The First Survey of Forensically Important Entomofauna Collected from Medicolegal Autopsies in South Korea

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Abstract

Forensic entomology applies insect evidence to legal problems such as the estimation of minimum postmortem interval (mPMI). For this purpose, knowledge of the insect fauna that are attracted to human cadavers in each geographic region is a prerequisite. Despite many studies investigating the insect fauna attracted to meat, there has been no survey of the entomofauna on human cadavers in the East Asian temperate climate zone, particularly in Korea. Therefore, this study reports the entomofauna collected from medicolegal autopsies in northeastern Seoul and its suburbs. Insect samples were collected from 35 medicolegal autopsies in 2010, 2011, and 2013. Molecular and morphological methods were utilized for taxonomic identification. Among 1398 individual samples belonging to 3 orders, 13 families, 18 genera, and 32 species, the dominant family and species were Calliphoridae and Lucilia sericata, respectively. Despite its limited scale, this study provides a snapshot of the general entomofauna that are attracted to human cadavers in this region.

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Most cited references 34

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Best practice in forensic entomology--standards and guidelines.

Emmanuel Gaudry, Martin J R Hall, Emmanuel Gaudry … (2007)

Forensic entomology, the use of insects and other arthropods in forensic investigations, is becoming increasingly more important in such investigations. To ensure its optimal use by a diverse group of professionals including pathologists, entomologists and police officers, a common frame of guidelines and standards is essential. Therefore, the European Association for Forensic Entomology has developed a protocol document for best practice in forensic entomology, which includes an overview of equipment used for collection of entomological evidence and a detailed description of the methods applied. Together with the definitions of key terms and a short introduction to the most important methods for the estimation of the minimum postmortem interval, the present paper aims to encourage a high level of competency in the field of forensic entomology.

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Forensic entomology cases in Thailand: a review of cases from 2000 to 2006.

Kabkaew L Sukontason, Rungkanta Methanitikorn, Tanin Bhoopat … (2007)

This paper presents and discusses 30 cases of cadavers that had been transferred for forensic entomology investigations to the Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, northern Thailand, from 2000 to 2006. Variable death scenes were determined, including forested area and suburban and urban outdoor and indoor environments. The fly specimens found in the corpses obtained were the most commonly of the blow fly of family Calliphoridae, and consisted of Chrysomya megacephala (F.), Chrysomya rufifacies (Macquart) Chrysomya villeneuvi Patton, Chrysomya nigripes Aubertin, Chrysomya bezziana Villeneuve, Chrysomya chani Kurahashi, Lucilia cuprina (Wiedemann), Hemipyrellia ligurriens (Wiedemann), and two unknown species. Flies of the family Muscidae [Hydrotaea spinigera Stein, Synthesiomyia nudiseta (Wulp)], Piophilidae [Piophila casei (L.)], Phoridae [Megaselia scalaris (Loew)], Sarcophagidae [Parasarcophaga ruficornis (F.) and three unknown species], and Stratiomyiidae (Sargus sp.) were also collected from these human remains. Larvae and adults of the beetle, Dermestes maculatus DeGeer (Coleoptera: Dermestidae), were also found in some cases. Chrysomya megacephala and C. rufifacies were the most common species found in the ecologically varied death scene habitats associated with both urban and forested areas, while C. nigripes was commonly discovered in forested places. S. nudiseta was collected only from corpses found in an indoor death scene.

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Methods used for the killing and preservation of blowfly larvae, and their effect on post-mortem larval length.

J. Adams, Robert Hall (2003)

A record of the length of the largest larvae collected from a corpse can be used to estimate the age of the oldest larvae present and, therefore, give an estimate of minimum time since death. Consequently, factors that affect post-mortem larval length will impact on any estimate of PMI based on it. Methods used to kill and preserve larvae are known to affect post-mortem length. This study looks at the effects of different preservatives, and variations in the protocol used for killing larvae by immersion in a hot water bath = [hot water killed; HWK], on the length of dead larvae of two common blowfly species. Post-feeding third instar Calliphora vomitoria and Lucilia sericata larvae were either HWK in boiling water and then placed in 80% ethanol or 10% formaldehyde solution, or placed live into the preservatives. For both species, choice of preservative and method of killing significantly affected post-mortem length. There were significant interspecific differences in their response to identical methods of killing and preservation. Additional experiments were carried out where C. vomitoria larvae were HWK in water at 80 and 100 degrees C for 1, 30, 60 and 90 s duration. Both temperature and duration significantly affected post-mortem length. Maximum length was attained after at least 60 s immersion. The amount of post-mortem decomposition that occurred after the larvae were placed in preservative could be greatly reduced by increasing the duration of immersion and/or increasing the water temperature. For the HWK larvae, it was possible to record their length immediately after death and before they had been placed in preservative. This data revealed that where 80% ethanol was used as a preservative the larvae expanded in the preservative. The timing of this expansion was investigated with a sample of C. vomitoria, HWK at 100 degrees C for 30 s and recording post-mortem length immediately after death and again after 3, 6, 9, 12, 24, 27, 30 and 33 h storage in 80% ethanol. Maximum length was recorded after 12 h storage and the rate of expansion was highest during the first 3 h in this preservative. After long-term storage (290 days), larvae killed and preserved in the same way were on average 0.7% longer than immediately after death and 0.6% (0.11 mm) smaller than when last measured (after 28 days storage).

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Author and article information

Journal

Journal ID (nlm-ta): Biomed Res Int

Journal ID (iso-abbrev): Biomed Res Int

Journal ID (publisher-id): BMRI

Title: BioMed Research International

Publisher: Hindawi Publishing Corporation

ISSN (Print): 2314-6133

ISSN (Electronic): 2314-6141

Publication date (Print): 2015

Publication date (Electronic): 22 June 2015

Volume: 2015

Electronic Location Identifier: 606728

Affiliations

¹Department of Legal Medicine, Korea University College of Medicine, 73 Inchon-ro, Seongbuk-gu, Seoul 136-705, Republic of Korea

²National Forensic Service, 10 Ipchun-ro, Wonju-si, Gangwon-do 220-170, Republic of Korea

Author notes

*Seong Hwan Park: kuforen@ 123456gmail.com

Academic Editor: Christen Rune Stensvold

Article

DOI: 10.1155/2015/606728

PMC ID: 4491565

SO-VID: 81d4e49b-79bb-4dab-a6cb-bfe2d77b4989

License:

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

History

Date received : 3 April 2015

Date revision received : 12 June 2015

Date accepted : 14 June 2015

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