Virulence of entomopathogenic bacteria Xenorhabdus bovienii and Photorhabdus luminescens against Galleria mellonella larvae
Rahoo, A. M., Mukhtar, T., Gowen, S. R. and Pembroke, B. (2011) Virulence of entomopathogenic bacteria Xenorhabdus bovienii and Photorhabdus luminescens against Galleria mellonella larvae. Pakistan Journal of Zoology, 43 (3). 543-548. ISSN 0030-9923
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Official URL: http://zsp.com.pk/vol-43.html
Keeping in view the serious health and environmental apprehensions associated with the use of pesticides, entomopathogenic symbiotic bacteria have the potential to supersede pesticides for the management of various pests. Lab experiments were conducted to test the toxicity of two bacteria Xenorhabdus bovienii and Photorhabdus luminescens at different bacterial concentrations against Galleria mellonella larvae and influence of different abiotic factors viz.: substrates, temperatures and moisture levels were ascertained on the efficacy of these bacteria. P. luminescens and X. bovienii caused the maximum mortality (99 and 90%, respectively) at a concentration of 4 x 107 cells/ml. Mortality caused by P. luminescens was significantly higher than that of X. bovienii. Highest mortality was observed on sand as compared to filter paper. A temperature of 30oC and a moisture level of 20 % were found optimum for the maximum mortality.
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