forensic entomology an introduction biol450 t0ylojabghss1fcv5jewg2zyw
TRANSCRIPT
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Forensic Entomology
An IntroductionBiol450
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An Introduction to Forensic Entomology
• What is forensic entomology?• What are the stages of decomposition?• What are some of the key players?
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What is forensic entomology?
• Forensic entomology is the use of insects, or arthropods, to investigate legal cases.
• Can involve both human and wildlife cases• Cases can be related to untimely deaths, neglect, and foul
play• Can help pinpoint time of death, and location• Can also be associated with grain industry and food cases
http://natagri.ufs.ac.za/dl/userfiles/Images/00003/2123_eng.jpg
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What are the stages of decomposition?
• 5 stages:– Fresh– Bloat– Active Decay– Advanced Decay– Dry/Skeletal
• Stages of Colonization– Allows for time of death calculations – Post mortem intervals (PMI)
http://www.nhm.ac.uk/resources/research-curation/consulting/flash-image-faders/forensic-entomology/images/calliphora-larvae.jpg
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Colonization
Blowflies
Flesh flies
Predaceous flies
Rove beetles
Carrion Beetles
Carpet Beetles
Lepidoptera
TimeCourtesy of Nancy Ostiguy
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Mel Bishop 2007
Blow flies
Predatory flies
Rove Beetles
Carrion beetles
Carpet beetles
Clothes mothsFlesh fliesCourtesy of Dr Ke Chung Kim
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Eggs…
Courtesy of Dr Ke Chung Kim
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Young maggots
Courtesy of Dr Ke Chung Kim
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Older maggots
Courtesy of Dr Ke Chung Kim
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Maggot mass
Courtesy of Dr Ke Chung Kim
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Field Studies• Collection and analysis from field
Courtesy of Dr Ke Chung Kim
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Collection
http://www.itsgov.com/wp-content/uploads/2012/09/forensic-entomology.jpg
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Summary
• Forensic Entomology• Decomposition• Colonization• Future Classes
• Forensic Science majorhttp://www.forensics.psu.edu/