FN Archimer Export Format
PT J
TI Effect of chronic ammonia exposure on growth of European seabass (Dicentrarchus labrax) juveniles
BT 
AF LEMARIE, Gilles
   DOSDAT, Antoine
   COVES, Denis
   DUTTO, Gilbert
   GASSET, Eric
   PERSON, Jeannine
AS 1:1;2:2;3:1;4:1;5:1;6:2;
FF 1:PDG-DRV-RA-LPALAVAS;2:PDG-DS;3:PDG-DRV-RA-LPALAVAS;4:PDG-DRV-RA-LPALAVAS;5:PDG-DRV-RA-LPALAVAS;6:PDG-DRV-RA-ARN;
C1 IFREMER, Stn Expt Aquaculture, F-34250 Palavas Les Flots, France.
   IFREMER, Ctr Brest, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI PALAVAS
   SIEGE
   BREST
SE PDG-DRV-RA-LPALAVAS
   PDG-DS
   PDG-DRV-RA-ARN
IN WOS Ifremer jusqu'en 2018
IF 1.627
TC 137
UR https://archimer.ifremer.fr/doc/2004/publication-628.pdf
LA English
DT Article
DE ;Plasma ammonia;Growth;Seabass;Chronic toxicity;Ammonia
AB Chronic effects of ammonia were studied in juvenile seabass, Dicentrarchus labrax (mean weight= 11 g), exposed for 63 days to eight stable ammonia concentrations, ranging from 0.24 to 0.90 mg l(-1) unionised ammonia nitrogen (UIA-N), respectively, from 6.1 to 22.3 mg l(-1) total ammonia nitrogen (TA-N). Temperature (21.8 degreesC), pH (8.0), salinity (37.0 ppt), and oxygen concentration (over 80% saturation at the outlet) were maintained constant. Fish were fed using a self-feeder device, and they were starved during the last 8 days. Mortality of 28.9 and 42.6% occur-red within the first 8 days at the two highest UIA-N concentrations, respectively, 0.90 and 0.88 mg l(-1). From days 0 to 55, a 1.8-fold increase in weight gain was observed under the 0.90-mg l(-1) UIA-N condition, compared to a 3.4-fold increase in the control. Weight gains were negatively correlated to ambient ammonia concentrations. Weight loss, or a transient period of growth stagnation, was observed from the onset of ammonia exposure to day 13 in seabass exposed to concentrations above 0.43 mg l(-1) UIA-N. After day 13, weight gains were observed in all groups, indicating that the fish were able to adapt to increased ambient ammonia concentrations over time. By the end of the experiment, plasma ammonia levels were positively related to ambient ammonia concentrations, and oxygen consumption recorded in fasting fish was significantly dependent on ammonia concentrations. In seabass juveniles, the 0.26-mg l(-1) UIA-N concentration, under an average pH of 8.0, can be considered as a safe long-term limit conditions in seawater. 
PY 2004
SO Aquaculture
SN 0044-8486
PU Elsevier
VL 229
IS 1-4
UT 000187739300036
BP 479
EP 491
DI 10.1016/S0044-8486(03)00392-2
ID 628
ER

EF