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Comparison of the ecotoxicological impact of the triazines Irgarol 1051 and atrazine on microalgal cultures and natural microalgal communities in Lake Geneva.
Chemosphere. 2003 Dec; 53(8):935-44.C

Abstract

The antifouling herbicide Irgarol 1051 has been detected in recent years in numerous estuaries, marinas, harbors and coastal areas, and in some harbors on Lake Geneva, but so far only a few studies have investigated the ecotoxicological effects of this compound on microalgae. The purpose of this study was to assess the ecotoxicological impact of Irgarol 1051 on the algal communities of Lake Geneva, and to compare its phytotoxicity to that of the common triazine herbicide, atrazine. We investigated the response of phytoplanktonic and periphytonic algal communities and single-species isolates collected from the lake, to the PS II inhibitor Irgarol 1051 (growth, proxy of photosynthetic activity and community structure). A short-term bioassay was developed based on in vivo fluorescence, together with nanocosm experiments with natural algal communities, and single-species tests on algal strains isolated from the lake. The toxicity of Irgarol 1051 towards periphyton and phytoplankton was shown to be higher than that of atrazine. Indications of the tolerance induced by this triazine in the algal communities of Lake Geneva, suggests that even at the levels of contamination reported in some parts of the lake, Irgarol 1051 is already exerting selection pressure. Information about sensitivities, selection and tolerance from laboratory experiments are used to explain the observations in natural microalgal communities from the lake.

Authors+Show Affiliations

Bérard A
UMR CARRTEL, INRA/Univ. Savoie, Station d'Hydrobiologie Lacustre, B.P. 511, 74203 Thonon-les-Bains, France.
Dorigo U
No affiliation info available
Mercier I
No affiliation info available
Becker-van Slooten K
No affiliation info available
Grandjean D
No affiliation info available
Leboulanger C
No affiliation info available

MeSH

AtrazineBiological AssayEnvironmental MonitoringEukaryotaFluorescenceFranceFresh WaterLethal Dose 50PhytoplanktonSwitzerlandTriazinesWater Pollution, Chemical

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14505716

Citation

Bérard, A, et al. "Comparison of the Ecotoxicological Impact of the Triazines Irgarol 1051 and Atrazine On Microalgal Cultures and Natural Microalgal Communities in Lake Geneva." Chemosphere, vol. 53, no. 8, 2003, pp. 935-44.
Bérard A, Dorigo U, Mercier I, et al. Comparison of the ecotoxicological impact of the triazines Irgarol 1051 and atrazine on microalgal cultures and natural microalgal communities in Lake Geneva. Chemosphere. 2003;53(8):935-44.
Bérard, A., Dorigo, U., Mercier, I., Becker-van Slooten, K., Grandjean, D., & Leboulanger, C. (2003). Comparison of the ecotoxicological impact of the triazines Irgarol 1051 and atrazine on microalgal cultures and natural microalgal communities in Lake Geneva. Chemosphere, 53(8), 935-44.
Bérard A, et al. Comparison of the Ecotoxicological Impact of the Triazines Irgarol 1051 and Atrazine On Microalgal Cultures and Natural Microalgal Communities in Lake Geneva. Chemosphere. 2003;53(8):935-44. PubMed PMID: 14505716.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of the ecotoxicological impact of the triazines Irgarol 1051 and atrazine on microalgal cultures and natural microalgal communities in Lake Geneva. AU - Bérard,A, AU - Dorigo,U, AU - Mercier,I, AU - Becker-van Slooten,K, AU - Grandjean,D, AU - Leboulanger,C, PY - 2003/9/25/pubmed PY - 2003/12/3/medline PY - 2003/9/25/entrez SP - 935 EP - 44 JF - Chemosphere JO - Chemosphere VL - 53 IS - 8 N2 - The antifouling herbicide Irgarol 1051 has been detected in recent years in numerous estuaries, marinas, harbors and coastal areas, and in some harbors on Lake Geneva, but so far only a few studies have investigated the ecotoxicological effects of this compound on microalgae. The purpose of this study was to assess the ecotoxicological impact of Irgarol 1051 on the algal communities of Lake Geneva, and to compare its phytotoxicity to that of the common triazine herbicide, atrazine. We investigated the response of phytoplanktonic and periphytonic algal communities and single-species isolates collected from the lake, to the PS II inhibitor Irgarol 1051 (growth, proxy of photosynthetic activity and community structure). A short-term bioassay was developed based on in vivo fluorescence, together with nanocosm experiments with natural algal communities, and single-species tests on algal strains isolated from the lake. The toxicity of Irgarol 1051 towards periphyton and phytoplankton was shown to be higher than that of atrazine. Indications of the tolerance induced by this triazine in the algal communities of Lake Geneva, suggests that even at the levels of contamination reported in some parts of the lake, Irgarol 1051 is already exerting selection pressure. Information about sensitivities, selection and tolerance from laboratory experiments are used to explain the observations in natural microalgal communities from the lake. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/14505716/Comparison_of_the_ecotoxicological_impact_of_the_triazines_Irgarol_1051_and_atrazine_on_microalgal_cultures_and_natural_microalgal_communities_in_Lake_Geneva_ DB - PRIME DP - Unbound Medicine ER -