Abstract
ABSTRACT Forensic entomotoxicology examines the impact of toxicants on insect development, their presence in carcass-feeding insects, and their bioaccumulation to determine the post-mortem interval (PMI). Incorporate environmental elements to obtain precise estimates of the post-mortem interval. This study examined how cypermethrin affected the fly, Lucilia sericata, throughout various developmental stages. Larvae were grown on pork tissues (liver and muscle) spiked with cypermethrin at various temperatures (20, 25, and 30°C). The study further explored how cypermethrin affected the development rate of L. sericata. The findings revealed that cypermethrin in pork liver and muscle accelerates the growth of Lucilia sericata compared to control samples. This change was constant across all temperature regimes. At 30°C, the average duration from 1st instar to pupae was 172 ± 1.54 hours, at 25°C it was 261.1 ± 1.9 hours, and at 20°C it was 366.2 ± 0.75 hours in pork liver. The average duration from 1st instar to pupae for cypermethrin-treated pork muscle was 169.7 ± 1.45 hours, 261.5 ± 0.65 hours, and 359.7 ± 0.55 hours at 30°C, 25°C, and 20°C, respectively. PMI estimates were impacted by differences in L. sericata larval stage: cypermethrin changed the morphology and the larvae could remain at 30°C for up to 7 hours in pork liver and 4 hours in pork muscle.
Published Version
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