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:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/5/2017)... -- The Allen Institute for Cell Science today announces the ... and dynamic digital window into the human cell. The ... of deep learning to create predictive models of cell ... growing suite of powerful tools. The Allen Cell Explorer ... available resources created and shared by the Allen Institute ...
(Date:3/30/2017)... -- On April 6-7, 2017, Sequencing.com will host the world,s ... at Microsoft,s headquarters in Redmond, Washington ... health and wellness apps that provide a unique, personalized ... is the first hackathon for personal genomics and the ... the genomics, tech and health industries are sending teams ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... ... May 24, 2017 , ... Patient Monitoring ... with Wi-Fi connectivity to reduce the amount of wiring in a healthcare facility ... compact mobile devices including infusion pumps, heart and hypertension monitoring, glucose monitoring, and ...
(Date:5/23/2017)... ... May 23, 2017 , ... Firmex ... solution that makes it easy for organizations to send and gather large files ... FTP software or email file size limitations. , Using the same market-tested ...
(Date:5/23/2017)... , ... May 23, 2017 ... ... an unlimited source of human cardiovascular cells for research and the development ... makes it possible to generate large numbers of cardiomyocytes (hPSC-CMs). Due to ...
(Date:5/23/2017)... ... May 22, 2017 , ... NetDimensions has been ... Aragon Research Globe™ for Corporate Learning, 2017. , Aragon Research defines Leaders as ... and effectively perform against those strategies. NetDimensions’ ranking as a Leader due to ...
Breaking Biology Technology: