Forensic Entomology Bud and Patti Bertino. Forensic Entomology is based on: Insect life cycles Knowledge of length of stage of development Predatory food.

Slides:

Advertisements

Similar presentations

T. Trimpe Forensic Entomology Unit Review T. Trimpe

Advertisements

Forensic Entomology Insects as Evidence

Forensic Entomology (Part II). Maggot Crop Analysis.

Forensic Entomology Insects as Evidence

Forensic Entomology Ch 9 Pgs

Forensic Entomology 1. 2 You will understand: The stages of death. The role insects play in the decomposition of carrion. Postmortem interval and how.

Forensic Entomology.

Forensic Entomology a word derived from the Greek words entomon (an insect) and logos (science).

Forensic Entomology Notes on page 79. What is Forensic Entomology?  Applying the study of insect life cycle to estimating time of death  Flies and beetles.

FORENSIC ENTOMOLOGY MUSA. A. ALI. A. GINDEEL. (BSC.MSC STUDENT)

Forensic Entomology The study of insects associated with a dead body Common Maggot species.

Estimating Post Mortem Interval (PMI)

Forensic Entomology 1. 2 You will understand: The stages of death. The role insects play in the decomposition of carrion. Postmortem interval and how.

Insects in Forensic Science How bugs Tell Time. History Sung Tz’u. 洗冤集錄 ( The Washing Away of Wrongs): 洗冤集錄 This was the first forensic case ever reported.

Warning: Some material in this presentation and related videos may be too graphic for some people.

Determining the manner and time of death Unit 2. Carl linnaeus Developed TAXONOMY SYSTEM – Classification of things in an orderly way that indicates natural.

T. Trimpe Warning: Some material in this presentation and related videos may be too graphic for some people.

Warning: Some material in this presentation and related videos may be too graphic for some people.

T. Trimpe Presentation developed for use with the Crime Solving Insects activity available at

Entomology is the branch of zoology concerned with the study of insects.

T. Trimpe Warning: Some material in this presentation and related videos may be too graphic for some people.

Ch. 13 Entomology.

Forensic Entomology STEM.

Forensic Entomology Unit 2 Section 2. Forensic Entomology The study of insects and their relation to a criminal investigation. Used to estimate time of.

E NTOMOLOGY. A part from bacteria and fungi, insects are the most important processors of dead animal and human remains Insects utilize decomposing tissues.

Forensic Science Unit 4 Entomology. What is Forensic Entomology? Entomology is the study of insects. Insects arrive at a decomposing body in a particular.

Forensic Entomology Study of insects and their relation to legal issues.

Copyright © 2013 Crosscutting Concepts, LLC. All Rights Reserved. Forensic Entomology.

Flesh Fly (Sarcophagidae) S triped thorax Blow & Greenbottle Flies (Calliphoridae) Metallic thorax and abdomen Early Stage Decomposition Late.

Forensic Entomology What bugs can tell us about the dead…….

T. Trimpe Warning: Some material in this presentation and related videos may be too graphic for some people.

Ch. 13 Entomology. Taxonomy Classification of Things in an Orderly Way.

Forensic Entomology.

Forensic Entomology Insects as Evidence

Forensic Entomology.

Forensic Entomology Insects as Evidence

All rights Reserved Cengage/NGL/South-Western © 2016.

Forensic Entomology Insects as evidence.

Forensic Entomology Insects as Evidence

Estimating T.O.D..

Forensic Entomology Insects as Evidence

Body Decomposition Watch me! April

Forensic Entomology Insects as Evidence

Bellringer: What are three types of material that can be found in soil? Why is soil analysis important in forensic science?

Decomposition Begins at the moment of death, caused by two factors

Forensic Entomology Insects as Evidence

How do forensic investigators determine time of death?

Nature’s Witness Forensic Entomology.

Forensic Entomology Insects as Evidence

Warm Up Think back to the episode of crime 360 that featured the body found in the sewer. What did scientists do/use to figure out how long the body had.

T. Trimpe Forensic Entomology Unit Review T. Trimpe

Collecting & Preserving Evidence (Obj 12.6, 12.7, 12.8)

Forensic Entomology Insects as Evidence

Forensic Entomology Applies the study of insects (arthropods) to legal issues.

Time of death Jan 2019.

Information taken from

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Chapter 12 Forensic Entomology

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Time of death Jan 2019.

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Entomology Chapter 12.

Forensic Entomology Insects as Evidence

Forensic Entomology Insects as Evidence

Presentation transcript:

Forensic Entomology Bud and Patti Bertino

Forensic Entomology is based on: Insect life cycles Knowledge of length of stage of development Predatory food chain on corpse Gases produced by decomposing bodies draw insects, not blood These gases are carbon dioxide, methane, ammonia and nitrogen

A first ‘ wave ’ of insects Usually blow arrive first laying eggs on soft tissue lining body openings on corpse In 1-2 days, eggs hatch and maggots feed on corpse (1 st instar stage)

Maggots mature through 3 instar stages before forming a cocoon (pupa stage) About a week later, adult flies emerge

What might effect the accuracy of the time sequence of the life cycle of the blow fly?

Blow fly arrives in less than one minute

Various Types of Maggots

Life Cycle of the Flesh Fly

Second wave could include: Beetles or other insects who feed on blow flies and have a life cycle of their own The corpse may really be the origin of a food chain. How does a food chain work?

How would each of these factors affect time of death estimations? Burial Immersion in water Mummification Geographic location

Temperature & Humidity Light & Shade Season Length of day Manner of death (Poisons may slow down decomposition)

Time to get to work!

Forensic examination kit

Project ideas: 1.Study the life cycle of a blow fly and determine the timeline used by forensic scientists. 2.Obtain some liver and grow your own ‘ time line ’. 3.Search the internet for crimes that were solved through the use of forensic entomology.