A body has been lying outdoors for an estimated 4 days based on ambient temperature data and accumulated degree day calculations for its blowfly larvae. Later analysis suggests the true interval is shorter. Which phenomenon best explains this discrepancy?

• A Consumption of the larvae by predatory beetles
• B Cooling of the corpse below ambient temperature slowing larval growth
• C Diapause induced by daylight length in adult flies
• D Metabolic heat generated by aggregated maggot masses raising local larval temperature above ambient ✓

Explanation

Aggregated feeding larvae generate substantial metabolic heat, and maggot masses can raise local temperatures well above ambient, accelerating development. Development models driven by ambient temperatures then predict slower growth than actually occurred, so the calculated interval exceeds the true interval. Diapause and predation affect estimates differently, and corpses rarely cool persistently below ambient in summer.

Reference: Knight's Forensic Pathology, 4th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.