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Abd Al Galil Fahd Mohammed,Al‐Keridis Lamya Ahmed,AL‐Mekhlafi Fahd A.,Al‐Shuraym Laila A.,Alhag Sadeq K.,Ali El Hadi Mohamed Rania,Wadaan Muhammad A. 한국곤충학회 2021 Entomological Research Vol.51 No.10
Chrysomya saffranea is an insect that is important in criminal forensics as it plays a large role in decomposition on human cadavers. In this paper, the different developmental stages of C. saffranea flies were studied in the laboratory on different food, such as meat, liver, fat tissue and mixed food, to test whether these media affect the development of their larvae and have an impact on the calculation of the post-mortem interval. Our results indicated a significant growth enhancement among flies that fed on the mixed food (pure fat, meat and liver minced in equal proportions) compared with those that fed on minced (pure fat tissues, pure meat of and minced liver) of buffalo. The present results also confirmed the impact of food on the growth of C. saffranea, as well as the post-mortem interval PMI.
El Hadi Mohamed Rania Ali,Galil Fahd Mohammed Abd Al,Al-Keridis Lamya Ahmed,Al-Shuraym Laila A.,Al-Mekhlafi Fahd A.,Alhag Sadeq K. 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
The aim of this study was to compare the effect of diets on the morphological parameters of different devel opmental stages of blowflies Chrysomya megacephala (Fabricius, 1794). Adult C. megacephala flies were collected from a goat cadaver and reared in the laboratory when the max and min temperature were 32 and 24 ◦ C and the relative max and min humidity were ranged between 55 and 31% respectively. Blowflies at various feeding stages (first-, second-, and third-instar larvae) received different types of diets (meat, liver, fats, and mixed). The effects of the different diets on the life cycle duration and the morphological parameters of various stages were observed. The results revealed that the fat diet prolonged the post-mortem interval (PMI) up to 298.5 ± 1.15 hrs, whereas the mixed food diet shortened PMI to the 243.67 ± 0.12 hrs. Significant variation were observed at level (F = 740.71 df = 3P < 0.001). Furthermore, the mixed food diet significantly increased the morphological parameters (length, width, and weight) for almost all stages during the life cycle of blowflies. In contrast, the fat diet decreased these parameters to the lowest level. The present findings may provide a scientific basis for the determination of PMI.
Alhag Sadeq K.,Al-Mekhlafi Fahd A.,Abutaha Nael,Abd Al Galil Fahd Mohammed,Wadaan Muhammad A. 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.1
Plant secondary metabolites have been recently used for the synthesis of different nanoparticles. The present investigation aimed at evaluating the effect of gold (AuNPs) and silver (AgNPs) nanoparticles synthesized using Acalypha fruticosa leaf extracts to control the mosquito Culex pipiens. The A. fruticosa AuNPs and AgNPs spectra displayed their maximum absorption at 550 nm and 440 nm, respectively. The infrared spectra revealed different functional groups related to different chemical compounds. The larval mortality of aqueous leaf extract of A. fruticosa was 499.54 ppm (LC 50 ) and 1734.06 ppm (LC 90 ) after 24 h of treatment. This study revealed that AuNP (LC 50 , 30.2 and LC 90 , 104.83 ppm) and AgNP (LC 50 , 52.86 and LC 90 , 157.227 ppm) preparations were highly effective compared to the A. fruticosa extract alone and also more affordable, as a smaller amount was required. The present findings show the potential larvicidal effect of the synthesized AuNPs and AgNPs for the control of mosquito-mediated disease transmission.