FN Archimer Export Format
PT J
TI Effets du chlorure de tributylétain sur la croissance et le métabolisme de la diatomée marine Phaeodactylum tricornutum (Bohlin)
OT Effects of tributyltin chloride on the growth and metabolism of the marine diatom phaeodactylum-tricornutum (bohlin)
BT 
AF MOUHRI, K
   MARSOT, P
   PELLETIER, E
   LOUDIKI, M
   SAINTLOUIS, R
AS 1:;2:;3:;4:;5:;
FF 1:;2:;3:;4:;5:;
C1 FAC SCI SEMLALIA,DEPT BIOL,MARRAKECH,MOROCCO
C2 FAC SCI SEMLALIA,DEPT BIOL,MARRAKECH,MOROCCO
IF 0.662
TC 3
UR https://archimer.ifremer.fr/doc/00097/20869/18487.pdf
LA French
DT Article
AB Tributyltin (TBT) is a toxic organometallic compound, used as a biocide in marine antifouling paints, that may be harmful to marine organisms living in coastal waters. This study attempts to provide a better understanding of the effects of TBT on the growth and metabolism of a dominant marine diatom from the St Lawrence Estuary: Phaeodactylum tricornutum. Experiments were conducted in batch cultures exposed during one week to TBT concentrations ranging from 0.5 to 20.0 mu g l(-1). The algal growth was much reduced by concentrations of 2.0 to 20.0 mu g l(-1), with reduction of cell density and cell death occurring within a few days at higher TBT concentrations. Exposure to pollutant also resulted in mucilaginous agglutination of cells into large, rapidly sinking aggregates. The physiological toxic effects of TBT on NO3- + NO2- uptake after a 72-hour exposure to high TBT level (20.0 mu g l(-1)) and on assimilation and incorporation activities were reflected in an important intracellular accumulation of these nutrients. Bioaccumulation of TBT by algae was detected after 24 h of continuous exposure, and concentrations increased with increasing levels of contamination. A plateau in algal bioaccumulation of organotins appeared after 72 h with a partial biodegradation of TBT into dibutyltin (DBT).
PY 1995
SO Oceanologica Acta
SN 0399-1784
PU Gauthier-Villars
VL 18
IS 3
UT A1995TH93300007
BP 363
EP 370
ID 20869
ER

EF