Study the pathogenicity of the bacteria associated with Periplanta americana cockroach on Gelleria mollonella. L worm larva

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Abstract In this study, the bacterial genera associated with the Periplaneta americana cockroach were isolated from the residential areas and nurseries in Baghdad city with concentrations 10-2, 10-4, 10-6 and their effect on the larvae of Gelleria mollonella. L worm was studied in the laboratory by food spraying method. Conclusion: The results showed that the highest percentage of larvae mortality was at the concentration 10-2 (33.33%) for both Acinetobacter lwoffii and Enterobacter cloacae bacteria. While the highest rate of larvae mortality was at the concentration 10-4 (33.33%) for each of Pseudomonas oleovorans, Acinetobacter baumannii, Acinetobacter lwoffii and Klebsiella pneumoniae, whereas the concentration 10-6 showed the highest mortality rate (50%) of Pseudomonas oleovorans and Klebsiellaella bacteria. Results of the study showed predominance of the effect of Pseudomonas oleovorans and Klebsiella pneumonia on the mortality rate of the larvae of the great Gelleria mellonell L. worm as it was 50%, while the effect of Enterobacter cloacae and Pseudomonas oleovorans yielded the highest mortality rate of 33.33% at each of the concentrations 10-2,10-4 10-6 whereas the results showed that the concentration 10-2 for each of Proteus mirabilis, Escherichia coli, and Enterobacter aerogenes had no effect on larvae mortality.

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