Terms in this set (30)
Grave wax- yellow substance due to saponification (fat->wax)
Accumulated degree hours
Measurement of the thermal input required for the growth and development of insects
Cooling rate of body after death
Temperature in room or temp surrounding body/object
Co2 builds up, changes pH, enzymes dissolve the cells causing them to leak fluid and form blisters
Use of insects and other arthropods to aid in investigation
Stage of development for arthropods between moults
Purple, red marks on body indicate pooling of blood due to gravity after blood stops pumping through body
Insect that eats dead matter
Post mortem interval
Associates to TOD
The hardened last larval skin that encloses the pupa in
The process of decay or rotting in a body or other organic matter
Stiffness of muscles that occur shortly after death
Why are maggots of different ages found on the body and different species?
Some species arrive later than others or have faster life cycles
What is decomposition rate of body under water and underground?
2x as fast underwater and half as fast underground
Where are first places a fly will lay it's eggs?
At the wounds or body openings
Why is it important to determine TOD?
Can eliminate possible suspects and to see if the body has been moved
Why must FE bring back larvae to the lab and grow them?
To determine the species and determine your own ADH
What factors affect life cycles of flies?
Any kind of weather, temperature, clothing, drugs
What is the reason for testing maggots for drugs?
Many times tissue is gone because maggots have eaten it
When is rigor mortis untraceable?
Non traceable 36 hours after death
What color of the body is indicated by putrefaction?
The body takes on a green tinge
When does livor mortis begin to occur?
1/2 an hour after death
What factors draw necrophages to a corpse?
Blood, or smell of decomp
What is indicated if maggots are in a certain area like the back or arms?
How can drugs affect PMI?
Speed or slow down life cycle or how body decomposes
Stages of death
Algor mortis, livor mortis, rigor mortis, decomposition
When is livor mortis most evident?
Most visible at 12 hours after TOD
For what is the Glastier equation used?
Determine death up to 36 hours after death
What factors can affect insect colonization?
Location, temperature, weather