Insects and Death: Myth and Reality
To cut through the hype, researchers have looked across existing studies to review how exactly insects have been used in legal investigations and to what extent these methods have been useful.
Based on more than 170 publications over the last century, this review, published in the open-access journal PeerJ, reveals weaknesses and mistaken beliefs regarding the use of forensic entomology as evidence of cadaver displacement as well as many promising aspects and development opportunities.
Though insect analysis has been used in legal investigation for decades, only a few forensic cases have successfully applied such a method to tell a body was moved.
Based on a case-by-case approach, species distribution, temporality, behavior and genetic analysis can be useful to infer postmortem relocation. However, such inferences should not be based on general trends or previous results at a broader scale but always rely on local experiments performed a posteriori to comply with the circumstances of a given forensic case.
Researchers also found that time is a key factor: a cadaver that remains only briefly in the first location is unlikely to be colonized by local insects, whereas a cadaver that remains for a very long period will have been abandoned by insects before cadaver relocation occurs.
Damien Charabidze
PeerJ
Citation: Use of necrophagous insects as evidence of cadaver relocation: myth or reality? http://dx.doi.org/10.7717/peerj.3506
Source: http://www.ineffableisland.com/2017/08/insects-and-death-myth-and-reality.html
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