Determining Time of Death - Forensic Entomology
- Created by: Sdarby
- Created on: 01-11-16 17:43
View mindmap
- Forensic Entomology
- Forensic Entomology
- Presence of insects allows an estimate to be made on the time elapsed since death and if the body has been moved
- May be a species found that is not in its natural habitat (location)
- Record information about the location and condition of the body
- Take samples of insects found on, near or around the body noting where and when they were found
- Some maggots and insects are killed at time of collection and some taken alive
- Live maggots are fed on meat to allow a complete development
- Temperature of the air, ground, body and maggot mass are measured to help determine maggot development stage
- Presence of insects allows an estimate to be made on the time elapsed since death and if the body has been moved
- Estimating Time Since Death
- Determine age of maggots and estimate time when eggs were laid
- Succession On Corpses
- As one group of organisms feed ? conditions of the decomposing body changes and becomes attractive to other organisms ? repeats until only skeleton remains
- Use predictable sequences of organisms that feed on decomposing bodies to determine the time of death
- Season, weather conditions, size and location of body all have an effect on the estimation
- Other Organisms
- Bacteria from the gut quickly invade the tissues after death
- Other bacteria and fungi from the surroundings colonise the corpse ? contributes to decay and the changing conditions of the body
- Corpse is a great source of energy
- Organic carbohydrates proteins, fats and nucleic acids
- Enables bacteria and fungi to grown and multiply rapidly ? speeds up decay process
- Release carbon dioxide into atmosphere - can be used by plants for photosynthes
- Forensic Entomology
Similar Biology resources:
Teacher recommended
Comments
No comments have yet been made