Chemotaxonomic Profile and Intraspecific Variation in the Blow Fly of Forensic Interest Chrysomya megacephala (Diptera: Calliphoridae)

摘要: Necrophagous insects such as blow flies (Diptera: Calliphoridae) are considered crucial in forensic entomology. Identification at species level and determination of larval stage the basis for estimation postmortem interval (PMI). Insect evidence can also be used crime scenes, since body displacement is common. The aim this study was to determine chemotaxonomic profile intraspecific variability forensically important fly Chrysomya megacephala (F. 1794). Adults were collected municipalities Dourados-MS (Brazil) Rio Claro-SP (Brazil), then transferred laboratory oviposition development immature stages. Chemical analysis cuticular compounds performed by gas chromatography. Cuticular chemical profiles varied significantly between two populations, well developmental stages, supporting use these a complementary tool help identify its along with geographical variability. This could greatly accelerate investigations, eliminating need allow larvae develop until adult order confirm identity sample origin.