Temperature: the weak point of forensic entomology

Int J Legal Med. 2019 Mar;133(2):633-639. doi: 10.1007/s00414-018-1898-1. Epub 2018 Jul 24.

Abstract

Measuring temperature is a key factor in forensic entomology. While noting factors to consider for a posteriori temperature estimation, many studies lack detailed methods or general rules allowing their integration into insect development-time calculations. This article proposes tools for determining the adequacy of weather station temperature datasets versus the local temperature experienced by carrion breeders. The idea is to start from a local scale (i.e., the cadaver) and gradually move to larger scales: at each step, the temperature can be increased, decreased or smoothed by environmental or biological factors. While a one-size-fits-all solution is not feasible for a complex and sensitive issue such as forensic meteorology, this checklist increases the reliability of minimum post-mortem interval (PMImin) estimation and the traceability of the proposed assumption.

Keywords: Calliphoridae; Larval development; Maggot-mass effect; Post-mortem interval; Reliability.

MeSH terms

  • Animals
  • Diptera
  • Entomology*
  • Environment
  • Feeding Behavior*
  • Forensic Sciences*
  • Humans
  • Larva
  • Postmortem Changes*
  • Temperature*
  • Thermogenesis