Journal or Publishing Institution: Environmental Toxicology and Pharmacology
Study: http://www.ncbi.nlm.nih.gov/pubmed/21783773
Author(s): Soso, A.B., Barcellos, L.J.G., Ranzani-Paiva, M.J., Kreutz, L.C., Quevedo, R.M., Anziliero, D., Lima, M., da Silva, L.B., Ritter, F., Bedin, A.C. and Finco, J.A.
Article Type: Peer Reviewed Study
Record ID: 2188
Abstract: This work was carried out to verify the effect of a glyphosate-based herbicide on Jundiá hormones (cortisol, 17β-estradiol and testosterone), oocyte and swim-up fry production. Earthen ponds containing Jundiá females were contaminated with glyphosate (3.6mg/L); blood samples were collected from eight females from each treatment immediately before, or at 1, 10, 20, 30 and 40 days following contamination. A typical post-stress rise in cortisol levels was observed at the 20th and 40th days following exposure to glyphosate. At the 40th day, 17β-estradiol was decreased in the exposed females. A similar number of oocytes were stripped out from females from both groups; however, a lower number of viable swim-up fry were obtained from the herbicide exposed females, which also had a higher liver-somatic index (LSI). The results indicate that the presence of glyphosate in water was deleterious to Rhamdia quelen reproduction, altering steroid profiles and egg viability.
Keywords: Glyphosate, Endocrine disruption, Cortisol, Estradiol, Testosterone, Rhamdia quelen
Citation: Soso, A.B., Barcellos, L.J.G., Ranzani-Paiva, M.J., Kreutz, L.C., Quevedo, R.M., Anziliero, D., Lima, M., da Silva, L.B., Ritter, F., Bedin, A.C. and Finco, J.A., 2007. Chronic exposure to sub-lethal concentration of a glyphosate-based herbicide alters hormone profiles and affects reproduction of female Jundiá (Rhamdia quelen). Environmental Toxicology and Pharmacology, 23(3), pp.308-313.
