author(s)
Ghazwan T Khudair and Atallah F Mekhlif

abstract
The antibacterial activity of excretion/secretion (ES) from flesh feeding blow fly, Calliphora vomitaria L. were relatively compared with that of Ceftriaxone (CRO) as standard drug. The larval ES was obtained from both normal fed larvae and others cannibalized infected larvae with the four studied pathogenic bacteria. Diffusion disc test was used to assess ES viability against the sensitive and piperacillin resistant bacterial species; Staphylococcus aureus, Escherichia coli, Pseudomonus aeruginosa and Klebsiella pnuemuoniae. The antibacterial potency of the two fractionation phases of ES in DMSO were varied among that four species. This potency depends upon the fractionated ES phase. Generally, dense (upper) and clear (lower) phases of normal ES more effective against Gram-positive than Gram-negative species, while not that for phases of ES collected from cannibalized infected larvae. It was found the growth inhibition zones significantly very varied between antibacterial activity of ES and CRO. Overall, the present result gives opportunity promise for qualitative evolution new resources against antimicrobe from larvae products.