Jarmusz Mateusz, Bajerlein Daria
Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland.
Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland.
Forensic Sci Int. 2019 Jul;300:32-42. doi: 10.1016/j.forsciint.2019.04.013. Epub 2019 Apr 20.
We present the results of the first study on the decomposition of hanging carcasses in a forest habitat of Poland. The decomposition of 12 hanging pigs and 12 ground pigs, which were used as control, in spring, summer, and autumn was examined during a two-year study. Mosaic decomposition was observed with bloating, active decay, and advanced decay irrespective of the carrion treatment (hanging vs ground). Bloating was less visible or did not occur at all in hanging pigs. After undergoing advanced decay, carcasses became mummified and remained in the hanging position. Complete skeletonization was observed only within the head in one case in summer. Irrespective of the carrion treatment, the active decay was driven by the same blow fly species with a similar seasonal pattern of larval dominance. The season was found to affect the decomposition of the hanging carcasses as revealed by a distinct delay in the onset of bloating in autumn and the late onset of active decay in spring. The duration of active decay was the shortest in summer and the longest in autumn. The effect of carrion treatment on the rate of decomposition was statistically insignificant. Nevertheless, some differences in the duration of decomposition between hanging and ground pigs were observed. The most distinct difference was that earlier decomposition proceeded faster in hanging pigs in spring and a delayed decomposition was observed in autumn. In summer, decomposition was similar in all the carcasses. The presented results are largely in contrast to the findings of previous studies on decomposition of hanging pig carrion.
我们展示了在波兰森林栖息地对悬挂尸体分解情况进行的首次研究结果。在一项为期两年的研究中，对12头悬挂猪和12头作为对照的地面猪在春季、夏季和秋季的分解情况进行了检查。无论腐肉处理方式（悬挂还是地面放置）如何，均观察到了包括肿胀、活跃腐烂和高度腐烂阶段的镶嵌式分解过程。悬挂猪的肿胀现象不太明显或根本未出现。经过高度腐烂后，尸体变成干尸并保持悬挂状态。仅在夏季的一个案例中，头部出现了完全骨骼化的情况。无论腐肉处理方式如何，活跃腐烂阶段均由相同的丽蝇种类主导，且幼虫优势的季节性模式相似。研究发现季节会影响悬挂尸体的分解，秋季肿胀开始明显延迟，春季活跃腐烂开始较晚。活跃腐烂阶段的持续时间在夏季最短，在秋季最长。腐肉处理方式对分解速率的影响在统计学上不显著。然而，观察到悬挂猪和地面猪在分解持续时间上存在一些差异。最明显的差异是，春季悬挂猪的早期分解进程更快，秋季则观察到分解延迟。夏季，所有尸体的分解情况相似。所呈现的结果与先前关于悬挂猪腐肉分解的研究结果在很大程度上形成了对比。
