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:4/13/2016)... 13, 2016  IMPOWER physicians supporting Medicaid patients in ... new clinical standard in telehealth thanks to a new ... higi platform, IMPOWER patients can routinely track key health ... mass index, and, when they opt in, share them ... to a local retail location at no cost. By ...
(Date:3/29/2016)... 29, 2016 LegacyXChange, Inc. (OTC: ... and SelectaDNA/CSI Protect are pleased to announce our successful ... a variety of writing instruments, ensuring athletes signatures against ... collectibles from athletes on LegacyXChange will be assured of ... DNA. Bill Bollander , CEO states, ...
(Date:3/22/2016)... and SANDY, Utah , ... which operates the highest sample volume laboratory in ... Genomics and UNIConnect, leaders in clinical sequencing informatics and ... launch of a project to establish the informatics infrastructure ... NSO has been contracted by the Ontario ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... --  EpiBiome , a precision microbiome engineering company, today ... from Silicon Valley Bank (SVB). The financing will allow ... drug development efforts, as well as purchase additional lab ... been an incredible strategic partner to us – one ... provide," said Dr. Aeron Tynes Hammack , EpiBiome,s ...
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published ... how a patient who developed lymphedema after being treated for breast cancer benefitted from ... the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
(Date:6/23/2016)... 23, 2016 Andrew ... http://doi.org/10.17925/OHR.2016.12.01.22 Published recently in ... journal from touchONCOLOGY, Andrew D Zelenetz , ... cancer care is placing an increasing burden on ... biologic therapies. With the patents on many biologics ...
(Date:6/23/2016)... Prairie, WI (PRWEB) , ... June 23, 2016 ... ... consultancy focused on quality, regulatory and technical consulting, provides a free webinar ... is presented on July 13, 2016 at 12pm CT at no charge. , ...
Breaking Biology Technology: