IADIZA   20886
INSTITUTO ARGENTINO DE INVESTIGACIONES DE LAS ZONAS ARIDAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Tenebrionidae (Coleoptera) of forensic importance in Mendoza and Catamarca, Argentina: Their relationship to decomposition stages as complementary PMI indicators
Autor/es:
ABALLAY, FERNANDO HERNÁN; CENTENO, NÉSTOR D; FLORES, GUSTAVO ERNESTO; FERNANDO N. JOFRÉ
Lugar:
Praga
Reunión:
Simposio; 5th International Tenebrionoidea Symposium; 2018
Resumen:
Tenebrionidae have usually been reported in forensic studies on human corpses during decomposition but are not frequently used in forensic studies due to the lack of information on their biology and association with the decomposition stages. In this study we identified species of Tenebrionidae associated to corpses and examined their relationships to decomposition stages in pigs. We analyzed species preferences for different stages of decomposition and microenvironmental conditions (shade, sun). Darkling beetles specimens were collected during the entire decomposition process from carcasses of 12 pigs in the arid environment of Mendoza, during the four seasons of the year and two pigs and one llama in Catamarca just during spring. We collected 606 individuals belonging to 17 Tenebrionidae species, of which 590 individuals in Mendoza (467 in spring, 16 in summer, 73 in autumn and 34 in winter) and 16 Catamarca (16 spring). The greatest abundance and richness was reported to occur in both late Decay Advanced and mainly in Dry stages, in all seasons sampled seasons. Different tribes of Tenebrionidae were associated to the stage Dry for each season of the year: in Mendoza Epitragini (Omopheres difficilis, O. scabripennis, Hemasodes minutus) in spring; Opatrini (Conibius franzi) and Alphitobiini (Alphitobius diaperinus) in summer; Endrotini (Hylithus tentyroides) and Alleculini (Lobopoda breyeri) in autumn; Trilobocarini (Salax lacordairei) in winter; and in Catamarca Praociini (Praocis ecostata) and Scotobiini (Leptynoderes strangulata) in spring. The most abundant species at the sun was Salax lacordairei while Trichoton roigi was at the shaded carcass