Low concentrations of glyphosate‐based herbicide cause complete loss of sperm motility of yellowtail tetra fish Astyanax lacustris |
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| Authors: | B. B. Gonçalves N. F. Nascimento M. P. Santos R. M. Bertolini G. S. Yasui P. C. Giaquinto |
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| Affiliation: | 1. Physiology Department, Institute of Biosciences, UNESP, Campus de Botucatu, Rua Professor Dr. Antonio Celso Wagner Zanin, S/N°. CEP 18618‐689, Brazil;2. National Center of Research and Conservation of Continental Fishes 3. – 4. CEPTA/ICMBIO, Rodovia SP‐201 (Pref. Euberto Nemésio Pereira de Godoy), km 65, Caixa Postal 64 CEP 13630970, Pirassununga, Brazil |
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| Abstract: | Environmental relevant concentrations of glyphosate‐based herbicide as 50 µg l?1, 300 µg l?1 and 1800 µg l?1 can affect sperm quality of yellowtail tetra fish Astyanax lacustris . Viability of sperm cells was impaired at 300 µg l?1, a concentration that is within legal limits in U.S.A. waterbodies, while motility was impaired at 50 µg l?1, which is the more stringent limit set in Brazilian law. Therefore, environment protection agencies must review regulations of glyphosate‐based herbicides on water bodies. |
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| Keywords: | Astyanax fish conservation fish reproduction glyphosate sperm quality |
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