08-05_task (2)

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University of Alabama *

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CALCULUS

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Biology

Date

Jan 9, 2024

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docx

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4

Uploaded by ProfessorWren5558

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8.05 Crime Scene Critters (50 Points) Complete the following lab report using the lab linked on the Tasks page. Background (2 points each) 1. What role are you serving in this investigation? forensic entomologist 2. Describe the crime scene. The house smells strongly of human decay, A and there is overturned furniture and broken dishes showing a violent occurred. Two bodies were discovered one near the kitchen and the other lying in a corner near the window. Blood covered the walls and floor around it. 3. Define postmortem interval. Period between the time of death and when the body is first discovered 4. What evidence will you use to determine the PMI? Insects Species A Complete the table below with information on Species A. For the development time, list the range of hours for a specimen in that stage. One row has been partially completed as an example. Look on the Insect Life Cycle slide for information on size / length. (9 points—0.5 point per cell) Stage Development time (in hours) Length / Size (in mm) Observations egg 0 -24 3 B oth ends are roughly the same shape. Difficult to distinguish between the two. 1 st instar 25-52 2-4 T he anterior end is slightly more pointed than the posterior end. © ACCESS Virtual Learning 2021
Stage Development time (in hours) Length / Size (in mm) Observations 2 nd instar 5 3-78 5 -8 The anterior is more tapered and the hook- like mouth parts appear. The posterior is wider 3 rd instar 79-128 10-15 Like 2nd instar but the hook-like mouth parts and posterior projections are more. prominent. migrating 3 rd instar 129-246 10-15 Same as 3 rd instar pupa 247-486 8-12 Shaped like the egg except it is larger and darker in color. adult 486-Death NA Develops wings, eyes, and legs and is now an insect Species B Complete the table below with information on Species B. For the development time, list the range of hours for a specimen in that stage. One row has been partially completed as an example. Look on the Insect Life Cycle slide for information on size / length. (9 points – 0.5 point per cell) Stage Development time (in hours) Length / Size (in mm) Observations egg 0-25 1-3 mm Both ends are roughly the same shape. Difficult to distinguish between the two © ACCESS Virtual Learning 2021
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