Navigation Links
Sardines and horse mackerel identified using forensic techniques
Date:5/24/2011

A team of researchers from Galicia in Spain have used forensic mitochondrial DNA species identification techniques to distinguish between sardines and horse mackerel. This method makes it possible to genetically differentiate between the fish, even if they are canned or processed, which makes it easier to monitor the degree to which fisheries resources are being exploited.

DNA from the mitochondria cell organelles is ideal for distinguishing between species. One of its components in particular, cytochrome b, is a genetic marker that scientists use to establish relationships between genera and families, and is also used by some forensic laboratories to identify animals that appear at crime scenes (cats or insects, for example).

Now, for the first time, researchers from the National Association of Manufacturers of Canned Fish and Shellfish (ANFACO-CECOPESCA, Spain) have used this technique in order to genetically identify small pelagic (non-coastal) species, such as sardines and horse mackerel. This study was supported by the European Fisheries Fund (EFF) and Spain's Ministry of the Environment and Rural and Marine Affairs (MARM).

"These molecular tools represent a great step forward for the sector, since they enable fisheries imports to be monitored and tracked, and also ensure they are correctly labelled", Montserrat Espieira, a biologist for ANFACO-CECOPESCA and lead researcher of the study, tells SINC.

By using this method, the team was able to identify more than 20 species from the sardine group (genera such as Sardina, Sardinella, Clupea, Ophistonoma and Ilisha) and a similar number of horse mackerel species (Trachurus, Caranx, Mullus, Rastrelliger and others), originating from seas all over the world.

The methodology involved gathering a sample of mitochondrial DNA from the fish (even if it was canned or processed), amplifying a fragment of cytochrome b (using a polymerase chain reaction PCR) and, lastly, carrying out a phylogenetic analysis by obtaining a "forensically informative nucleotide sequencing" (FINS).

The research on the sardines was published this month in the journal European Food Research and Technology, while the one on the horse mackerel was issued in March in the Journal of Agricultural and Food Chemistry.

The researchers are now focusing on analysing the distinct organoleptic, microbiological, physical-chemical and nutritional properties of the species analysed, and are also looking into whether some currently unexploited species could be of interest from a consumer perspective. "The end goal is to improve the management of fisheries resources and ensure they are sustainably exploited", explains Espieira.

The team is also developing rapid molecular identification methodologies (based on the Real Time-PCR technique), which will make it possible to distinguish between the most commercially-valuable small pelagic fish species the European anchovy (Engraulis encrasicolus), the European sardine (Sardina pilchardus) and the main species of horse mackerel (Trachurus trachurus) simply and in less than three hours.


'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert

Related biology news :

1. Horse blind date could lead to loss of foal
2. Canadian researchers first worldwide to generate pluripotent stem cells from horses
3. Sleeping Trojan horse to aid imaging of diseased cells
4. Trojan Horse ploy to sneak protective drug into brains of stroke patients
5. Climate change affects horseshoe crab numbers
6. Training the trainers: How to minimize stress when horses are first ridden
7. Would a molecular horse trot, pace or glide across a surface?
8. Climate change implicated in decline of horseshoe crabs
9. Trojan Horse attack on native lupine
10. Research develops simple recipe for fungus-free horseradish
11. Mutant gene link to West Nile virus in horses
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/28/2017)... , February 28, 2017 News solutions ... ... Amsterdam from 14 to 16 March, Materna will ... and show how seamless travel is a real benefit for passengers. ... added biometrics to their passenger touch point solutions to take passengers ...
(Date:2/26/2017)... 25, 2017  Securus Technologies, a leading provider ... public safety, investigation, corrections and monitoring, announces the ... "Too often, too many offenders return ... jails are trying to tackle this ongoing problem ... and family members. While significant steps are underway, Securus ...
(Date:2/21/2017)... PORTLAND, Ore. , Feb. 22, 2017  IBM ... Companies (Avamere Health Services, Infinity Rehab, Signature Hospice, Home ... that will apply the power of IBM cognitive computing ... health centers. By analyzing data streaming from sensors in ... physical and environmental conditions, and obtain deeper learnings into ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... Sinovac Biotech Ltd. ("Sinovac" or the "Company") (NASDAQ: SVA), ... , today announced that its board of directors has amended its ... from March 27, 2017 to March 27, 2018. The amendment was not ... Biotech Ltd. ... Sinovac Biotech Ltd. is a China -based ...
(Date:3/23/2017)... ... 23, 2017 , ... AxioMed president, Jake Lubinski, describes the ... when deformed, which is identical to how the human discs work to distribute ... return to its natural state along a hysteresis curve, exactly like a healthy ...
(Date:3/23/2017)... 2017  SeraCare Life Sciences, Inc., a manufacturer ... diagnostics manufacturers and clinical laboratories, is announcing ... Inherited Cancer reference material for ... sequencing (NGS). The Seraseqâ„¢ Inherited Cancer DNA Mix ... industry experts to validate the ability of ...
(Date:3/23/2017)... , March 23, 2017 Kineta, ... development of novel therapies in immuno-oncology, today announced ... lead" small molecule compounds that activate interferon response ... pathways and demonstrate immune-mediated tumor regression in a ... the study who demonstrated complete tumor regression to ...
Breaking Biology Technology: