The study of carrion fauna associated with buried human corpses from a forensic perspective could provide useful information in criminal investigations. Insects and other arthropods remains sampled of 44 legally exhumed infant skeletons from La Plata (Buenos Aires, Argentina). They were identified at different taxonomic levels depending on the state of preservation. The specific diversity, abundance and frequency were analyzed and each taxon was assigned to the hypothetical colonization sequence: burial colonization, post-exhumation contamination at cemetery deposit or soil fauna. The phorid Dohrniphora sp. is mentioned for the first time in Argentina as carrion fauna of underground colonization, and the assemblage of Dohrniphora sp., Megaselia scalaris and Hydrotaea aenescens is proposed as indicator of buried cadavers. These findings provide new useful data to be applied in forensic entomology research.
RESUMEN La estimación de la edad en subadultos se considera más precisa que en adultos, dado que durante este período ocurren los principales eventos morfofuncionales del crecimiento y desarrollo y son bien conocidos los cambios progresivos que se producen en el individuo durante su ontogenia. Los estudios de estimación de edad sobre restos esqueléticos infanto-juveniles se apoyan fundamentalmente en dos indicadores: longitud de huesos largos y desarrollo de la dentición. Algunas investigaciones se han enfocado en la comparación de las edades estimadas por ambos indicadores, sin embargo, no son tan frecuentes los estudios que comparen dichas estimaciones en perío-do fetal e infantil. El presente trabajo tiene como objetivo evaluar la relación entre la edad cronológica y la edad es-PALABRAS CLAVE colecciones osteológicas documentadas; esqueletos fetales e infantiles; subadultos timada por indicadores biológicos en una muestra esquelé-tica de edad cronológica documentada. Para alcanzar este objetivo, se seleccionó una muestra de 35 individuos con edades fetales y hasta los 14 meses postnatales y sin evidencias de patologías. Se compararon las edades cronoló-gicas documentadas y las edades estimadas por longitud de los huesos largos y por estadios de desarrollo de la dentición. Los resultados indican que la estimación de la edad en el período fetal a partir de la dentición o de la longitud de los huesos largos es confiable, en tanto que en el período postnatal la edad dental es el indicador más preciso. Se discuten los resultados en relación con los estudios de crecimiento y se evalúan sus implicancias en estudios bioantropológicos. Rev Arg Antrop Biol 16(2):103-109, 2014.
KEY WORDS documented skeletal collections; infant and fetal skeletons; subadultsABSTRACT Age estimation in subadults is considered to be more accurate than in adults because during this period the main morphological and functional events associated with growth and development occur, and the progressive changes that take place in the individual during its ontogeny are well known. Age estimation studies performed on infantile-juvenile skeletal remains are mainly based on two indicators: length of long bones and tooth development. Some research has focused on comparing the estimated ages yielded by both indicators. However, studies comparing these estimates in fetal and infant period are not as frequent. This paper aims to assess the relationship between chronological age and age estimated by biological indicators in a documented skeletal sample. To achieve this objective, a sample of 35 individuals with fetal age and up to 14 postnatal months without evidence of pathologies was selected. Documental age and age estimated by the length of long bones and stages of dentition development were compared. The results indicate that age estimation by dentition and long bones length is reliable in the fetal period, but dental age is the most accurate indicator in the postnatal period. The results are discussed in relation to growth studies, and their implicat...
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