The Effect of Buscopan®on the Development of the Blow FlyChrysomya megacephala(F.) (Diptera: Calliphoridae) (original) (raw)
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Medico-Legal Forensic Entomology “Use of Insects in Death Investigations”- A Review
Egyptian Academic Journal of Biological Sciences, E. Medical Entomology & Parasitology
Journal of Medical Entomology and Parasitology is one of the series issued quarterly by the Egyptian Academic Journal of Biological Sciences. It is an important specialist journal covering the latest advances in that subject. It publishes original research and review papers on all aspects of basic and applied medical entomology, parasitology and host-parasite relationships, including the latest discoveries in parasite biochemistry, molecular biology, genetics, ecology and epidemiology in the content of the biological, medical entomology and veterinary sciences. In addition to that, the journal promotes research on the impact of living organisms on their environment with emphasis on subjects such a resource, depletion, pollution, biodiversity, ecosystem…..etc. www.eajbs.eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.
Forensic Entomology:an overview
Crime, Security and Society, 2018
Insects are the most important, in terms of number and diversity, group of animals on the earth. Insects have colonized all the world's environments and are associated with both human life and death. Although their economical and sanitary importance is well documented, in the past few years they have been used also in a forensic context. In forensic entomology, necrophagous insects have proved useful in; studying postmortem interval (PMI), postmortem transfer (the movement of a body from one location to another after death), presence of drugs or poisons, and in identifying the victim and/or the suspect. Many species can be used to estimate the minimum PMI (mPMI), according to the stage of cadaver decomposition, body exposure, geographical region, and season. The most important British flies of forensic interest are described.
Forensic Entomology – A Guide to Postmortem Interval
Since many insects are associated with the human body after death, they are always a potential source of evidence in case of murders or suspicious deaths. They are also potentially useful as evidence in situations other than murder cases. Despite this great potential, however, the field of forensic entomology remains obscure in our country, largely because of lack of awareness of the benefits that may accrue from its application and hesitation on the part of others to do a proper post-mor tem examination in cases infested with maggots. Some questions that may be answered using forensic entomological techniques include time, place, and cause of death; when burial occurred; how long a body remained submerged under water; and when the body was placed in a certain given spot. This study involves the application of forensic entomology for crime scene investigations based on the use of insect evidence in determining post-mortem interval. This study involves examination of the insects invo...
The Science of Nature
Forensic entomotoxicology integrates toxicology into forensic entomology to estimate minimum postmortem interval (PMI min) and circumstances of death where toxicants and poisonous substances are the suspected cause of death. Forensic entomotoxicology not only confirms the presence of toxicants in insects feeding off a cadaver but also studies its effect on the bio-morphometry and growth rate of insects. This review article highlights the effects of various toxicants on forensically important species of dipteran flies. It also discusses the parameters that may affect accuracy in estimation of time since death. The bio-physical effects of toxicants (excluding the analytical approach for qualitative detection) would help understand the trends in forensic entomotoxicological research worldwide.
Naturwissenschaften, 2004
Necrophagous insects are important in the decomposition of cadavers. The close association between insects and corpses and the use of insects in medicocriminal investigations is the subject of forensic entomology. The present paper reviews the historical background of this discipline, important postmortem processes, and discusses the scientific basis underlying attempts to determine the time interval since death. Using medical techniques, such as the measurement of body temperature or analysing livor and rigor mortis, time since death can only be accurately measured for the first two or three days after death. In contrast, by calculating the age of immature insect stages feeding on a corpse and analysing the necrophagous species present, postmortem intervals from the first day to several weeks can be estimated. These entomological methods may be hampered by difficulties associated with species identification, but modern DNA techniques are contributing to the rapid and authoritative identification of necrophagous insects. Other uses of entomological data include the toxicological examination of necrophagous larvae from a corpse to identify and estimate drugs and toxicants ingested by the person when alive and the proof of possible postmortem manipulations. Forensic entomology may even help in investigations dealing with people who are alive but in need of care, by revealing information about cases of neglect.
Correlation of Insects with Forensic Sciences
2018
This chapter portrays the importance of insects in forensic sciences and highlights that how the insects are used as evidence in the court and how they can assist in solving crimes. Forensic science plays a key role in the investigation of crimes and terrorism. Forensic entomology is one of the emerging fields of forensic sciences which aids in legal investigation. Postmortem interval or time since death is the time elapsed from death to the discovery of the corpse. Various methods are used to estimate postmortem intervals. They include algor mortis, livor mortis, rigor mortis, and chemical and enzymatic changes. Insects also play a significant role in estimation of time since death which is a prime concern in the field of forensic medicine. Insects are considered to be the first visitors on any decomposing dead matter. Forensic entomology is a field that is highly neglected around the world so far. Much research work is required to flourish this field for the purpose of forensic investigation. The basic challenge for forensic entomologists is the identification of insects at larval stages as they all look similar. The taxonomic keys for identification at this level are still unavailable. There is a need to cover the drawbacks of morphological identification of these species especially if the adult form of insect is not available.
Austral Entomology, 2018
In forensic entomology, the minimum and maximum post-mortem interval (PMI) is estimated on the basis of the developmental stages of necrophagous Diptera larvae on a corpse. The nutritional composition of the decomposing tissue, which can influence larval development rates, may impact the precision of this estimate. We compared the post-embryonic development of Chrysomya albiceps reared on bovine muscle and swine lung. Forty newly hatched fly larvae, per treatment, were placed on 60 g of the following tissues: bovine muscle (control) and swine lung (T1). Each treatment had three replicates. The experiments were maintained under controlled conditions (28°C day/26°C night, 70 ± 10% RH and 12 h photophase). Flies reared on bovine muscle took significantly longer to complete their larval phase (8.1 days) than did larvae reared on swine lung (6.8 days). The total duration of development in bovine muscle was significantly slower (12.3 days) than in swine lung. Larvae that were reared on swine lungs were significantly heavier than larvae reared on bovine muscle. Total larval viability was high on pig lung (over 49%). The sex ratio was closer to the 1:1 ratio in bovine muscle (rs = 0.55), with a slightly greater proportion of female larvae. The percentage of abnormality remained within the predicted range. The results show that the different tissues influenced larval development. This underlines the importance of considering the type of cadaveric tissue when larval development is used to calculate the minimum PMI in forensic investigations.
Forensic Entomology: A Comprehensive Review
Advancements in Life Sciences, 2019
etermination of post mortem interval is done with various methods depending upon the condition of the dead body and the circumstances in which it is found. Ruling out foul play in unnatural deaths has been an enigma of a sort for forensic pathologists and scientists all over the world. The methods to determine the cause and manner of death keep on emerging with ongoing researches in the fields of forensic sciences. Many methods have been devised to determine cause, manner and specifically time since death. Forensic entomology is one such field that aids in determination of time since death, especially in putrefied corpses found in different habitats in mysterious unknown circumstances. The field keeps on emerging with the advent of new techniques on molecular level, including DNA analysis and identification based on entomological data that has diversified over the years. The standards and guidelines for entomological data collection and processing needed for implication on the crime scene must be revised now and again for assistance of crime scene investigators, scientists, entomologists and pathologists. Various factors must be considered while processing entomological data that affect post mortem intervals. The keen study of life cycles, groups of similar insects, valid and standard methods of insect collection, breeding and identification can give a lead on cause, manner, time, place and circumstances of unknown or unnatural deaths.