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    An assessment of the antibacterial activity in larval excretion/secretion of four species of insects recorded in association with corpses, using Lucilia sericata Meigen as the marker species

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    Authors
    Barnes, Kate M.
    Gennard, Dorothy E.
    Dixon, Ron A.
    Affiliation
    University of Lincoln
    Issue Date
    2010-03-22
    
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    Abstract
    The relative antibacterial activities of excretion/secretion (ES) from two carrion-feeding insects, Calliphora vicina Robineau-Desvoidy and Dermestes maculatus DeGeer, and a detritivore, Tenebrio molitor Linnaeus, were compared to that of Lucilia sericata Meigen, a species with ES of known antibacterial capacity, in order to explore the antimicrobial potential of other carrion and detritivore species. Viable counts were used to assess time-kill of ES against five bacterial species, Staphylococcus aureus, Escherichia coli, Bacillus cereus, Pseudomonas aeruginosa and Proteus mirabilis. Antibacterial activity was recorded in all four insect species although T. molitor and D. maculatus were the most effective in controlling growth of P. mirabilis. The blowflies were more effective in controlling a wider range of both Gram-positive and Gram-negative bacteria. The larval ES from all species was shown to reduce bacterial growth rate although differences in antibacterial spectrum were noted and the degree of potency varied between the four species. These differences may be explained ecologically by the different colonisation times of each insect species on the corpse. Overall, this study demonstrates that research into other carrion-feeding insect species has potential to provide an increased source of antimicrobial chemicals to broaden the range of bacterial species beyond that currently controlled using L. sericata.
    Citation
    Barnes, K. M. et al (2010) 'An assessment of the antibacterial activity in larval excretion/secretion of four species of insects recorded in association with corpses, using Lucilia sericata Meigen as the marker species', Bulletin of Entomological Research, 100 (06):635
    Publisher
    Cambridge University Press
    Journal
    Bulletin of Entomological Research
    URI
    http://hdl.handle.net/10545/621246
    DOI
    10.1017/S000748530999071X
    Additional Links
    http://www.journals.cambridge.org/abstract_S000748530999071X
    Type
    Article
    Language
    en
    ISSN
    00074853
    EISSN
    14752670
    ae974a485f413a2113503eed53cd6c53
    10.1017/S000748530999071X
    Scopus Count
    Collections
    School of Environmental Sciences

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