FN Archimer Export Format
PT J
TI Combined effects of temperature, irradiance and pH on   Teleaulax amphioxeia   (Cryptophyceae) physiology and feeding ratio for its predator   Mesodinium rubrum   (Ciliophora)
BT 
AF Gaillard, Sylvain
   Charrier, Aurelie
   MALO, Florent
   CARPENTIER, Liliane
   Bougaran, Gael
   Hégaret, Helene
   Réveillon, Damien
   Hess, Philipp
   Séchet, Veronique
AS 1:1;2:2;3:1;4:1;5:2;6:3;7:1;8:1;9:1;
FF 1:PDG-ODE-DYNECO-PHYC;2:PDG-RBE-BRM-LPBA;3:PDG-ODE-DYNECO-PHYC;4:PDG-ODE-DYNECO-PHYC;5:PDG-RBE-BRM-LPBA;6:;7:PDG-ODE-DYNECO-PHYC;8:PDG-ODE-DYNECO-PHYC;9:PDG-ODE-DYNECO-PHYC;
C1 IFREMER Laboratoire Phycotoxines rue de l’Ile d’Yeu, F‐44311 Nantes 03, France
   IFREMER Laboratoire Physiologie et Biotechnologie des Algues (PBA) rue de l’Ile d’Yeu, F‐44311 Nantes 03, France
   IUEM‐UBO Laboratoire des sciences de l’environnement marin (LEMAR) Technopôle Brest Iroise 29280 Plouzané ,France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
SI NANTES
SE PDG-ODE-DYNECO-PHYC
   PDG-RBE-BRM-LPBA
UM LEMAR
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
IF 2.923
TC 7
UR https://archimer.ifremer.fr/doc/00609/72155/70910.pdf
LA English
DT Article
DE ;Dinophysis;ecophysiology;full factorial design;global change;Mesodinium rubrum;Teleaulax amphioxeia
AB The cryptophyte Teleaulax amphioxeia is a source of plastids for the ciliate Mesodinium rubrum and both organisms are members of the trophic chain of several species of Dinophysis. It is important to better understand the ecology of organisms at the first trophic levels before assessing the impact of principal factors of global change on Dinophysis spp. Therefore, combined effects of temperature, irradiance and pH on growth rate, photosynthetic activity and pigment content of a temperate strain of T. amphioxeia were studied using a full factorial design (central composite design 23*) in 17 individually controlled bioreactors. The derived model predicted an optimal growth rate of T. amphioxeia at a light intensity of 400 µmol photons · m‐2 · s‐1, more acidic pH (7.6) than the current average and a temperature of 17.6°C. An interaction between temperature and irradiance on growth was also found, while pH did not have any significant effect. Subsequently, to investigate potential impacts of prey quality and quantity on the physiology of the predator, M. rubrum was fed two separate prey: predator ratios with cultures of T. amphioxeia previously acclimated at two different light intensities (100 and 400 µmol photons · m‐2 · s‐1). M. rubrum growth appeared to be significantly dependant on prey quantity while effect of prey quality was not observed. This multi‐parametric study indicated a high potential for a significant increase of T. amphioxeia in future climate conditions but to what extent this would lead to increased occurrences of Mesodinium spp. and Dinophysis spp. should be further investigated. 
PY 2020
PD JUL
SO Journal Of Phycology
SN 0022-3646
PU Wiley
VL 56
IS 3
UT 000539823000017
BP 775
EP 783
DI 10.1111/jpy.12977
ID 72155
ER

EF