Occurrence of Poecilochirus austroasiaticus (Acari: Parasitidae) in forensic autopsies and its application on postmortem interval estimation
Occurrence of Poecilochirus austroasiaticus (Acari: Parasitidae) in forensic autopsies and its application on postmortem interval estimation
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DOI：
10.1007/s10493-012-9606-1
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发表时间：
2013-03-01
影响因子：
2.2
通讯作者：
Jimenez Rios, Gilberto
中科院分区：
文献类型：
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作者：
Gonzalez Medina, Alejandro;Gonzalez Herrera, Lucas;Jimenez Rios, Gilberto
尽管在法医昆虫学兴起之初就使用螨来阐明死后间隔，但由于分类学知识不足等程序原因，它们在当前案例中的使用仍然相当低。人们对某些螨类的泳动阶段特别感兴趣，因为响体宿主特异性使我们能够在许多情况下推断出载体（通常是双翅目或鞘翅目）的存在，尽管在原位或尸检室进行的采样中尚未发现。在本文中，我们描述了在尸检室对 Poecilochirus austroasiaticus Vitzthum（螨虫：寄生虫科）进行采样的两个案例。在第一种情况下，我们可以对宿主 Thanatophilus ruficornis (Kuster)（鞘翅目：丝螨科）进行采样，它的身上仍然携带着螨虫的游动阶段。通过观察饥饿/进食时间作为消化道填充的函数，该附件允许建立泳动行为的时间周期，显示到达和离开尸体期间的声波最大峰值以及宿主进食阶段的最低值。从肉食性动物群中，我们能够确定本例中的最小尸检间隔为 10 天。在第二个案例中，我们在尸体发现地或尸检时没有发现丝虫科动物，但由于这种种间关系的高度特异性以及与该鞘翅目科尸体的分离，可以确定13天的尸检间隔。
Despite the fact that mites were used at the dawn of forensic entomology to elucidate the postmortem interval, their use in current cases remains quite low for procedural reasons such as inadequate taxonomic knowledge. A special interest is focused on the phoretic stages of some mite species, because the phoront-host specificity allows us to deduce in many occasions the presence of the carrier (usually Diptera or Coleoptera) although it has not been seen in the sampling performed in situ or in the autopsy room. In this article, we describe two cases where Poecilochirus austroasiaticus Vitzthum (Acari: Parasitidae) was sampled in the autopsy room. In the first case, we could sample the host, Thanatophilus ruficornis (Kuster) (Coleoptera: Silphidae), which was still carrying phoretic stages of the mite on the body. That attachment allowed, by observing starvation/feeding periods as a function of the digestive tract filling, the establishment of chronological cycles of phoretic behavior, showing maximum peaks of phoronts during arrival and departure from the corpse and the lowest values in the phase of host feeding. From the sarcosaprophagous fauna, we were able to determine in this case a minimum postmortem interval of 10 days. In the second case, we found no Silphidae at the place where the corpse was found or at the autopsy, but a postmortem interval of 13 days could be established by the high specificity of this interspecific relationship and the departure from the corpse of this family of Coleoptera.