FN Archimer Export Format
PT J
TI Low exposure levels of urban metals induce heterotrophic community tolerance: a microcosm validation
BT 
AF FECHNER, Lise
   GOURLAY-FRANCE, Catherine
   TUSSEAU-VUILLEMIN, Marie-Helene
AS 1:1,2;2:1,2;3:3;
FF 1:;2:;3:PDG-DS;
C1 Cemagref Unite Rech Hydrosyst & Bioproc, F-92163 Antony, France.
   FIRE, F-75005 Paris, France.
   IFREMER, F-92138 Issy Les Moulineaux, France.
C2 CEMAGREF, FRANCE
   FIRE, FRANCE
   IFREMER, FRANCE
SI SIEGE
SE PDG-DS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
IF 2.355
TC 11
UR https://archimer.ifremer.fr/doc/00036/14682/12028.pdf
LA English
DT Article
DE ;Biofilms;Urban metal;Community tolerance;ARISA
AB The biological response of periphyton chronically exposed to metals of urban origin (Cd, Ni and Zn) was investigated with a Pollution-Induced Community Tolerance (PICT) approach using a previously developed short-term toxicity test based on beta-glucosidase (heterotrophic) activity. Periphyton was grown on plastic membranes immersed in indoor aquaria contaminated with metals at realistic contamination levels (0.3, 3 mu g/l for Cd, 5, 50 mu g/l for Ni, 20, 200 mu g/l for Zn). After 3 weeks of exposure, biofilms' parameters (dry-weight, chlorophyll a concentration, heterotrophic activity) were analyzed and tolerance acquisition of the heterotrophic communities was assessed using the toxicity test. Modifications of bacterial and eukaryotic community structure were assessed with Automated Ribosomal Intergenic Spacer Analysis (ARISA). Effects of metal exposure were observed on biofilms parameters in the Cd and Zn experiments. Tolerance levels increased for both Cd-exposed biofilms, and for the high metal treatment biofilms in the Ni and Zn experiments. Analysis of the ARISA profiles showed that metal exposure affected the structure of both bacterial and eukaryotic communities. Moreover, Cd tolerance of the Zn-exposed heterotrophic communities was evaluated, which showed that the Zn-tolerant community (high metal treatment in the Zn experiment) also became tolerant to Cd (co-tolerance). The study shows that tolerance acquisition can be detected after exposure to environmental metal concentrations using beta-glucosidase activity as an endpoint in short-term toxicity tests.
PY 2011
PD JUL
SO Ecotoxicology
SN 0963-9292
PU Springer
VL 20
IS 4
UT 000290330100016
BP 793
EP 802
DI 10.1007/s10646-011-0630-4
ID 14682
ER

EF