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40 terms

Forensic Entomology Terms

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Change in temperature after death, Most useful indicator of the time of death during first 24 hours
Algor Mortis
Settling of blood in the body gives off a bluish-purple color
Livor Mortis
stiffening of the muscles after death
Rigor Mortis
Tissue breakdown the body's own internal chemicals and enzymes
autolysis
The breakdown of tissues by bacteria. These processes release gases that are the chief source of the characteristic odor of dead bodies
Putrefaction
Dehydration or desiccation of tissues
Mummification
using degree day models and life history information
Post Mortem Interval
A scientist who uses insects to help solve crime
Forensic Entomologist
The cadaver appears fresh externally but is decomposing internally due to the activities of bacteria, protozoa and nematodes present in the body before death
Intial Decay
The cadaver swollen by gas produces internally, accompanied by odor of decaying flesh
Putrefaction Decay
Flesh of creamy consistence with exposed parts black. Body collapse as gases escapes. Odor of decay very strong
Black Putrefaction
Cadaver drying out, some flesh remains at first and cheesy odor develops, neutral surface moldy from fermentation
Butyric Fermentation
Cadaver almost dry, slow rate of decay
Dry Decay
flesh flies Adults lay larvae on decaying flesh Some of the first insect to reach a corpse
Sacrophagidae
solider flies Larvae feed on human excrement and remains Are found late in decomposition process
Strateomyidae
humpback flies Larvae feed on decaying bodies Some species can burrow to a depth of 50cm over four days Important in buried bodies
Phoridae
carrion beetles Buries small carcasses Adults feed on maggots and carrion
Silphidae
rove beetles Arrive a few hours after a death Are active throughout decomposition process
Staphylinidae
carpet beetles Larvae and adults feed on dry skin and hairs
Dermestids
hister beetles Found in bloated, decay, and early drying stages Both larvae and adults feed on maggots and puparia
Histeridae
blow flies Different species have different habitats - light vs. dark
Calliphoridae
the disease process or injury responsible for initaiting the train of events which produces death
Cause of death
the physiological and biochemical derangement produced by the above cause
Mechanism of death
the fashion in which the cause of death came into being
Manner of death
Appointed by local or state offical; serves continously; medical degree
Medical Examiner
elected by political offical, 2-4 years in office, no medical training
Coroner
head, thorax, abdomen, six legs, and wings
Parts of the adult fly
anterior posterior slits where larva breathe through
Spiracles
flesh flies (sacrophadigdae)
First Insect to Arrive
temperature, access by inescts, burial, burial depth, access of animals, humdity, dryness, rainfall, body size, clothing, surface the body rest on, and trauma
Influences rate of decomposition
1.5 degree Celsius per hour
Rate of temperature decrease in 24hr
Temperature*hour
ADH ATB
Scene: collect the maximum of info with teh mini disturbance History: collected Medico-legal autopsy
Death Investigation
social, medical-legal, and psychiatric
History Taken
Pig
Animal used in research
Blowf Fly Screw Worm Fly
Fresh
Hairy Maggot Fly House Fly
Bloated
Rove's Beetle Carrion Beetles
Active Decay
Checkered Beetles Cheese Fly
Advanced Decay
Pinic Beetle Dermestid Beetle
Dried Remarks