A Preliminary Study of Carrion Insects and Their Succession in Luanda, Angola
2019
Sebastião, Manuel | Castro, Catarina Prado e | Prado e Castro, Catarina
The study of the arthropod fauna involved in carcass decomposition is crucial for medicolegal forensic purposes. This knowledge is especially needed in countries with high levels of criminality and where the arthropod fauna is still under-recorded and not well known, such as Angola. We present data from the first survey on sarcosaprophagous flies and beetles in Angola, conducted in Luanda over a 17-d period, in the wet summer season. In total, 881 adult and immature specimens, belonging to 18 species, were collected from three pig carcasses that were sampled daily. Three species were not previously known from Angola. The dominant flies were Chrysomya albiceps (Wiedemann, 1819) (Diptera: Calliphoridae) and Chrysomya megacephala (Fabricius, 1794), but Chrysomya marginalis (Wiedemann, 1830), Chrysomya putoria (Wiedemann, 1830), and Liosarcophaga emmrichiana (Lehrer, 2002) (Diptera: Sarcophagidae) also bred on the carcasses. The dominant beetles were Dermestes maculatus De Geer, 1774 (Coleoptera: Dermestidae), Saprinus splendens (Paykull 1811) (Coleoptera: Histeridae), and Necrobia rufipes (De Geer, 1775) (Coleoptera: Cleridae). Because of the hot weather during the experimental period (~27°C), decomposition was extremely fast. Periods of insect activity on carcasses are presented and comparisons are made with other carrion communities reported from the Afrotropical region.
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