ARCL 228 Lecture Notes - Lecture 8: Forensic Biology, Calliphoridae, Histeridae
29 Sep 2016
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Forensic anthropology - arcl sept 28 - estimating time since death forensic entomology. 7 natural openings in the skin: 1. mouth, 2. nose, 3. ears, 4. eyes, 5. anus, 6. urethra, 7. vagina, unnatural: gun shot wounds or other wounds insect succession. Flies: first wave - first couple hours + start to lay eggs. Takes 143 hours to make an adult fly. Beetles: second wave (after the fresh that has dried up/mummafied: 1. carrion (feeding off of dead tissue) beetles: silphids, hister beetles, sap beetles, rove beetles, 2. hide beetles, ham beetles, 3. scarab beetles, 4. carcass beetles. Maggots: secrete antibiotic substance, eating dead tissue, help prevent infection bc. Ants and roaches also eat the body. Bird come to collect hair for their nest estimating time since death. 1. collect samples of the insects present. (pupil casing, flies, maggots) 2. determine temperature history at crime scene. (weather data, temperature charts) 4. what other insect evidence available? forensic botany.
