Glyphosate-based herbicide exposure: effects on gill microbiota of rainbow trout (Oncorhynchus mykiss) and the aquatic bacterial ecosystem
Type | Article | ||||||||||||||||
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Date | 2022-07 | ||||||||||||||||
Language | English | ||||||||||||||||
Author(s) | Bellec Laure1, Le Du-Carré Jessy2, Almeras Fabrice2, Durand Lucile3, Cambon-Bonavita Marie-Anne3, Danion Morgane2, Morin Thierry2 | ||||||||||||||||
Affiliation(s) | 1 : University of Bordeaux - UMR EPOC 5805 CNRS – Aquatic Ecotoxicology team – Place du Dr Peyneau , F- 33120 Arcachon , France 2 : ANSES, Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail - Laboratoire de Ploufragan-Plouzané-Niort , Unité Virologie, immunologie et écotoxicologie des poissons, F- 29280 Plouzané, France 3 : University of Brest, Ifremer, CNRS, Laboratoire de Microbiologie des Environnements Extrêmes , F- 29280 Plouzané, France |
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Source | Fems Microbiology Ecology (0168-6496) (Oxford University Press (OUP)), 2022-07 , Vol. 98 , N. 8 , P. fiac076 (12p.) | ||||||||||||||||
DOI | 10.1093/femsec/fiac076 | ||||||||||||||||
WOS© Times Cited | 6 | ||||||||||||||||
Keyword(s) | chronic exposition, co-occurrence network, dysbiosis, gill, glyphosate, microbiome | ||||||||||||||||
Abstract | The herbicide glyphosate has been widely used in the past 40 years, under the assumption that side effects were minimal. In recent years, its impact on microbial compositions and potential indirect effects on plant, animal and human health have been strongly suspected. Glyphosate and co-formulates have been detected in various water sources, but our understanding of their potential effects on aquatic animals is still in its infancy compared with mammals. In this study, we investigated the effect of chronic exposure to an environmentally relevant concentration of glyphosate on bacterial communities of rainbow trout (Oncorhynchus mykiss). Gills, gut contents and gut epithelia were then analyzed by metabarcoding targeting the 16S rRNA gene. Our results revealed that rainbow trout has its own bacterial communities that differ from their surrounding habitats and possesses microbiomes specific to these three compartments. The glyphosate-based herbicide treatment significantly affected the gill microbiome, with a decrease in diversity. Glyphosate treatments disrupted microbial taxonomic composition and some bacteria seem to be sensitive to this environmental pollutant. Lastly, co-occurrence networks showed that microbial interactions in gills tended to decrease with chemical exposure. These results demonstrate that glyphosate could affect microbiota associated with aquaculture fish. |
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