Propagação larval pós-alimentar de Lucilia sericata (Meigen, 1826) (Diptera: Calliphoridae) em arena circular

• Autor(a) principal: Pires, Sabrina Medeiros
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFPel - Guaiaca
• Texto Completo: http://repositorio.ufpel.edu.br/handle/ri/2338
• topic: Parasitologia; Propagação larval; Entomologia forense; Lucilia sericata; Calliphoridae; Medicina legal; Parasitology; Larval dispersion; Forensic entomology; Lucilia sericata; Calliphoridae; Medical jurisprudence; CNPQ::CIENCIAS BIOLOGICAS::PARASITOLOGIA

The blowflies are the first insects to compose the faunistic succession of human cadavers, thus helping to determine the postmortem interval (PMI). However, failing to consider larval post-feeding dispersal can compromise medical-criminal inquiries. In order to investigate the relationship between post- feeding Lucilia sericata larvae and their weight, radial dispersion and depth, an artificial arena was built simulating the natural environment. We observed a difference in mean pupal weight between males (30.28mg) and females (32.35mg). We also observed that the majority of pupae were recovered a distance of 33 to 45cm from the center of the arena, and at a depth of 6 to 8cm from the surface. However, we observed no differences in radial dispersion and depth of pupation between males, females or unviable individuals. Correlation analysis between weight and distance (r = 0.246) and between weight and depth (r = 0.321) was directly proportional, suggesting that heavier pupae dispersed farther and deeper than lighter pupae. The experiment also allowed us to conclude that a circular arena permitted larval dispersion all directions.