Forensic entomology, the use of insects and other arthropods in forensic investigations, is becoming increasingly more important in such investigations. To ensure its optimal use by a diverse group of professionals including pathologists, entomologists and police officers, a common frame of guidelines and standards is essential. Therefore, the European Association for Forensic Entomology has developed a protocol document for best practice in forensic entomology, which includes an overview of equipment used for collection of entomological evidence and a detailed description of the methods applied. Together with the definitions of key terms and a short introduction to the most important methods for the estimation of the minimum postmortem interval, the present paper aims to encourage a high level of competency in the field of forensic entomology.
Abstract. Forensic entomology can help to estimate the time elapsed since death, by studying the necrophagous species collected on a cadaver and its surroundings. The determination of the socalled post mortem interval (PMI or period of fi rst oviposition) is based on the development time of necrophagous dipterans and on the chronological pattern of insects' succession on the corpse throughout the decaying process. In the present study, authors investigated this succession by the analysis of the database of the Department of Forensic Entomology of the French Gendarmerie over 12 years (1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003) in order to propose a new approach and a new hypothsesis of the dynamic of necrophagous insects' populations present on a human cadaver over time. For all treated cases, the presence/absence and the oldest development stage of the species were recorded. Data were analyzed by statistical and Wagner parsimony methods. The statistic results allowed the association of groups of species with typical developmental stages. The Wagner parsimony analysis showed that the dynamic of the necrophagous insect population present on a cadaver could be characterised by specifi c species. Together, they allowed establishing hypotheses of succession of necrophagous insects on human cadavers over time that could be usefull in the PMI estimation.Résumé. Entomologie forensique : une nouvelle hypothèse de succession chronologique d'insectes nécrophages sur les cadavres humains. L'entomologie légale permet d'estimer le temps écoulé depuis la mort grâce à l'étude des insectes nécrophages collectés sur un cadavre et dans son environnement. La détermination du délai post-mortem (Post Mortem Interval ou PMI) ou de la période de première oviposition (ponte) est basée sur l'étude des temps de développement des Diptères nécrophages et de la succession des insectes sur le corps en fonction des états de décomposition. Dans cette étude, nous analysons la succession des insectes nécrophages provenant de la base de données du Département d'Entomologie de l'Institut de Recherche Criminelle de la Gendarmerie Nationale (IRCGN) au travers de 12 années d'activité (1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003). Le but de cette étude est de proposer une nouvelle approche et une nouvelle hypothèse de la dynamique des populations d'insectes nécrophages présents sur un cadavre au cours du temps. La présence/absence et le stade de développement le plus ancien par espèce sont recensés. Les données sont analysées statistiquement et par la méthode de la parcimonie de Wagner. L'analyse statistique met en évidence des associations d'espèces en fonction de stades types de développement. La parcimonie de Wagner montre que la dynamique des populations d'insectes nécrophages présents sur un cadavre, peut être caractérisée par la présence de certaines espèces. Elle permet également d'établir des hypothèses sur la succession des insectes sur les cadavres humains au cours du temps, pouvant être...
The forensic entomologist uses weather station data as part of the calculation when estimating the postmortem interval (PMI). To reduce the potential inaccuracies of this method caused by the distance between the crime scene and the meteorological station, temperature correlation data from the site of the corpse may be used. This experiment simulated the impact of retrospective weather data correction using linear regression between seven stations and sites in three climatic exposure groups during three different seasons as part of the accumulated degree days calculation for three necrophagous species (Diptera: Calliphoridae). No consistent benefit in the use of correlation or the original data from the meteorological stations was observed. In nine cases out of 12, the data from the weather station network limited the risk of a deviation from reality. The forensic entomologist should be cautious when using this correlation model.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.