An experimental field protocol for investigating the postmortem interval using multidisciplinary indicators

Area of Science:

• Forensic Science
• Forensic Entomology
• Forensic Anthropology
• Forensic Pathology

Background:

• Accurate determination of the postmortem interval (PMI) is crucial in forensic investigations.
• Existing methods for PMI estimation can be limited by environmental factors and decompositional variability.
• A multidisciplinary approach is essential for comprehensive PMI analysis.

Purpose of the Study:

• To propose and describe an experimental field protocol for investigating the postmortem interval.
• To detail the design and function of specialized apparatus for data collection.
• To establish a standardized method for multidisciplinary teams in forensic investigations.

Main Methods:

• Utilized specially designed apparatus and both human and pig cadavers in an experimental field setting.
• Employed a dual-functioning insect trap to simultaneously capture arriving and emerging insect populations.
• Collected data on insect succession, soft tissue decomposition, skeletal disarticulation, and environmental influences.

Main Results:

• Presented results of trap performance tests conducted in an arid climate.
• Included preliminary arthropod data obtained from field-exposed pig carcasses.
• Demonstrated the protocol's capability to gather simultaneous data on multiple decompositional fronts.

Conclusions:

• The proposed protocol provides a robust framework for collecting critical baseline data for PMI determination.
• This multidisciplinary approach, integrating entomological, pathological, and anthropological data, enhances PMI accuracy.
• The developed apparatus and methods offer valuable tools for forensic investigators and law enforcement.