Beyond minPMI: Mite life history as indicator of decomposition duration in a Forensic Case Study
2026 - Volume: 66 Issue: Suppl pages: 141
https://doi.org/10.24349/h1l8-0hc8
ICA 2026 - XVII International Congress of Acarology, 20-24 July 2026, Montpellier
Keywords
Time of death
Tyrophagus longior
Mummification
Scotland
Abstract
Mites constitute a valuable form of biological trace evidence in forensic investigations, with applications in both temporal inference and provenance assessment. In relation to time, their evidential value is commonly interpreted through estimates of the minimum post-mortem interval (minPMI), time of colonization, or post- colonization interval, drawing on the life-history characteristics and developmental dynamics of relevant mite taxa. In parallel, provenance may be inferred from the ecological preferences and habitat specificity of different mite groups, which can help identify the likely origin or environmental history of a trace. This presentation examines a recent case study in forensic acarology with particular emphasis on life-history traits and their interpretive value. The case is distinctive not because it enabled estimation of the overall post- mortem interval, but because it helped resolve the duration of a specific phase within the decomposition process. Although mites are typically associated with short generation times, this study demonstrates that their biological and ecological information can support forensic reconstructions across much longer timescales, including intervals extending over several years. The case therefore highlights the broader evidential potential of mites, not only as indicators of presence or succession, but also as informative markers of decomposition history and context.
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