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Life Cycle of a Blow Fly
Eggs → Larva 1st Instar → 2nd Instar → 3rd Instar →Pupa
PMI (postmortem interval)
The time between death and the discovery of the body
How does temperature affect PMI?
Temperatures higher than 70 degrees will accelerate or speed up the development process, while lower temperatures will cause it to slow down
How does ecology affect PMI?
It can be helpful in determining the rate at which decomposition occurs in a corpse.
How does drugs affect PMI?
May accelerate or slow down the time needed for an insect’s life cycle.
How does species succession affect PMI?
Insect species found on a corpse will vary depending on the age
How does wounds affect PMI?
Speeds up decomposition and creates more insect activity
Scientific term for flies
Diptera
Scientific terms for beetles
Coleoptera
What delays bugs from a body?
The body being wrapped in a material, in a closed room, exposed to outside conditions, etc.
How many eggs can be laid?
Up to 300
How much is consumed by a maggot in a week?
Twice its body weight
What do we use for collecting bugs?
a hand net or an insect net
Impressions
Objects or materials that have retained the characteristics of other objects through direct contact.
Types of Impressions
Patent, Latent, and Plastic
2D Impression
This type of impression is documented using photography. Some impressions may be dusted with fingerprint powder to be photographed or lifted with tape. They may also be collected using an electrostatic dust lifting process.
3D Impression
This type of impression can be documented using photography as well as by casting, which involves using dental stone to preserve the dimensional characteristics of the print
Ted Bundy
He was well known for being convicted by the use of bite mark evidence.
Casting Materials
Dental Stone and Plaster
Class Characteristics
Physical qualities shared by a group of ‘like’ items.
Individual Characteristics
physical qualities that are unique to an individual.
How to get foot length in inches
1 foot = 12 inches
Height formula
Shoe Size Formula
Odentology
scientific name for dentist impression
How many teeth does the average adult have?
32 teeth