<b>Acute toxicity of azadirachtin to a teleost, <i>Heteropneustes fossilis</i></b> - doi: 10.4025/actascibiolsci.v34i2.9455

• Main Authors: Sunil Kumar Srivastav, Ajai Kumar Srivastav, Diwakar Mishra, ManiRam Prasad, Abhishek Kumar
• Format: Article
• Language: English
• Published: Universidade Estadual de Maringá 2012-03-01
• Series: Acta Scientiarum : Biological Sciences
• Subjects: Neem, azadirachtin; LC50; Heteropneustes fossilis; fish
• Online Access: http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9455
• ISSN: 1679-9283; 1807-863X

<p class="aresumo">The acute static renewal test of a botanical pesticide - azadirachtin for the freshwater catfish, <em>Heteropneustes fossilis</em> has been performed to determine the LC₅₀ values at different exposure period. The LC50 values at various exposure periods are 173.06 mg L^-1 for 24h; 80.69 mg L^-1 for 48h; 58.57 mg L^-1 for 72h and 52.35 mg L^-1 for 96h. The upper confidence limits were 196.87, 86.91, 79.20 and 70.04 mg L^-1 for 24, 48, 72 and 96 h and lower confidence limits were 154.01, 74.24, 37.33 and 33.83 mg L^-1, respectively. These results indicate that azadirachtin exposure to the fish caused toxic effects.</p>