FN Archimer Export Format
PT J
TI Differential influence of life cycle on growth and toxin production of three   Pseudo-nitzschia   species (Bacillariophyceae)
BT 
AF Sauvey, Aurore
   Claquin, Pascal
   Le Roy, Bertrand
   LE GAC, Mickael
   Fauchot, Juliette
AS 1:1,2;2:1,2;3:1,2;4:3;5:1,2;
FF 1:;2:;3:;4:PDG-ODE-DYNECO-PELAGOS;5:;
C1 Normandie Univ; UNICAEN; CNRS; BOREA; 14000 Caen ,France
   Unité Biologie des Organismes et Ecosystèmes Aquatiques (BOREA); Muséum National d'Histoire Naturelle; Sorbonne Université; Université de Caen Normandie; Université des Antilles; CNRS; IRD 14000 Caen ,France
   Ifremer, DYNECO PELAGOS; 29280 Plouzané ,France
C2 UNIV CAEN NORMANDIE, FRANCE
   MNHN, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-PELAGOS
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 2.328
TC 6
UR https://archimer.ifremer.fr/doc/00505/61679/65622.pdf
LA English
DT Article
DE ;cell size;domoic acid;growth;life cycle;Pseudo-nitzschia strains
AB We used a multi‐strain approach to study the intra‐ and interspecific variability of the growth rates of three Pseudo‐nitzschia species – P. australis, P. fraudulenta, and P. pungens – and of their domoic acid (DA) production. We carried out mating and batch experiments to investigate the respective effects of strain age and cell size, and thus the influence of their life cycle on the physiology of these species. The cell size ‐ life cycle relationship was characteristic of each species. The influence of age and cell size on the intraspecific variability of growth rates suggests that these characteristics should be considered cautiously for the strains used in physiological studies on Pseudo‐nitzschia species. The results from all three species do not support the hypothesis of a decrease in DA production with time since isolation from natural populations. In P. australis, the cellular DA content was rather a function of cell size. More particularly, cells at the gametangia stage of their life cycle contained up to six times more DA than smaller or larger cells incapable of sexual reproduction. These findings reveal a link between P. australis life cycle and cell toxicity. This suggest that life cycle dynamics in Pseudo‐nitzschia natural populations may influence bloom toxicity. 
PY 2019
PD OCT
SO Journal Of Phycology
SN 0022-3646
PU Wiley
VL 55
IS 5
UT 000483140900001
BP 1126
EP 1139
DI 10.1111/jpy.12898
ID 61679
ER

EF