Published in Environmental Science and Pollution Research.
New Publication: ""Impact of glyphosate herbicide exposure on sperm motility, fertilization, and embryo‐larval survival of pejerrey fsh (Odontesthes bonariensis).""
The herbicide glyphosate is widely used in agricultural practices around the world, can reach aquatic environments, and potentially impact non-target organisms. This study aimed to investigate the efects of glyphosate exposure (both as the active ingredient and its formulated product) on sperm quality, fertilization success, and development of pejerrey (Odontesthes bonariensis), a native freshwater fsh species from Argentina. Results revealed a statistically signifcant increase in sperm motility at the highest concentration of the formulated product. In contrast, exposure to the active ingredient resulted in a decrease in certain motility parameters. Fertilization assays and embryonic development showed no notable efects in exposed groups. There were no efects in the morphology or temporal evolution of the embryonic stages, nor in the hatching rate. In contrast, larvae exposed to the formulated product exhibited a signifcant increase in mortality rates, reaching 100% mortality at the highest concentration within a few hours. These fndings suggest diferential susceptibility between embryos and larvae to glyphosate exposure and highlight the importance of simultaneously assessing the impacts of both the active ingredient and the entire formulation of glyphosate on freshwater fsh reproduction and development.
