Investigators will note temperatures of which locations to help PMI estimation?

• A. Air temperature, ground surface temperature, the interface area between the body and the ground, the soil under the body, and the temperature inside maggot masses
• B. Only air temperature
• C. Only body core temperature
• D. Only nighttime temperature

Answer: (A)

PMI estimation through entomology depends on how temperature governs the rate of insect development. Insects feeding on a body experience a microclimate that can differ significantly from the general air temperature. The most informative data come from multiple relevant environments: the air around the body, the ground surface where the body rests, the exact interface where the body contacts the ground (where many larvae concentrate), the soil beneath the body, and the inside of growing maggot masses. Each of these areas can be warmer or cooler than the air and can change over time as decomposition progresses. By collecting temperatures from these sites, investigators can build a more accurate thermal history and apply it to development models, yielding a better estimate of the time since death. Focusing on just one location, like air temperature or only nighttime values, misses these microhabitat variations and can lead to incorrect PMI estimates.