Effect of Intoxication with Warfarin Rodenticide on Development and Survival of Forensically Important Fly Maggots in Egypt
Abd El-Bar, Marah Mohammad Hassan Abd El-Bar; Alaa Abd El-Gawad; Mohamed A. Kenawy; Rawda M. Badawy;
Abstract
This study concerns with the effects of Warfarin rodenticide on
development and survival of some fly maggots. Maggots were
collected off warfarin intoxicated and non-toxicated rabbits. These
were laboratory reared on tissues of control rabbits. Other group of
control larvae was reared on pieces of beef mixed with 19 different
concentrations of Warfarin. Intoxicated larvae of both groups had
shorter developmental periods from first instar larvae to pupae
indicating faster development of these larvae as compared to control
ones. The overall duration periods (first instar larvae to Adults) for the
fly species resulted from larvae fed rabbit tissues (specially Lucilia
sericata, Chrysomya albiceps and C. megacephala) generally indicate
faster development of intoxicated larvae than control ones (P˂0.01).
The different Warfarin concentrations had its effects on emerged
adults: (1) 52.63% of larvae that were exposed to 20 to 200 ppm failed
to complete its development to adult stage, (2) 31.58% of larvae
yielded adults with sluggish movements and died within minutes, (3)
5.26% of larvae yielded adults with different forms of abnormalities
and malformations and (4) 10.53% of larvae emerged normal adults.
The study concluded that like other toxins and drugs, Warfarin has an
effect in accelerating the development of dipteran larvae which is an
important indication of cause of death and may be a useful tool for
postmortem interval (PMI) estimation based on entomological
evidences.
development and survival of some fly maggots. Maggots were
collected off warfarin intoxicated and non-toxicated rabbits. These
were laboratory reared on tissues of control rabbits. Other group of
control larvae was reared on pieces of beef mixed with 19 different
concentrations of Warfarin. Intoxicated larvae of both groups had
shorter developmental periods from first instar larvae to pupae
indicating faster development of these larvae as compared to control
ones. The overall duration periods (first instar larvae to Adults) for the
fly species resulted from larvae fed rabbit tissues (specially Lucilia
sericata, Chrysomya albiceps and C. megacephala) generally indicate
faster development of intoxicated larvae than control ones (P˂0.01).
The different Warfarin concentrations had its effects on emerged
adults: (1) 52.63% of larvae that were exposed to 20 to 200 ppm failed
to complete its development to adult stage, (2) 31.58% of larvae
yielded adults with sluggish movements and died within minutes, (3)
5.26% of larvae yielded adults with different forms of abnormalities
and malformations and (4) 10.53% of larvae emerged normal adults.
The study concluded that like other toxins and drugs, Warfarin has an
effect in accelerating the development of dipteran larvae which is an
important indication of cause of death and may be a useful tool for
postmortem interval (PMI) estimation based on entomological
evidences.
Other data
Title | Effect of Intoxication with Warfarin Rodenticide on Development and Survival of Forensically Important Fly Maggots in Egypt | Authors | Abd El-Bar, Marah Mohammad Hassan Abd El-Bar ; Alaa Abd El-Gawad ; Mohamed A. Kenawy ; Rawda M. Badawy | Keywords | Entomotoxicology, Warfarin, malformations, Dipteran larvae, Egypt. | Issue Date | 2018 | Journal | Egypt. Acad. J. Biolog. Sci., 10 (1): 1 – 10 (2018) |
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