Navigation Links
Dead body feeding larvae useful in forensic investigations
Date:7/23/2014

Non-biting blow fly Chrysomya megacephala is commonly found in dead bodies and is used in forensic investigations to determine the time of death, referred to as the post mortem interval. A report of synanthropic derived form of C. megacephala from Tamil Nadu is provided for the first time based on morphological features and molecular characterization through generation of DNA barcoding. This study, significant in forensic investigations was published in the open access Biodiversity Data Journal.

Chrysomya megacephala is commonly found in corpse in many parts of the world. It is a tremendously abundant species and is used as fish bait in northern and south-west India. It is known to breed in human faeces, decomposed meat and fish as well as in discarded organic materials.

This dipteran fly, therefore, serves as a potential vector of many diseases due to its close association with human dwellings. In general, C. megacephala is considered important in medical, veterinary and forensic sciences. Post mortem interval (PMI) determination is useful in cases of homicide, suicide and accidental or unattended death because of natural causes. An important aspect of calculating the PMI is the accurate and quick identification of the dipteran fly collected from a crime scene.

Behaviour and developmental times of dipteran flies are essential in determining the PMI. Currently, the most common way is to identify dipteran flies for examining the adult stage under a compound microscope. It requires that the larvae collected from a crime scene should be reared until development is complete. The dipteran fly can be identified in the larval form, but if the critical characteristics are small or vary ever so slightly, misidentification is possible.

Morphological identification is difficult within the dipteran flies. A more precise method is to identify the dipteran flies genetically by encoding the collected DNA sequence at mitochondrial cytochrome oxidase gene subunit I (mtCOI). Presently, three forms of C. megacephala are recognized, namely, the normal form (nf), the synanthropic derived form (sdf) and the recently reported feral derived form (fdf).

The normal form is confined to forests of South Pacific Islands while synanthropic derived form has spread around the world from Papua New Guinea. The recently reported feral derived form (fdf) in the forests of the Himalaya, India is morphologically intermediate between normal and synanthropic derived forms. However, the occurrence of the synanthropic derived form of C. megacephala has not been documented in the State of Tamil Nadu, India.

In this context, a report for the first time for C. megacephala (sdf) from Royapuram fishing harbour, Chennai, Tamil Nadu, South East India is significant. A colony of C. megacephala was established from numerous second and third instar larvae collected from decaying fishes. The life expectancy of this fly is 40-45 days. Freshly emerged adults from pupae were identified through morphological and molecular studies.


'/>"/>
Contact: Dr. S. Janarthanan
janas_09@yahoo.co.in
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. How does working part-time versus working full-time affect breastfeeding goals?
2. New statement on PEG feeding tubes in children published by Journal of Pediatric Gastroenterology
3. BMC awarded W.K. Kellogg grant to increase breastfeeding rates in several southern states
4. Canadian physicians lack knowledge and confidence about breastfeeding
5. Proof that antidepressants and breastfeeding can mix
6. Feeding gut microbiota: Nutrition & probiotics are key factors for digestive health
7. Breast-feeding benefits appear to be overstated, according to study of siblings
8. New study shows a genetic link between feeding behavior and animal dispersal
9. Study finds potential solution for feeding, swallowing difficulties in children with autism
10. In-hospital formula use deters breastfeeding
11. Neighbor-plants determine insects feeding choices
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Dead body feeding larvae useful in forensic investigations
(Date:5/24/2016)... Ampronix facilitates superior patient care by providing unparalleled technology to leaders of ... the latest premium product recently added to the range of products distributed by Ampronix. ... ... ... Medical Display- Ampronix News ...
(Date:5/9/2016)... 9, 2016 Elevay is currently ... expanding freedom for high net worth professionals seeking travel ... globally connected world, there is still no substitute for ... duplicate sealing your deal with a firm handshake. This ... taking advantage of citizenship via investment programs like those ...
(Date:4/26/2016)... LONDON , April 26, 2016 ... EdgeVerve Systems, a product subsidiary of Infosys (NYSE: ... a partnership to integrate the Onegini mobile security ... (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) The ... enhanced security to access and transact across channels. ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... the release of its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” ... and retention in this eBook by providing practical tips, tools, and strategies for ...
(Date:6/23/2016)... SILVER SPRING, Md. , June 23, 2016 ... evidence collected from the crime scene to track the criminal ... sick, and the U.S. Food and Drug Administration (FDA) uses ... Sound far-fetched? It,s not. ... whole genome sequencing to support investigations of foodborne illnesses. Put ...
(Date:6/23/2016)... June, 23, 2016  The Biodesign Challenge (BDC), a ... ways to harness living systems and biotechnology, announced its ... in New York City . ... students, showcased projects at MoMA,s Celeste Bartos Theater during ... , MoMA,s senior curator of architecture and design, and ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
Breaking Biology Technology: