Sains
Malaysiana 53(6)(2024): 1255-1267
http://doi.org/10.17576/jsm-2024-5306-03
Post Mortem Interval Calculation of Oryctolagus cuniculus through Forensic Entomofauna – A Tool for
Resolving Medicolegal Issues in Crime Scenes
(Pengiraan Sela Masa Pascakematian Oryctolagus cuniculus melalui
Entomofauna Forensik – Suatu Alat untuk Menyelesaikan Isu Medikolegal di Tempat Kejadian Jenayah)
MOHAMMAD ATTAULLAH1,*,
FAHIM ULLAH1, IMRAN KHAN1, IKRAM ILAHI1,
MUHAMMAD ZAHOOR2, MUHAMMAD AMIN3, RIAZ ULLAH4, ESSAM A. ALI5, ARIF JAN6 & SIDRA BIBI1
1Department of
Zoology, University of Malakand, Chakdara, Lower Dir, Pakistan
2Department of
Biochemistry, University of Malakand, Chakdara, Lower Dir, Pakistan
3Department of
Zoology, University of Karachi-75270, Karachi, Pakistan
4Department of Pharmacognosy, College of Pharmacy, King Saud University,
Riyadh, Saudi Arabia
5Department
of Pharmaceutical Chemistry, College of Pharmacy King Saud University Riyadh
Saudi Arabia
6Department of Fisheries, Wildlife, and Conservation
Sciences, Oregon State University, Nash Hall 104, Corvallis, OR 97331, USA
Diserahkan: 20 Ogos 2023/Diterima: 10 Mei
2024
Abstract
Post
mortem interval (PMI) is an essential tool in crime scene investigations and is
pivotal for resolving medicolegal issues. Developmental rates of insects can be
utilized for the calculation of PMI of known and unknown animal and human
cadavers. In the present study, PMI for rabbit, Oryctolagus cuniculus (Linnaeus 1758) was calculated through insect developmental rates and insect
successional patterns on decomposing carcass of O. cuniculus. A
total of 8 species of insects belonging to three orders and 8 families were
identified on the O. cuniculus carcass. The
blow fly, Chrysomya albiceps (Wiedemann 1819) belonging to the family
Calliphoridae was the common and first visitor species to the rabbit carcass.
The developmental rate of C. albiceps associated with the ambient
climatic conditions was used as a model for the calculation of PMI. Temperature
correction factor of the carcass temperature versus met station temperature was
found as y = 0.9185x + 3.3624; R² = 0.8343. The accumulated degree days
(∑ADD) were found as 535 while the accumulated degree hours (ADH) were
found as 12842 with a resultant PMI of 7 days (ADD) and 167.4 h (ADH). Five
decomposition stages of O. cuniculus were identified as fresh, bloated,
active decay, advanced decay and dry remains stage. Findings of the present
study can be applied for the calculation of PMI of known and unknown animal and
human cadavers for resolving medicolegal issues in crime scenes.
Keywords: Calliphoridae;
carcass; Chrysomya albiceps; degree days; forensic science
Abstrak
Sela masa
pascakematian (PMI) sangat penting dalam penyiasatan tempat kejadian jenayah
dan penting untuk menyelesaikan isu medikolegal. Kadar perkembangan serangga
boleh digunakan untuk pengiraan PMI haiwan dan mayat manusia yang diketahui dan
tidak diketahui. Dalam kajian ini, PMI untuk arnab, Oryctolagus cuniculus (Linnaeus 1758) telah dihitung melalui kadar perkembangan serangga dan corak
berturutan serangga pada bangkai O. cuniculus yang mereput. Sebanyak 8
spesies serangga yang terdiri daripada tiga order dan 8 famili telah dikenal
pasti terdapat pada bangkai O. cuniculus. Langau hijau, Chrysomya
albiceps (Wiedemann 1819) daripada famili Calliphoridae adalah spesies
pelawat biasa dan pertama kepada bangkai arnab. Kadar perkembangan C.
albiceps yang dikaitkan dengan keadaan iklim ambien digunakan sebagai model
untuk pengiraan PMI. Faktor pembetulan suhu karkas berbanding suhu stesen
dipenuhi didapati sebagai y = 0.9185x + 3.3624; R² = 0.8343. Hari darjah
terkumpul (∑ADD) didapati sebagai 535 manakala jam darjah terkumpul (ADH)
didapati sebagai 12842 dengan PMI terhasil 7 hari (ADD) dan 167.4 jam (ADH).
Lima peringkat penguraian O. cuniculus dikenal pasti sebagai peringkat
segar, kembung, pereputan aktif, pereputan lanjutan dan peringkat sisa kering.
Penemuan kajian ini boleh digunakan untuk pengiraan PMI haiwan dan mayat
manusia yang diketahui dan tidak diketahui untuk menyelesaikan isu medikolegal
di tempat kejadian.
Kata kunci: Bangkai; Calliphoridae; Chrysomya albiceps;
hari darjah; sains forensik
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*Pengarang untuk surat-menyurat; email:
m.attaullah@uom.edu.pk
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