柔佛州包裹和未包裹的兔子尸体上的尸食性苍蝇的组成和生命周期,用于法医应用

N. Mahat, Nur Najwa Zulkifili, Mohamad Afiq Mohamed Huri, A. Azman
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引用次数: 0

摘要

在法医案件中,尸体经常被发现包裹在一些材料中,可能是作为伪装的手段,以及便于处理和防止证据转移。这种包裹材料的使用可能会影响昆虫的定植模式,从而导致对死后间隔(PMI)的错误估计。因此,本研究利用两面打开的旧地毯包裹的兔子尸体,为马来西亚柔佛州的尸食性蝇的物种组成和生命周期完成提供了经验数据。结果显示,包裹和未包裹的兔尸体在物种组成上没有差异。在3个重复实验中,所有被包裹和未被包裹的分解兔尸体中均发现了6种噬尸蝇,即大头金蝇(Chrysomya megacephala)、金蝇(Chrysomya rufifacies)、tagaliana半圆蝇(Hemipyrellia tagaliana)、chalcogaster金蝇(Ophyra spinigera)和身份不明的麻蝇(Sarcophagidae)。虽然在30天的观察期内没有观察到麻蝇科的生命周期完成,但在本研究所检查的所有尸体中,其余五种即巨头棘蝇(7.66-7.91天)、棘蝇(8.33-8.50天)、tagaliana棘蝇(~14天)、chalcogaster棘蝇(~15天)和棘蝇(~16天)的生命周期完成明显相似。由于柔佛的法医昆虫学基线数据尚未报道,因此本文的结果可能有助于通过昆虫学评估估计该地区或类似生物地理气候条件下的最小PMI。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Composition and life cycles of necrophagous flies infesting wrapped and unwrapped rabbit carcasses in Johor for forensic applications
In forensic cases, corpses are frequently discovered wrapped in some material, probably as a means for disguising, as well as enabling easier handling and preventing evidence transfer. The use of such wrapping materials may affect insect colonization patterns, which in turn causing erroneous estimation of post-mortem interval (PMI). Hence, this present study utilized rabbit carcasses wrapped in a used rug with both sides remained open provided empirical data on species composition and completion of life cycles of necrophagous flies infesting in Johor, Malaysia. Result does not revealed differences in species composition between the wrapped and unwrapped rabbit carcasses. Six necrophagous fly species (viz. Chrysomya megacephala, Chrysomya rufifacies, Hemipyrellia tagaliana, Ophyra chalcogaster, Ophyra spinigera and unidentified Sarcophagidae) were consistently observed in all the decomposing wrapped and unwrapped rabbit carcasses during the three replicate experiments. While completion of life cycle for Sarcophagidae was not observed during the 30 days period of observation, completion of life cycles for the remaining five species i.e. C. megacephala (7.66-7.91 days), C. rufifacies (8.33-8.50 days), H. tagaliana (~14 days), O. chalcogaster (~15 days) and O. spinigera (~16 days) were observably similar in all the carcasses examined in this present study. Since forensic entomological baseline data for Johor on oviposition and completion of life cycle for these necrophagous flies remain unreported, the results reported here may prove useful for estimating minimum PMI via entomological assessment within this region or within the similar biogeoclimatic conditions.
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