In forensic entomology, the concept of 'accumulated degree days' (ADD) is used primarily to:

• A Estimate the number of insect species present on a decomposing body
• B Standardise insect development rates across different ambient temperatures to improve PMI estimation ✓
• C Calculate the caloric value of the decomposing body available to insects
• D Predict which succession wave of insects will colonise the body next

Explanation

Accumulated degree days (ADD, also called growing degree days) accounts for the fact that insect development is temperature-dependent. By summing the degree-days above the base threshold temperature for each day, investigators can compare insect development across sites with different temperatures and seasons. This standardisation allows more accurate PMI estimation than using calendar time alone.

Reference: The Essentials of Forensic Medicine and Toxicology (Narayan Reddy), 34th ed.

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Written and medically reviewed by the StethoPrep medical team.