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Wrapping and burning are techniques to hide or destroy evidence on human remains. Both may influence the ability for forensically important arthropods, such as blow flies (Diptera: Calliphoridae), to colonize and develop to adulthood on remains. The combined effects of wrapping and burning a body on blow flies has not been examined in the literature, therefore this was examined using two experiments: (1) measuring the potential delays in oviposition due to wrapped remains and (2) the survival of blow fly larvae on wrapped bodies exposed to flame impingement. First, three domestic pig carcasses were wrapped in 100% polyester blankets and sealed at the end with duct tape, while three remained un-wrapped. After three days of exposure to natural colonization, blow flies delayed oviposition by at least 21 h on the wrapped remains. Second, six pig carcasses were colonized with 250 first instar  Lucilia sericata  (Meigen). Three of these carcasses were wrapped as described in the first experiment. Larvae were allowed three days of feeding and development, then the pigs were transferred to a rural, two-storey farmhouse, which was set ablaze. The local fire department suppressed the fire and removed the pigs. Compared to un-wrapped carcasses, wrapping increased survival of live larvae and recoverability of live and dead larvae. The blanket acted as an extra layer of protection, increasing maggot survival, however, live insect evidence collected and reared post-burn provided a less accurate minimum post-mortem interval estimate than maggots killed by the fire.

Flame impingement affects survival and development of Lucilia sericata (Diptera: Calliphoridae) on securely wrapped remains