Department of Zoology, Centre for Biological Sciences, Universidade Federal de Pernambuco, Av. Professor Moraes Rego, s/n, Recife, PE, Brazil.
Forensic Sci Int. 2010 May 20;198(1-3):97-102. doi: 10.1016/j.forsciint.2010.01.011. Epub 2010 Feb 23.
Increasing rates of unsolved homicides in Brazil prompt the need for applied entomological data to be used as a complementary tool by criminal investigators. In that context, we analyzed the occurrence of forensically important insect species (Order Diptera) on 14 cadavers taken into the Institute of Legal Medicine (ILM), in Pernambuco, Brazil, according to the conditions of the body and the pattern of colonisation by insects. Simultaneously, we surveyed the diversity of insects in the surrounding environment using bait traps. Five species were present on cadavers: Chrysomya albiceps, Chrysomya megacephala and Cochliomyia macellaria (Calliphoridae), Oxysarcodexia riograndensis and Ravinia belforti (Sarcophagidae). A total of 4689 adult insects belonging to 24 species of seven dipteran families (Calliphoridae, Sarcophagidae, Muscidae, Fanniidae, Phoridae, Anthomyiidae and Stratiomyidae) was collected at the ILM premises. C. albiceps was the most frequent species on the corpses and the most abundant in the traps. Species referred to as of forensic importance, such as Lucilia eximia, Chrysomya putoria, Oxysarcodexia modesta and Ophyra chalcogaster were collected on traps, but not on cadavers. There seems to be a limited colonisation of cadavers at the scene of the death, despite the ubiquity of necrophagous species in the area. The results contribute to differentiate between species that are involved in decomposition and those found in and around the mortuary installations of the ILM, thus providing potential clues about the locality of death and the post-mortem interval.
在巴西，未解决的杀人案件数量不断增加，促使刑事调查人员需要使用应用昆虫学数据作为辅助工具。在这种情况下，我们根据尸体状况和昆虫定殖模式，分析了在巴西伯南布哥州法医学研究所（ILM）采集的 14 具尸体上出现的法医重要昆虫物种（双翅目）。同时，我们使用诱捕器调查了周围环境中昆虫的多样性。有 5 种昆虫存在于尸体上：嗜人按蚊、巨尾阿丽蝇和厩腐蝇（丽蝇科）、Oxysarcodexia riograndensis 和 Ravinia belforti（麻蝇科）。在 ILM 场所共收集到属于 7 个双翅目科（丽蝇科、麻蝇科、蝇科、狂蝇科、花蝇科、粪蝇科和摇蚊科）的 4689 只成年昆虫，共 24 种。嗜人按蚊是尸体上最常见的物种，也是诱捕器中最丰富的物种。在诱捕器上收集到了被认为具有法医学重要性的物种，如丽蝇、巨尾阿丽蝇、Oxysarcodexia modesta 和 Ophyra chalcogaster，但在尸体上没有收集到。尽管该地区存在大量的食腐物种，但尸体在死亡现场的定殖似乎有限。研究结果有助于区分参与分解的物种和在 ILM 的太平间设施内外发现的物种，从而提供有关死亡地点和死后间隔时间的潜在线索。
