@article{fdi:010063918, title = {{O}cean acidification reduces feeding rates in the scleractinian coral {S}tylophora pistillata}, author = {{H}oulbr{\`e}que, {F}anny and {R}eynaud, {S}. and {G}odinot, {C}. and {O}berhansli, {F}. and {R}odolfo-{M}etalpa, {R}iccardo and {F}errier-{P}ages, {C}.}, editor = {}, language = {{ENG}}, abstract = {{A} general decline in coral calcification has been observed in response to ocean acidification. {I}t has recently been shown that heterotrophic feeding (the acquisition of organic nutrients) enables one massive coral species to maintain its calcification rates while exposed to ocean acidification but the consequences of higher seawater partial pressure of {CO}2 ({P}-{CO}2) on coral feeding capacities themselves have never been investigated. {E}xposing long-term acclimated starved and fed colonies of the major reef builder {S}tylophora pistillata to either ambient p{H}({T}) (8.06 +/- 0.05; 417 {P}a {P}-{CO}2) or low p{H}({T}) (7.51 +/- 0.06; 1697 {P}a {P}-{CO}2) showed that higher feeding rates can counterbalance the negative effects of seawater acidification on coral calcification. {I}ndeed, relative to unfed corals under ambient p{H}({T}) conditions, calcification rates in unfed corals decreased by 53.6% but remained constant in fed corals under high {P}-{CO}2 conditions. {R}esults also clearly show that acidification affects the feeding capacity and feeding effort of the branching coral {S}. pistillata. {O}rganic nutrient acquisition was severely reduced under high {P}-{CO}2, with a simultaneous decrease in the dissolved free amino acid uptake rates, the alkaline phosphatase activities, and the feeding rates on {A}rtemia salina nauplii. {C}onsidering that all these processes are needed to fulfill the nutrient needs of the symbiotic association, on a long-term basis, lower feeding rates will likely aggravate the already fragile physiological state of many corals under warmer, more acidic conditions.}, keywords = {}, booktitle = {}, journal = {{L}imnology and {O}ceanography}, volume = {60}, numero = {1}, pages = {89--99}, ISSN = {0024-3590}, year = {2015}, DOI = {10.1002/lno.10003}, URL = {https://www.documentation.ird.fr/hor/fdi:010063918}, }