Document Detail

Vector potential of houseflies for the bacterium Aeromonas caviae.
MedLine Citation:
PMID:  12109714     Owner:  NLM     Status:  MEDLINE    
Houseflies, Musca domestica Linnaeus (Diptera: Muscidae), have been implicated as vectors or transporters of numerous gastrointestinal pathogens encountered during feeding and ovipositing on faeces. The putative enteropathogen Aeromonas caviae (Proteobacteria: Aeromonadaceae) may be present in faeces of humans and livestock. Recently A. caviae was detected in houseflies by PCR and isolated by culture methods. In this study, we assessed the vector potential of houseflies for A. caviae relative to multiplication and persistence of the bacterium in the fly and to contamination of other flies and food materials. In experimentally fed houseflies, the number of bacteria increased up to 2 days post-ingestion (d PI) and then decreased significantly 3 d PI. A large number of bacteria was detected in the vomitus and faeces of infected flies at 2-3 d PI. The bacteria persisted in flies for up to 8 d PI, but numbers were low. Experimentally infected flies transmitted A. caviae to chicken meat, and transmissibility was directly correlated with exposure time. Flies contaminated the meat for up to 7 d PI; however, a significant decrease in contamination was observed 2-3 d PI. In the fly-to-fly transmission experiments, the transmission of A. caviae was observed and was apparently mediated by flies sharing food. These results support houseflies as potential vectors for A. caviae because the bacterium multiplied, persisted in flies for up to 8 d PI, and could be transmitted to human food items.
D Nayduch; G Pittman Noblet; F J Stutzenberger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medical and veterinary entomology     Volume:  16     ISSN:  0269-283X     ISO Abbreviation:  Med. Vet. Entomol.     Publication Date:  2002 Jun 
Date Detail:
Created Date:  2002-07-11     Completed Date:  2002-11-12     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8708682     Medline TA:  Med Vet Entomol     Country:  England    
Other Details:
Languages:  eng     Pagination:  193-8     Citation Subset:  IM    
Department of Biological Sciences, Clemson University, South Carolina 29634-0326, USA.
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MeSH Terms
Aeromonas / genetics,  growth & development,  isolation & purification*
Feces / microbiology,  parasitology
Food Contamination
Food Microbiology
Gram-Negative Bacterial Infections / transmission*
Houseflies / microbiology*
Insect Vectors / microbiology*
Polymerase Chain Reaction / veterinary
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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