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General SOP for Forensic Entomology -Working in Death Scenes-

Posted in Forensic Entomology & DNA Barcoding by paibiopai on October 9, 2009
This is how we work on death scenes collecting forensic entomology evidence..
just click here to see the rest..
Assess and note general visual scene characteristics
Observe and note insect infestations at the scene :
Use “Forensic Entomology Data Form”
Note insect activity within 3-6 m (flying, resting, crawling)
Approximate number and kinds of insects present
Note locations of major infestations
Note immature stages observed, feeding marks, exit holes, closed or unclosed pupal cases
Exact position of body and extremities, compass direction, parts in contact with substrate, exposure to sunlight and shade, etc.
Note alterations that could modify decomposition (trauma, burial, movement, burning, enclosure, dismemberment, etc)
Initiate meteorological data collection
Ambient air temperature (30 cm, 1.5 m high from body)
Ground surface temperature
Body Stiffness
Upper body surface temperature
Under body temperature
Maggot mass temperature
Soil temperature (immediately after body removal)
Collect adult flies & beetles, eggs, larvae and pupae :
Use an aerial sweep net body and vegetation
Pick up ground crawling insects and store
Preserve most specimens : (see ms. word documents)
Rear specimens for identification
First and second instar blow fly larvae are generally not identifiable to species
Core location: Nasal openings, Corners of eyes, Mouth, Traumatized areas
Disturbances
If body has not been bagged, do not disturb anything.
Only collect insects visible on the surface
Do not move/remove clothing
Collect specimens under and close to body (0-1 m) after body has been removed :
Litter (leaves, bark, humus, etc)
Soil samples (several 10 cm cores) along body depression and near to body
Collection of insects during autopsy
Examine body bag
Examine clothes

Picture1

Assess and note general visual scene characteristics
Observe and note insect infestations at the scene :
Use “Forensic Entomology Data Form”
Note insect activity within 3-6 m (flying, resting, crawling)
Approximate number and kinds of insects present
Note locations of major infestations
Note immature stages observed, feeding marks, exit holes, closed or unclosed pupal cases
Exact position of body and extremities, compass direction, parts in contact with substrate, exposure to sunlight and shade, etc.
Note alterations that could modify decomposition (trauma, burial, movement, burning, enclosure, dismemberment, etc)

One Response

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  1. pir asmat ali .M.Phil scholor said, on April 1, 2010 at 2:05 pm

    DEAR SIR/MADAM
    I am a M.Phil zoology(entomology) student. i want to do researh in forensic entomology here in pakistan.kindly give me help in my reseach.i will be the first student in Pakistan to do researh in this field


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