Vertebrate scavengers alter the chronology of carcass decay,Austral Ecology

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Vertebrate scavengers alter the chronology of carcass decay
Austral Ecology ( IF 1.6 ) Pub Date : 2020-07-30 , DOI: 10.1111/aec.12939
Luiz A. Lira _{1,

2} , Ludmilla M. S. Aguiar ₁ , Maurício Silveira ₁ , Marina R. Frizzas ₁

Affiliation

When feeding on exposed corpses, vertebrate scavengers can alter the chronology of decay and interfere with post‐mortem interval estimation. However, information on vertebrate scavengers’ actions in areas of the Brazilian Cerrado is scarce, which may constrain future criminal investigations. Thus, we aimed to identify the vertebrate species that visit carcasses, determine whether the number of visits between seasons and among phytophysiognomies varies and examine whether decay stage influences attractiveness to vertebrate scavengers. We obtained data using camera traps installed in two protected areas with three Cerrado phytophysiognomies. The 2032 photographs and 109 videos obtained showed that eight mammal and one bird species interacted with the carcasses. Canis familiaris and Caracara plancus had the highest numbers of carcass visits and feeding events. Stage of decay negatively influenced the number of mammal visits to the carcasses, but bird visits were not affected. Seasons did not affect visit number, and most visits occurred in the cerrado sensu stricto. Because they interfere with the decay process, possibly compromising evidence interpretation, scavengers should be considered in forensic analyses.

中文翻译：

脊椎动物清除剂改变car体腐烂的时间

当以裸露的尸体为食时，脊椎动物的清道夫可以改变腐烂的时间，并干扰验尸间隔的估计。但是，关于在巴西Cerrado地区的脊椎动物清道夫行动的信息很少，这可能会限制将来的刑事调查。因此，我们旨在确定访问car体的脊椎动物种类，确定季节之间以及植物生理学之间的访问次数是否变化，并检查衰变阶段是否影响对脊椎动物清除剂的吸引力。我们使用安装在具有三个Cerrado植物生理学特征的两个保护区域中的相机陷阱获得数据。获得的2032张照片和109个视频显示，有8种哺乳动物和1种鸟类与尸体相互作用。犬似犬和长accar体访视和喂食事件最多。腐烂阶段负面影响了哺乳动物对visit体的探视次数，但对鸟类的探视未受影响。季节不会影响探视次数，大多数探视发生在塞拉多森苏拉塞多。由于它们会干扰衰减过程，可能会损害证据解释，因此在法医分析中应考虑使用清除剂。

更新日期：2020-07-30

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