Reference : Cidaroids spines facing ocean acidification
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/236833
Cidaroids spines facing ocean acidification
English
Dery, A. [Laboratoire de Biologie Marine, Université Libre de Bruxelles, avenue F.D. Roosevelt 50, Brussels, B-1050, Belgium]
Tran, P. D. [Laboratoire de Biologie Marine, Université Libre de Bruxelles, avenue F.D. Roosevelt 50, Brussels, B-1050, Belgium]
Compère, Philippe mailto [Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive >]
Dubois, Philippe mailto [Université de Liège - ULiège > Département médias, culture et communication > Département médias, culture et communication >]
2018
Marine Environmental Research
Elsevier Ltd
138
9-18
Yes (verified by ORBi)
International
01411136
[en] Benthos ; Epibionts ; Magnesium concentration ; Minerals ; Ocean acidification ; Sea urchin ; Spine ; Acidification ; Biofilms ; Calcium carbonate ; Dissolution ; Facings ; Magnesium ; Mammals ; Shellfish ; Magnesium concentrations ; Ocean acidifications ; Seawater corrosion ; Article ; Cidaroida ; Echinoidea ; Euechinoidea ; Adaptation, Physiological ; Animals ; Hydrogen-Ion Concentration ; Oceans and Seas ; Sea Urchins ; Seawater ; Temperature ; Water Pollutants
[en] When facing seawater undersaturated towards calcium carbonates, spines of classical sea urchins (euechinoids) show traces of corrosion although they are covered by an epidermis. Cidaroids (a sister clade of euechinoids) are provided with mature spines devoid of epidermis, which makes them, at first sight, more sensitive to dissolution when facing undersaturated seawater. A recent study showed that spines of a tropical cidaroid are resistant to dissolution due to the high density and the low magnesium concentration of the peculiar external spine layer, the cortex. The biofilm and epibionts covering the spines was also suggested to take part in the spine protection. Here, we investigate the protective role of these factors in different cidaroid species from a broad range of latitude, temperature and depth. The high density of the cortical layer and the cover of biofilm and epibionts were confirmed as key protection against dissolution. The low magnesium concentration of cidaroid spines compared to that of euechinoid ones makes them less soluble in general. © 2018 Elsevier Ltd
U600415FUniversité de BourgogneNational Council for Scientific Research, NCSRFonds De La Recherche Scientifique - FNRS, FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/236833
10.1016/j.marenvres.2018.03.012

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