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