FN Archimer Export Format
PT J
TI Heterotrophy promotes the re-establishment of photosynthate translocation in a symbiotic coral after heat stress
BT 
AF TREMBLAY, Pascale
   GORI, Andrea
   MAGUER, Jean-Francois
   HOOGENBOOM, Mia
   FERRIER-PAGES, Christine
AS 1:1,4;2:1;3:2;4:3;5:1;
FF 1:;2:;3:;4:;5:;
C1 Ctr Sci Monaco, Monaco, Monaco.
   Inst Univ Europeen Mer, IRD, CNRS, LEMAR UMR UBO 6539, Pl Nicolas Copernic, Plouzane, France.
   James Cook Univ, Sch Marine & Trop Biol, Townsville, Qld, Australia.
   Univ Quebec Rimouski, Dept Biol Chim & Geog, Rimouski, PQ, Canada.
C2 CTR SCI MONACO, MONACO
   UBO, FRANCE
   UNIV JAMES COOK, AUSTRALIA
   UNIV QUEBEC RIMOUSKI, CANADA
UM LEMAR
IN DOAJ
IF 4.259
TC 73
UR https://archimer.ifremer.fr/doc/00616/72835/72989.pdf
   https://archimer.ifremer.fr/doc/00616/72835/72990.pdf
LA English
DT Article
AB Symbiotic scleractinian corals are particularly affected by climate change stress and respond by bleaching (losing their symbiotic dinoflagellate partners). Recently, the energetic status of corals is emerging as a particularly important factor that determines the corals' vulnerability to heat stress. However, detailed studies of coral energetic that trace the flow of carbon from symbionts to host are still sparse. The present study thus investigates the impact of heat stress on the nutritional interactions between dinoflagellates and coral Stylophora pistillata maintained under auto-and heterotrophy. First, we demonstrated that the percentage of autotrophic carbon retained in the symbionts was significantly higher during heat stress than under non-stressful conditions, in both fed and unfed colonies. This higher photosynthate retention in symbionts translated into lower rates of carbon translocation, which required the coral host to use tissue energy reserves to sustain its respiratory needs. As calcification rates were positively correlated to carbon translocation, a significant decrease in skeletal growth was observed during heat stress. This study also provides evidence that heterotrophic nutrient supply enhances the re-establishment of normal nutritional exchanges between the two symbiotic partners in the coral S. pistillata, but it did not mitigate the effects of temperature stress on coral calcification. 
PY 2016
PD DEC
SO Scientific Reports
SN 2045-2322
PU Nature Publishing Group
VL 6
IS 38112
UT 000389129900001
DI 10.1038/srep38112
ID 72835
ER

EF