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The efficacy of the fungus filtrate Metarhizium anisopliae in the biological control of insect sawtoothed grain beetle Oryzaephilus surinamensis L. (Silvanidae: Coleoptera)on Rice | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 6, Issue 4, 2014, Pages 437-445 | ||
| Abstract | ||
| Abstract: The present study was carried to reveal the efficiency of filtrate of Metarihizum anisopliae on some biological aspects of saw toothed grain beetle Oryzaephilitis suriuamensis. HPLC technique was also used to analyze the component of the filtrate. The results showed that the filtrate contains some effective toxins such as Destruxin B, Destruxin C and Swainsonine at concentration 1.48,0.69 and 1.74 ug/ml respectively. The results also showed that There was a positive relationship between the increasing rates concentrations and the percentage of different stages of the insects being .The highest percentage at 100% concentration which reached 46.04, 50.77, 46.92, 35.22 and37.22% for egg, second larval instar, fourth larval instar, pupa and adult insect respectively as compared with 23.85, 0.00,0.00,0.00 and 0.00% in the control treatment respectively. | ||
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