FN Archimer Export Format PT J TI Comparative study of three analysis methods (TTGE, flow cytometry and HPLC) for xenobiotic impact assessment on phytoplankton communities BT AF STACHOWSKI-HABERKORN, Sabine QUINIOU, Louis BEKER, Beatriz HABERKORN, Hansy MARIE, Dominique DE LA BROISE, Denis AS 1:1;2:2;3:3;4:2;5:4,5;6:1; FF 1:;2:;3:;4:;5:;6:; C1 Univ Europeenne Bretagne, LUBEM EA3882, UBO, F-29334 Quimper, France. Univ Europeenne Bretagne, LEMAR, UMR 6539, UBO,IUEM, F-29280 Plouzane, France. Ctr Oceanol Marseille, F-13007 Marseille, France. CNRS, Stn Biol Roscoff, F-29682 Roscoff, France. Univ Paris 06, F-29682 Roscoff, France. C2 Univ Europeenne Bretagne, LUBEM EA3882, UBO, F-29334 Quimper, France. Univ Europeenne Bretagne, LEMAR, UMR 6539, UBO,IUEM, F-29280 Plouzane, France. Ctr Oceanol Marseille, F-13007 Marseille, France. CNRS, Stn Biol Roscoff, F-29682 Roscoff, France. Univ Paris 06, F-29682 Roscoff, France. IF 3.507 TC 6 UR https://archimer.ifremer.fr/doc/00088/19888/17547.pdf LA English DT Article DE ;Microcosm;Phytoplankton community;Epoxiconazole;TTGE;Flow cytometry;HPLC AB The impacts of the fungicide Opus(A (R)) (epoxiconazole) on marine phytoplankton communities were assessed in a 12-day field experiment using in situ microcosms maintained underwater at 6 m depth. Three community analysis methods were compared for their sensitivity threshold in fungicide impact detection. When phytoplankton communities were exposed to 1 mu g l(-1) of epoxiconazole, no effects could be demonstrated using TTGE (Temporal Temperature Gradient gel Electrophoresis), flow cytometry or HPLC. When exposed to 10 mu g l(-1), TTGE fingerprints from PCR amplified 18S rDNA of communities exhibited significant differences compared with controls (ANOSIM, P = 0.028). Neither flow cytometry counts, nor HPLC pigment profiles allowed to show significant differences in microcosms exposed to 10 mu g l(-1) of epoxiconazole. When exposed to 100 mu g l(-1), all three methods allowed to detect significant differences in treated microcosms, as compared to controls. The TTGE analysis appears in this study as the most sensitive method for fungicide impact assessment on eukaryote microbial communities. PY 2009 PD APR SO Ecotoxicology SN 0963-9292 PU Springer VL 18 IS 3 UT 000263672200011 BP 364 EP 376 DI 10.1007/s10646-008-0288-8 ID 19888 ER EF