Effects of malathion on the insect succession and the development of Chrysomya megacephala (Diptera: Calliphoridae) in the field and implications for estimating postmortem interval

The American Journal of Forensic Medicine and Pathology
Shi Yan-WeiZhang Run-Jie

Abstract

A field study on the effects of malathion on insect succession and the development of carrion flies on corpses, and its quantitative determination from the larvae on decomposing rabbit carrion was conducted. The rabbits were treated with malathion at concentrations of lethal, half-lethal and fourth-lethal doses. Malathion altered decomposition rates and species diversity: Chrysomya megacephala (Diptera: Calliphoridae) was the most abundant adult species in all the experiments; third instar larvae of Chrysomya rufifacies (Diptera: Calliphoridae) were not found on the toxic carcasses but were collected from the control; the appearance of beetles on the treated carcass was later by 1 to 3 days than on the control carcass. Development rate of the dominated species C. megacephala larvae and pupae was observed. Stepwise increases in the period of larval development, the maximum length of larvae, and weight of pupae were observed with increasing malathion concentrations. However, there was no significant difference in the duration of the pupal stage. The differences in development rate were sufficient to alter postmortem interval estimates based on larval development by 12 to 36 hours. The time of finding fresh pupae from the fourth-l...Continue Reading

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Citations

May 8, 2013·Forensic Science International : Synergy·Stephanie T YoungClifton P Bishop
May 9, 2014·Micron : the International Research and Review Journal for Microscopy·Raquel López-EsclapezNicolás Ubero-Pascal
Sep 25, 2012·Forensic Science International : Synergy·Katherine BrownMichelle Harvey
Oct 28, 2011·Forensic Science International : Synergy·Eline M J SchotsmansAndrew S Wilson
Aug 3, 2016·Veterinary Pathology·A Brundage, J H Byrd
Dec 13, 2016·Forensic Sciences Research·Chengzhi LiZhenyuan Wang
Feb 23, 2021·Saudi Journal of Biological Sciences·Fahd Mohammed Abd Al GalilLamya Ahmed Al-Keridis
Apr 4, 2021·Insects·Yu WangJiangfeng Wang

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