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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Perez, Anne E. Haskell, Neal H. Wells, Jeffrey D. |
| Description | Author Affiliation: Perez AE ( Department of Biology, West Virginia University, 53 Campus Drive, Morgantown, WV 26505, United States. Electronic address: anicho16@mix.wvu.edu.); Haskell NH ( Department of Biology, Saint Joseph's College, 1498 S College Ave, Rensselaer, IN 47978, United States. Electronic address: blowfly@technologist.com.); Wells JD ( Department of Biological Sciences and International Forensic Research Institute, Florida International University, 11200 SW 8th Street, Miami, FL 33199, United States. Electronic address: jedwell@fiu.edu.) |
| Abstract | Carrion insect succession patterns have long been used to estimate the postmortem interval (PMI) during a death investigation. However, no published carrion succession study included sufficient replication to calculate a confidence interval about a PMI estimate based on occurrence data. We exposed 53 pig carcasses (16±2.5 kg), near the likely minimum needed for such statistical analysis, at a site in north-central Indiana, USA, over three consecutive summer seasons. Insects and Collembola were sampled daily from each carcass for a total of 14 days, by this time each was skeletonized. The criteria for judging a life stage of a given species to be potentially useful for succession-based PMI estimation were (1) nonreoccurrence (observed during a single period of presence on a corpse), and (2) found in a sufficiently large proportion of carcasses to support a PMI confidence interval. For this data set that proportion threshold is 45/53. Of the 266 species collected and identified, none was nonreoccuring in that each showed at least a gap of one day on a single carcass. If the definition of nonreoccurrence is relaxed to include such a single one-day gap the larval forms of Necrophilaamericana, Fanniascalaris, Cochliomyia macellaria, Phormiaregina, and Luciliaillustris satisfied these two criteria. Adults of Creophilus maxillosus, Necrobiaruficollis, and Necrodessurinamensis were common and showed only a few, single-day gaps in occurrence. C.maxillosus, P.regina, and L.illustris displayed exceptional forensic utility in that they were observed on every carcass. Although these observations were made at a single site during one season of the year, the species we found to be useful have large geographic ranges. We suggest that future carrion insect succession research focus only on a limited set of species with high potential forensic utility so as to reduce sample effort per carcass and thereby enable increased experimental replication. |
| File Format | HTM / HTML |
| ISSN | 03790738 |
| Volume Number | 241 |
| e-ISSN | 18726283 |
| Journal | Forensic Science International |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-08-01 |
| Publisher Place | Ireland |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Forensic Science Confidence Intervals Entomology Humans Feeding Behavior Journal Article Beetles Animals Larva Swine Forensic Pathology Postmortem Changes Diptera |
| Content Type | Text |
| Resource Type | Article |
| Subject | Law Pathology and Forensic Medicine |
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