Forensic Entomology research paper Example | Topics and Well Written Essays - 1500 words

Forensic Entomology - Research Paper ExampleIt was not until 1668 that Francesco Redi disproved this by observing how these creatures unquestionable into flies, and much later, in 1894 that Megnin developed a method to link this process with a method for shrewd the age of a dead body (Byrd and Castner, p. 41). Throughout the twentieth century scientific methods of analysis subscribe to improved greatly, with the result that at the present time forensic entomology is a well- schematic discipline within forensic science, complete with rigorous protocols and extensive underpinning research which help to ensure that it provides relevant, accurate and secure state for crime probe and prosecution purposes. Forensic entomology is therefore a dual discipline corporate trust elements of natural science in the methods of collection and analysis of samples, and elements of criminology, in the interpretation and application of results, and in the preservation of evidence which is reliable enough to stand up to scrutiny in the criminal justice system. Although these cardinal areas have a different focus, they are closely aligned in crime investigation procedures, requiring quislingism across disciplines according to clear scientific principles. This paper explores the contribution that forensic entomology makes to crime investigation and prosecution by examining three of its major areas of application 1. Determining the post mortem interval (PMI) 2. Providing human deoxyribonucleic acid linkages and 3. Providing toxicology learning. A number of limitations as well as legal and procedural issues are covered similarly in section 4. 1.Determining the Post Mortem Interval (PMI) through forensic entomology. 1.1 Species involved. Corpses provide a very alter ephemeral environment which is colonized by particular communities of arthropods in a predictable manner, with one species avocation on after another in a process known as succession (Horswell, 2004, p. 347). The principal(prenominal) species The first species to arrive, often within minutes of death, are blowflies. Blowflies from the Calliphoridae family are generally the first portray invaders, and then after these others follow Sarcophagids which constitute a second submit, often overlapping with the first stage somewhat. After this follow the third stage Muscids and Piophilids (Horswell, 2004, p. 348). 1.2 Types of information obtainable. Scientists are able to obtain good information from a corpse soon after death, by taking photographs, measuring temperature, observing rigor mortis and all wounds, and conducting various other tests on the tissue. With increasing passage of time, however, the tissue degenerates, and it is more difficult to obtain reliable data. Because the life cycle of insects is known, and the effects of temperature and weather can be factored in to the equation, careful collection of insects at the scene can provide effectual estimate of the PMI. Empirical work in the laboratory has established standard growth times for many of the most common carrion feeding species, and this means that the determination of PMI has endure the most used application of forensic entomology in modern crime scenes (Nabity et al. 2006, p. 1276). Another useful piece of information that can be obtained from examination of species present in a corpse is the whether or not the body has been moved.