Detection of Malathion in Different Stages of Chrysomaya megacephala and Its Implications for Forensic Entomology | ||||
| Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology | ||||
| Article 10, Volume 10, Issue 2, December 2018, Page 103-111 PDF (892.96 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eajbse.2018.65867 | ||||
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| Authors | ||||
| Reda F.A. Bakr1; Rawhia H. Ramadan2; Samah M. A. Hussien3 | ||||
| 1Entomology Department, Faculty of Science, Ain-Shams University, Cairo, Egypt | ||||
| 2Entomology Department, Faculty of Science, Benha University, Egypt | ||||
| 3Theodore Bilharz Research Institute - El Warraq - Giza | ||||
| Abstract | ||||
| This study investigated the potential effects of Malathion in rabbit carcasses on the developmental of Chrysomya megacephala larvea, an important forensic species, and their possible implications for the calculate the postmortm interval ( PMI) .Three domestic rabbits Oryctolagus cuniculus were used in each experiment. Two rabbits were administered orally with 513 mg/kg (R1), 1026 mg/kg (R2) of Malathion, The third one was fed with distilled water (R0).Chrysomya megacephala larvae were allowed to grow on the liver (L), muscles (M) and all carcasses of rabbit. Malathion was detected in all collected rabbit tissues that received different dosages of Malathion (R1 and R2) but not detected in any of the controls (R0).The highest Malathion concentration was detected in lungs followed by muscle tissue and fats of R2(35.7 mg/kg, 29.75 mg/kg, and 22.31mg/kg, respectively). All third larval instars and pupae of C. megacephala were positive for malathion (R1 and R2), while malathion was not detected in all samples from the control colony (R0). Strong correlations were found between administered dosage and tissue concentrations. Malathion concentrations were higher in the third larval instars sampled for the concentration (R2) than those from muscle tissues of (R2) which followed by those from L2 colonies. Detected Malathion concentrations in the third larval instars and pupae of C. megacephala were significantly lower than those detected in the rabbit tissues except fats and heart from postmortem interval rabbit tissues treated with (R1). Moreover, the highest levels of Malathion were noticed in the pupae emerged from (R2) colony. Whereas, the lowest levels were detected in the pupae emerged from M1 colony. | ||||
| Keywords | ||||
| malathion; Chrysomya megacephala; rabbit carasses; Forensic entomology | ||||
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