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    Early colonisation of urban indoor carcasses by blow flies (Diptera: Calliphoridae): An experimental study from central Spain

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    Authors
    Martin-Vega, D cc
    Martín Nieto, C
    Cifrián, B
    Baz, A
    Díaz-Aranda, LM
    Issue date
    2017-09-01
    Submitted date
    2017-07-18
    Subject Terms
    Forensic entomology
    Oviposition
    Minimum post-mortem interval
    Calliphora
    Lucilia
    Chrysomya
    
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    Abstract
    Due to their ubiquity and synanthropy, blow flies (Diptera: Calliphoridae) are generally the first colonisers of cadavers and, therefore, frequently used to estimate a minimum post-mortem interval (minPMI). Whereas in outdoor situations blow flies are expected to locate and colonise exposed cadavers within hours or even minutes after death, it is usually assumed that the colonisation of a cadaver indoors might be delayed for an uncertain period of time. This uncertainty severely limits the informativity of minPMI estimates based on entomological evidence. Moreover, these limitations are emphasised by the lack of experimental data on insect colonisation of indoor carrion and by the fact that most of the forensic cases involving entomological evidence have been reported to occur indoors. In this study we investigate the early colonisation of pig carcasses placed indoors in a building located in the centre of an urban environment in central Spain. Three carcasses were placed in three equal rooms with a window half opened during five experimental trials: summer 2013, autumn 2013, winter 2014, spring 2014 and summer 2014. The species composition and their contribution to the carrion colonisation differed among seasons. Calliphora vicina Robineau–Desvoidy was the sole coloniser of carcasses in winter and colonised the carcasses within the first 24–48 h in every season, although Lucilia sericata (Meigen) was the first coloniser of most summer carcasses. On the other hand, Calliphora vomitoria (L.) and Chrysomya albiceps (Wiedemann) colonised the carcasses significantly later in spring and in spring and summer, respectively, with a delay of several days. In autumn, however, there were no significant differences in the colonisation times by C. vicina, L. sericata and Ch. albiceps. C. vicina and L. sericata showed a clear preference for ovipositing in the natural orifices of the carcasses, whereas Ch. albiceps oviposited more frequently on the trunk and legs.
    Citation
    Daniel Martín-Vega, Carla Martín Nieto, Blanca Cifrián, Arturo Baz, Luisa M. Díaz-Aranda, Early colonisation of urban indoor carcasses by blow flies (Diptera: Calliphoridae): An experimental study from central Spain. Forensic Science International, Vol. 278 (2017) pp. 87-94,
    Publisher
    Elsevier
    Journal
    Forensic Science International
    URI
    http://hdl.handle.net/10141/622751
    DOI
    10.1016/j.forsciint.2017.06.036
    Type
    Journal Article
    Item Description
    The attached document is the author’s final accepted/submitted version of the journal article. You are advised to consult the publisher’s version if you wish to cite from it.
    ISSN
    0379-0738
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.forsciint.2017.06.036
    Scopus Count
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    Life sciences

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