Ecotoxicological risk assessment for the herbicide glyphosate to non-target aquatic species: A case study with the mussel Mytilus galloprovincialis. (February 2018)

• Record Type: Journal Article
• Authors: Matozzo, Valerio; Fabrello, Jacopo; Masiero, Luciano; Ferraccioli, Federico; Finos, Livio; Pastore, Paolo; Di Gangi, Iole Maria; Bogialli, Sara
• Is Part Of: Environmental pollution. Volume 233(2018)
• Page Start: 623
• Page End: 632
• Publication Date: 2018-02
• Subjects: Herbicide -- Glyphosate -- Mussel -- Biomarker; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2017.10.100
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Glyphosate (GLY) is one of the most used herbicide worldwide. Considering that information concerning the impact of GLY on bivalves is scarce, in this study we evaluated for the first time the effects of environmentally realistic concentrations of GLY (10, 100 and 1000 μg/L) to the mussel Mytilus galloprovincialis . Mussels were exposed for 7, 14 and 21 days and several biomarkers were measured in haemocytes/haemolymph (total haemocyte counts, haemocyte diameter and volume, haemolymph pH, haemolymph lactate dehydrogenase activity, haemocyte lysate lysozyme and acid phosphatase activities), as well as in gills and digestive gland (antioxidant enzyme and acetylcholinesterase activities). The concentrations of GLY and its main metabolite aminomethylphosphonic acid in the experimental tanks were also measured. The MANOVA analysis demonstrated that the experimental variables considered (exposure concentration, exposure duration, and their interaction) affected significantly biomarker responses. In addition, the two-way ANOVA analysis indicated that GLY was able to affect most of the cellular parameters measured, whereas antioxidant enzyme activities resulted to be influenced moderately. Interestingly, exposure to GLY reduced significantly acetylcholinesterase activity in gills. Although preliminary, the results of this study demonstrated that GLY can affect both cellular and biochemical parameters in mussels, highlighting a potential risk for aquatic invertebrates. Graphical abstract: Image 1 Highlights: Assessing the impact of glyphosate to aquatic non-target species. Mussels were used as model organisms. A suite of biomarkers was measured in different tissues. Glyphosate affected haemocyte parameters and AChE activity.