Abstract
The Culicinomyces clavisporus is a fungal pathogen of a wide range of mosquito larvae. The C. clavisporus was isolated from the larvae of Culiseta inornata. We have investigated into potential pathogenicity against the adults of Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi. The culture filtrates released from the strain of C. clavisporus 46258 were grown in the EmYPss broth, were filtered and used for the bioassays after a growth of 15 days. The results demonstrated these metabolites with LC50, LC90 and LC99 values of C. quinquefasciatus, 5.62, 8.71 and 12.59, A. aegypti, 3.0, 7.0 and 9.3, and A. stephensi 2.69, 6.0 and 7.24 μl/cm2, respectively after exposure for 24 h. These results compared favorably with the commercial adulticide Gokilaht®-S 5EC (d,d-trans-cyphenothrin) that showed 100% mortality at the same concentration. This study successfully identified that the metabolites of C. clavisporus can be used as mosquitoes adulticide as safer alternative to modern synthetic chemical insecticide against mosquito vector of diseases. Further purification can lead to biotechnological exploitation.
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Acknowledgements
We thank Prof. V.G. Das, Director, Dayalbagh Educational Institute, for his encouragements. We are also thankful to the DST (C-24 Soam Prakash), UGC New Delhi of major research project for the financial support 2011 and to DST-FIST program (2003–2008) for providing laboratory facilities. G. Singh is indebted to UGC, New Delhi, for an award of Post-Doctoral Fellowship (2009–2011).
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Singh, G., Prakash, S. Evaluation of culture filtrates of Culicinomyces clavisporus: Mycoadulticide for Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi . Parasitol Res 110, 267–272 (2012). https://doi.org/10.1007/s00436-011-2482-5
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DOI: https://doi.org/10.1007/s00436-011-2482-5