Microbiological Investigations of Selected Flies of Public Health Importance

Lucilia sericata, Chrysomya spp and Musca domestica were collected from a waste dump in waste dump site of the Rivers State University of Science and Technology, Port Harcourt, Nigeria. Ogbalu et al., analysed the microbial fauna of the flies to report that:
  • A wide variety of pathogenic bacteria and fungi were isolated from these flies and were generally similar across the 3 fly species 
  • Of the 3 species the Musca domestica > Lucila sericata > Chrysomya spp in total number of colonies of bacteria and fungi, probably due to its general feeding behaviour

Bacterial Communities Associated with Houseflies

90 individual Musca domestica flies were collected within and between ten dairy farms in Denmark, and a 16S rRNA gene sequencing to analyse the species of microbes present. Bahrndorff et al., conducted the first in-depth amplicon sequencing study of the housefly microbiota, and reported:
  • Microbiota of single houseflies is highly diverse and differs between individuals
  • Presence of a very small core microbiota similarity and large variations in the microbiota between individuals
  • Farm derived flies had the richest diversity of flies, due to the diversity, abundance and nature of food sources

Assessment of non-biting synanthropic flies associated with fresh markets

4 Wet market location in Serdang, Selangor, Malaysia were mapped, classified and chosen for sampling of synantrophic flies. Khoso FN et al., reported that:
  • The 2 common species were in abundance at both sites, Chrysomya megacephala and Musca domestica
  • The 2 highest locations where adult flies congregate were ‘refuse collection piles’ and then at ‘food stalls’

Bacterial Contamination of Adult House Flies (Musca domestica) and Sensitivity of these Bacteria to Various Antibiotics

4 locations in Hamadan, Iran were selected. 2 were hospitals and 1 was a fruit and food stall and 1 was a slaughterhouse. Nazari et al, collected 300 Musca domestica flies from these locations and reported:
  • 394 bacterial strains from 275 flies
  • Bacillus spp, Staphylococcus spp. and Escherichia coli were the 3 most common bacteria found
  • Hospital environments were found to have higher levels of antibiotic resistant bacteria present on their flies populations 

Filth Fly Transmission of Escherichia coli O157:H7 and Salmonella enterica to Lettuce

Phormia regina and Musca domestica were investigated to evaluate their transmission success of the pathogen Escherichia coli O157:H7- or medically known as Salmonella enterica. Flies were encouraged to walk on lettuce leaves and observed: 
  • Phormia regina (blowflies) is more efficient in transmission of E. coli O157:H7, than Musca domestica

Prevalence of Escherichia coli O157:H7 From House Flies (Diptera: Muscidae) and Dairy Samples in North Central Florida1

Burrus RG et al., investigated the use of Musca domestica as an identifier of Escherichia coli O157:H7 populations in farm sources instead of sampling from farm manure. They reported that:
  • Fly population are 2.7 times more likely to contain Escherichia coli O157:H7 than farm manure sampling

Through The Compound Eye

Nancy Miorelli discusses the evolutionary structure of the the compund eye and the benefits it gives to flies:
reported that:
  • Compound eyes aren’t that efficient because it’s hard to compensate for low resolution, but it does allow insects to see into the UV range and even use polarized light for navigation.