Mądra-Bielewicz Anna, Frątczak-Łagiewska Katarzyna, Matuszewski Szymon
Laboratory of Criminalistics, Adam Mickiewicz University, Św. Marcin 90, Poznań, 61-809, Poland.
Department of Animal Taxonomy and Ecology, Adam Mickiewicz University, Umultowska 89, Poznań, 61-614, Poland.
J Forensic Sci. 2017 Sep;62(5):1229-1233. doi: 10.1111/1556-4029.13376. Epub 2016 Dec 28.
The estimation of postmortem interval (PMI) based on successional patterns of adult insects is largely limited, due to the lack of potential PMI markers. Sex and size of adult insects could be easily used for such estimation. In this study, sex- and size-related patterns of carrion attendance by adult insects were analyzed in Necrodes littoralis (Coleoptera: Silphidae) and Creophilus maxillosus (Coleoptera: Staphylinidae). For both species, abundance of males and females changed similarly during decomposition. A slightly female-biased sex ratio was recorded in N. littoralis. Females of N. littoralis started visiting carcasses, on average, one day earlier than males. There was a rise in size of males of N. littoralis at the end of decomposition, whereas for females of both species and males of C. maxillosus, no size-related patterns of carrion visitation were found. Current results demonstrate that size and sex of adult carrion beetles are poor indicators of PMI.
由于缺乏潜在的死后间隔（PMI）标志物，基于成年昆虫演替模式来估计死后间隔在很大程度上受到限制。成年昆虫的性别和大小可轻易用于此类估计。在本研究中，对海滨葬甲（鞘翅目：埋葬甲科）和大隐翅虫（鞘翅目：隐翅虫科）成年昆虫与尸体接触的性别和大小相关模式进行了分析。对于这两个物种，在分解过程中雄性和雌性的数量变化相似。在海滨葬甲中记录到略微偏向雌性的性别比例。海滨葬甲的雌性开始访尸的时间平均比雄性早一天。在分解末期，海滨葬甲雄性的大小有所增加，而对于两个物种的雌性和大隐翅虫的雄性，未发现与尸体访视相关的大小模式。当前结果表明，成年葬甲的大小和性别是较差的死后间隔指示指标。
