CRIM 451 Lecture Notes - Lecture 6: Forensic Entomology, Pus, Allantoin
22 Nov 2016
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History of forensic entomology: china 10th century, europe 1950s, britain 1930s, north america 1970. Elapsed time since death: need to know when - grieving, make or break an alibi, exonerate the innocent, aids in identi cation of body, points of investigation into correct time frame. First witness to the crime: arrive within minutes usually. Two methods of estimating time since death: dipteran larval development, hours, days, weeks, successional colonization of insects, month - year + Larval development: maggots immature blow ies, attracted immediately after death. Estimation of time since death: oldest maggots, temperature, species, how lingoes it take that species to get to that stage at that temperature, e. g. 7 days, so victim dead at least 7 days: could be more, could not be less. Successional ecology: rapidly changing ecosystem, body goes through rapid biological, chemical and physical changes, attractive to a predictable sequence of insects, varies with habitat, season, geographic area etc.
