Forensic entomotoxicology has grown to impact judicial systems in developed countries. Where the use of insects and maggots as samples in death investigations as an alternative technique, especially following degradation or loss of the conventionally used samples. Carrion flies feed on dead bodies and may ingest toxic substances found in the dead body, especially when the body was poisoned before death. The knowledge of how the chemicals interact with the insect following ingestion is crucial to forensic entomotoxicologists. The study investigated the impact of dimethoate on the life cycle of four species of Calliphoridae flies, namely Chrysomya megacephala, Chrysomya saffranea, Chrysomya rufifacies and Chrysomya indiana . Various concentrations of dimethoate (1 ppm, 2 ppm, 3 ppm and 4 ppm) were utilized in the study. The rate of development of the carrion flies showed a negative correlation with the concentration of the chemical. This paper glares at the impact of the chemicals may pose to the insects, and how analysis of such impacts can guide forensic investigations of poisoning and help the investigators to solve the crime puzzle.

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Freshwater bivalves, Lamellidens corrianus were exposed to acute dose of trimethoprim one of the ingredients of sulpha drug (174.80PPM) and Parreysia cylindrica (136.29PPM) up to 96 hours and chronic dose to Lamellidens corrianus of the same antibiotics (34.96 PPM) and to Parreysia cylindrica was (27.25 PPM) up to 21 days.  After 24 and 96 hours of acute treatment and 7, 14 and 21 days of chronic treatment, the mantle, gills, foot, ovary, testis, digestive glands and whole body of the bivalves were separated, dried in the oven and their glycogen contents were estimated.Except gills, trimethoprim reduced the glycogen contents from most of the tissues of L. corrianus while in Parreysia cylindrica overall reduction in the glycogen depot was observed.  The most affected tissue in which the great depletion observed was digestive glands.DOI: http://dx.doi.org/10.3126/ijls.v6i1.5767

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