Determining the Time of Death
- Created by: Yzyl Quintana
- Created on: 06-02-17 23:01
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- Determining Time of Death
- Body temperature
- Body cools as respiration declines
- Measured via the rectum/abdominal stab
- Temperature decline per hour can be used to give an estimate of T o D
- Rigor mortis
- Decomposition
- Average conditions
- Putrefaction - 36-72 hrs
- Gas formation - 1 wk
- Decomposers
- Bacteria from the gut quickly invade the tissues
- Bacteria & Fungi from the surroundings
- Average conditions
- Forensic entomology
- Entomologists record info on...
- Location of the body
- Condition of the body
- Temperature of the: air, ground and body
- Temperature history established from...
- Local meteorological records
- Local weather can be set up at the site: Temp readings then correlated with the nearest weather station readings
- More ACCURATE
- Temperature history established from...
- Samples of any insects found, noting exactly where and when they were found
- F. entomologists use the predictable sequence of organisms that feed on a decomposing body to determine T o D
- Can be used after finding the body several days after it has been killed
- E.g. Assess the life cycle stages of insects (fly/beetle)
- There are different stages of decomposition
- Detail: production of gases, bloating, discolouration
- Rate of either insect development/decomposition influenced by external factors
- Insect and decomposition info is used to determine T o D
- Entomologists record info on...
- Age of Maggots
- Body temperature
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