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Delayed reception of live blowfly (Calliphora vicina and Chrysomya rufifacies)larval samples: implications for minimum postmortem interval estimates

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forensic Sciences Research 2018年第1期3卷 27-39页

作者： Melanie S.Archer Stephanie D.Jones james f.wallman Department of forensic Medicine Monash University/Victorian Institute of Forensic MedicineSouthbankAustralia Centre for Sustainable Ecosystem Solutions School of Biological SciencesUniversity of WollongongWollongongAustralia

forensic entomology evidence collected by police and mortuary staff may be delayed in getting to the *** samples may continue developing and alter minimum postmortem interval (PMImin) *** study investigated development of simulated evidential samples of Calliphora vicina Robineau-Desvoidy and Chrysomya rufifacies (Macquart) (Diptera: Calliphoridae) *** of each species were studied in three developmental classes: "small" (late second/early third instar),"mid" (mid third instar) and "large" (late third instar).Seven replicates of 11 maggots in each class were assigned without food to four treatments: (1) 24 h at 20 ℃;(2) 24 h at 4 ℃;(3) 48 h at 20 ℃ and (4) 48 h at 4 ℃.There was a significant difference in absolute length change across treatments,reflecting size for C vicina,and interaction between size,time and temperature for *** vicina maggots showed minimal mortality,and most second instar larvae moulted by the experiment's *** rufifacies showed heavy mortality and minimal moulting from the second to third *** "large" *** maggots kept at room temperature for 48 h *** these results confirm that development can continue in live unfed maggot samples after their collection,it is not advisable to delay their preservation.

关键词： forensic science forensic entomology forensic evidence larval development best practice sampling

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