Chronic exposure to sub-lethal concentration of a glyphosate-based herbicide alters hormone profiles and affects reproduction of female Jundiá (Rhamdia quelen)
| Autor: | Leonardo Bolognesi da Silva, Filipe Ritter, Jovani Finco, Deniz Anziliero, Rosmari Mezzalira Quevedo, Leonardo José Gil Barcellos, Marina Ragagnin de Lima, Luiz Carlos Kreutz, Alexandra Calliari Bedin, Auren Benck Soso, Maria José Tavares Ranzani-Paiva |
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| Rok vydání: | 2007 |
| Předmět: |
Pharmacology
Chronic exposure Health Toxicology and Mutagenesis media_common.quotation_subject General Medicine Biology Toxicology Oocyte chemistry.chemical_compound Animal science medicine.anatomical_structure Rhamdia quelen chemistry Glyphosate medicine Reproduction Cortisol level Testosterone Hormone media_common |
| Zdroj: | Environmental Toxicology and Pharmacology. 23:308-313 |
| ISSN: | 1382-6689 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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