Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Blowfly maggots provide physical evidence for forensic cases

02.09.2014

Evidence collected from blowfly maggots could help in the investigation in murder cases.

Estimation of the post mortem interval (PMI) is one of the most crucial matters in autopsies and entomological specimens have been widely used to determine PMI after 72 hours of death. This is done using the oldest blowfly larvae found and from the succession pattern of insects that colonize the dead remains. Thus, the use of blowflies in forensic cases are crucial.


Chrysomya megacephala - a common blowfly in Malaysia

The most common blowflies in Malaysia are Chrysomya megacephala and Aechotandrus rufifacies. Blowflies arrive and deposit their eggs on a dead body within minutes of death occuring as the odour released from the carcass attracts them.

The eggs then grow to feeding larvae, which feed on the dead remains until they reach maturity. Larvae that feed on the tissues of an individual who took drugs or was poisoned will ingest these substances as well as their metabolites, proving that the drugs had accumulated in the body.

Some criminal cases involve the use of firearms. The forensic investigation of such cases requires physical evidence to be collected at the scene of the crime. In extreme conditions, when the bullet case is not found and the dead body is actively decomposing, blowfly maggots obtained from the dead remains hold potential clues in aiding the forensic investigation.

Our laboratory studied the presence of several different types of toxins, including malathion, paraquat, gasoline, paracetamol and ketum extracts, along with gunshot residue (GSR), to determine the effects of these toxins and GSR in the development rates of the blowfly species, Chrysomya megacephala and Aechotandrus rufifacies. Our aim was to determine whether the presence of toxins may affect the estimation of PMI. We were also exploring the potential of blowfly samples to be applied in forensic investigations for detecting toxins and GSR.

Our results showed that the presence of malathion, paraquat, gasoline, paracetamol, ketum extracts and GSR affected the development rates of blowflies. In real intoxication and shooting cases involving decomposed remains, estimation of the correct PMI using larvae samples should consider the delayed and accelerated duration on the development of the blowflies. We also found the presence of active components of toxins in the blowfly samples we studied, proving the potential of blowfly samples to be tested in investigations to identify toxins in the victim’s body.

In conclusion, the blowfly species, C. megacephala and A. rufifacies, can provide crucial and important physical evidence in forensic investigations.

For further information contact

Rumiza Abd Rashid
Faculty of Applied Science
University Teknologi MARA
Malaysia
Email: rumiza9550@salam.uitm.edu.my

Darmarajah Nadarajah | Research SEA News
Further information:
http://inforec.uitm.edu.my
http://www.researchsea.com

Further reports about: Teknologi UiTM drugs eggs evidence forensic gasoline investigations larvae malathion species toxins

More articles from Life Sciences:

nachricht Closing the carbon loop
08.12.2016 | University of Pittsburgh

nachricht Newly discovered bacteria-binding protein in the intestine
08.12.2016 | University of Gothenburg

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>