Sarcosaprophagous flies in Suez governorate, Egypt IV--persistence of human pathogenic bacteria in the developmental stages.
The persistence of three species of human pathogenic bacteria (Escherichia coli, Shigella sonnei and Staphylococcus epidermidis) in sterile artificially fed larvae was examined till adult emergence after ingestion by three species of sarcosaprophagous flies (House fly, Musca domestica, Oriental latrine blow fly, Chrysomya megacephala and Australian cheep blow fly, Lucilia cuprina). The number of bacteria present in mature maggots, pupae and emerging adults declined significantly (P < 0.05). Each human pathogenic bacteria when introduced into a sterilized larval medium, was routinely recovered from larvae (10(5)), pupae (ranged from 10(3) to 10(4) and the majority of emerging flies retain 102 bacteria, whereas some are sterile. The potentiality of emerged flies to harbor bacteria is clearly different (M. domestica > C. megacephala > L. cuprina). No detection for S. epidermidis from emerged C. megacephala and L. cuprina flies, moreover S. sonnei was not detected in the emerged flies of L. cuprina.
Gabre
Refaat M
RM
Department of Entomology, Faculty of Science, Cairo University, Giza, Egypt.
D000818:Animals; D001419:Bacteria; D004175:Diptera / Q000254:growth & development* / Q000382:microbiology*; D004534:Egypt; D006801:Humans; D007814:Larva / Q000254:growth & development / Q000382:microbiology; D011679:Pupa / Q000254:growth & development / Q000382:microbiology