Insects associated with exposed decomposing bodies in the Colombian Andean Coffee Region

Grisales, Diana; Magnolia, Ruiz; Villegas, Silvio

doi:10.1590/s0085-56262010000400016

Cited by 20 publications

(13 citation statements)

References 24 publications

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“…In Colombia, studies analyzing cadaveric decomposition in rural areas, with pigs (Sus scrofa Linnaeus, 1758) as study models, were done in the Municipality of Consacá, Department of Nariño, at 1,720 masl (Salazar-Ortega 2008) and in the Municipality of Pereira, Department of Risaralda, at 1,550 masl (Grisales et al 2010), and there is one study (Ramos-Pastrana and Wolff 2011) focused on cadaveric decomposition under sunny and shady conditions in a semi-rural area of the Colombian Amazonian Piedmont. With only three studies published on characterization of necrophagous insects in rural areas of Colombia, it becomes evident that more studies on this topic are needed.…”

Section: Introductionmentioning

confidence: 99%

Insects of forensic importance associated to cadaveric decomposition in a rural area of the Andean Amazon, Caquetá, Colombia

2018

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Forensic entomology is a frequently used tool to estimate the time interval between death and the discovery of the corpse. Succession of arthropods associated with cadaveric decomposition was monitored in a rural area of the Municipality of Florencia, Department of Caquetá, Colombia. Three pigs (Sus scrofa) were used as study models. Insect sampling, and monitoring of carcasses and environmental conditions were carried out every five hours. The total time from death to skeletonization was of 545 hours (22.7 days). A total of 30833 insect individuals were collected. Specimens were distributed in nine orders, 46 families, 95 genera and 106 species. Diptera was the most abundant, with 23215 individuals (75.3%), followed by Coleoptera, with 3711 individuals (12%), and Hymenoptera, with 3154 individuals (10.2%). Immature stages of Cochliomyia macellaria, Chrysomya albiceps, Hemilucilia semidiaphana and Ophyra aenescens were the main species involved in tissue consumption and acceleration of the decomposition process. Due to the presence of ants Cheliomyrmex sp., Camponotus sp. and Dinoponera sp., and coleopterans Hister sp., Acylophorus sp. and Philonthus spp., it was not possible to obtain sufficient Diptera egg masses for rearing the colonizing species. These results can be used as a standard to determine the postmortem interval in criminal investigations in the rural area of the Andean Amazon, Caquetá, Colombia.

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Section: Introductionmentioning

confidence: 99%

Insects of forensic importance associated to cadaveric decomposition in a rural area of the Andean Amazon, Caquetá, Colombia

2018

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“…In Colombia, studies on forensic entomology started out in 2001, and have focused mainly on patterns of decomposition in outdoor environments and aquatics conditions (Wolff et al 2001;Pérez et al 2005;Camacho 2005;Martínez et al 2007;Segura et al 2009;Grisales et al 2010;Segura et al 2011;Ramos-Pastrana & Wolff 2011;Barrios & Wolff 2011).…”

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confidence: 99%

Preliminary study of insects associated to indoor body decay in Colombia

Ramos-Pastrana¹,

Velasquez-Valencia²,

Wolff³

2014

Rev. Bras. entomol.

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ABSTRACT. Preliminary study of insects associated to indoor body decay in Colombia. This is the first report studying insects associated to indoor body decay process of a white pig (Sus scrofa) (Artiodactyla, Suidae) in a controlled indoor environment in an urban area of Florencia city, Amazonia Piedmont, Colombia. For a period of 54 days, 9,220 individuals (immature and adults), distributed in 3 orders, 5 families, 10 genera, and 10 species were collected using entomological nets and tweezers. Five decaying stages are described (fresh, bloated, active decay, advanced decay and remains). During the fresh stage we recorded Cochliomyia macellaria (Fabricius, 1775) MATERIAL AND METHODSThe study was carried out in an area of 4 m 2 , in an old bath located on the seventh floor of a building, 70 m from the ground. The bathroom has no windows, a door which remained closed, leaving only a space for the entrance of the insects of approximately 2 cm between the door and the bathroom floor. This building is located in the urban area of Florencia, (2º58' N and 0º40' S and between 71º30' and 76º15' W., at 270 m.) with an annual mean rainfall of 3,793 mm, average temperature of 25°C, mean annual relative humidity of 92%. The region is characterized by being the intersection zone between the piedmont and the Amazonia planes, featured by small hills and alluvial terraces which resulted from accumulation of materials, forming reliefs that go from plane to undulate and abrupt (IGAC 2010).The study was carried out using a white pig (Sus scrofa) of approximately 14.5 kg, slaughtered at the study site (performed by a professional of "Cuerpo Técnico de Investigación", the Technical Body of Researches C.T.I. for the Spanish acronym, of the Nation General Prosecutors), by means of impact of a caliper 9 mm bullet in the frontal region of the skull, on July 20, 2010 at approximately 06:00 a.m. From the moment of death until the carcass was only bones and skin, photographs were taken and notes of the physical changes observed were recorded; samples of insects were taken four times every day (06:00, 10:00, 14:00 and 18:00 hours) all along the decaying process. Besides, factors such as body weight, room temperature (thermo-hygrometer digital Thermo) and rectal body temperature, (Elan digital thermometer) were recorded.Sampling of adult flying insects was made using entomological nets of 20 cm in diameter; non-flying adults and immature individual found on, under, and around the body were collected using tweezers and fine tip brushes, following the methodology proposed by Haskell (1990). The individuals collected were taxonomically determined to species when possible, using the keys proposed by Mariluis & Peris (1984) Life cycles. Once the first masses of eggs were found, they were taken into rearing chambers, consisting of polythene containers with lids, filled with white sterile sand to facilitate pupation. Larvae where fed with ground cow meat, the chambers were kept in styrofoam containers to avoid contamination by other insects and the...

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“…Other species are associated with carrion in a range of decomposition stages and are therefore relevant to forensic entomology (Greenberg 1991, Byrd & Castner 2001. Depending on the locality, adult Piophilidae are mostly seen throughout the bloated and decay stages (Johnson 1975, Fiedler et al 2008, Prado e Castro et al 2012 while the larvae are more common in the advanced ) and dry/remain stages (Martinez et al 2006, Grisales et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2015

CJAI

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Many species of Piophilidae (Diptera) are relevant to forensic entomology because their presence on a corpse can be helpful in estimating the postmortem interval (PMI) and document insect succession. The aims of this paper are to document the fauna of forensically relevant Piophilidae species worldwide and to present an updated checklist and identifi cation key to the Nearctic species, as existing keys are either outdated, too broad in geographical scope to be user-friendly, and/or contain ambiguous characters. Thirteen species are included in the checklist and key. Information on their biology, taxonomy, character variability, and distribution is provided, supplementing the extensive work of McAlpine (1977).

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Insects associated with exposed decomposing bodies in the Colombian Andean Coffee Region

Cited by 20 publications

References 24 publications

Insects of forensic importance associated to cadaveric decomposition in a rural area of the Andean Amazon, Caquetá, Colombia

Insects of forensic importance associated to cadaveric decomposition in a rural area of the Andean Amazon, Caquetá, Colombia

Preliminary study of insects associated to indoor body decay in Colombia

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