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Abstract Title:

Effect of glyphosate on the sperm quality of zebrafish Danio rerio.

Abstract Source:

Aquat Toxicol. 2014 Oct ;155:322-6. Epub 2014 Jul 12. PMID: 25089920

Abstract Author(s):

Fernanda Moreira Lopes, Antonio Sergio Varela Junior, Carine Dahl Corcini, Alessandra Cardoso da Silva, Vitória Gasperin Guazzelli, Georgia Tavares, Carlos Eduardo da Rosa

Article Affiliation:

Fernanda Moreira Lopes

Abstract:

Glyphosate is a systemic, non-selective herbicide widely used in agriculture worldwide. It acts as an inhibitor of the enzyme 5-enolpyruvylshikimate-3-phosphate synthase by interrupting the synthesis of essential aromatic amino acids. This pathway is not present in animals, although some studies have shown that the herbicide glyphosate can affect fish reproduction. In this study, the effect of glyphosate on sperm quality of the fish Danio rerio was investigated after 24 and 96 h of exposure at concentrations of 5mg/L and 10mg/L. The spermatic cell concentration, sperm motility and motility period were measured employing conventional microscopy. The mitochondrial functionality, membrane integrity and DNA integrity were measured by fluorescence microscopy using specific probes. No significant differences in sperm concentration were observed; however, sperm motility and the motility period were reduced after exposure to both glyphosate concentrations during both exposure periods. The mitochondrial functionality and membrane and DNA integrity were also reduced at the highest concentration during both exposure periods. The results showed that glyphosate can induce harmful effects on reproductive parameters in D. rerio and that this change would reduce the fertility rate of these animals.

Study Type : Animal Study

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Sayer Ji
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