Navigation Links
Sardines and horse mackerel identified using forensic techniques

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
FECYT - Spanish Foundation for Science and Technology

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:
(Date:11/18/2015)... November 18, 2015 --> ... a new market report titled  Gesture Recognition Market - ... 2015 - 2021. According to the report, the global gesture recognition ... anticipated to reach US$29.1 bn by 2021, at a ... North America dominated the global gesture ...
(Date:11/17/2015)... LIVERMORE, Calif. , Nov. 17, 2015  Vigilant ... has joined its Board of Directors. ... Vigilant,s Board after recently retiring from the partnership at ... owning 107 companies with over $140 Billion in revenue.  ... performance improvement across all the TPG companies, from 1997 ...
(Date:11/12/2015)... , Nov. 12, 2015  A golden retriever ... Duchenne muscular dystrophy (DMD) has provided a new lead ... Children,s Hospital, the Broad Institute of MIT and Harvard ... Brazil . Cell, pinpoints ... dogs "escape" the disease,s effects. The Boston Children,s lab ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... LAVAL, QC , Nov. 24, 2015 /CNW Telbec/ - ... the "Corporation") announced today that Mr. Pierre Laurin , ... a corporate presentation at the upcoming Piper Jaffray 27 th ... York Palace Hotel, on December 1-2, 2015. ... be available for one-on-one meetings throughout the day. The presentation ...
(Date:11/24/2015)... -- PDL BioPharma, Inc. (PDL) (NASDAQ: PDLI ) today announced ... chief executive officer, will present at the 27 th ... New York City . The presentation will be webcast ... 9:30 a.m. EST. and go to ... 15 minutes prior to the presentation to allow for any ...
(Date:11/24/2015)... According to two new studies, fewer men are ... that many doctors, scientists, and public health experts have been ... PSA tests being done, will there be more men dying ... Samadi, "Despite the efforts made in regards to early ... cancer cause of death in men, killing approximately 27,500 men ...
(Date:11/23/2015)... Cord Blood Corporation (NYSE: CO ) ("CCBC" or ... laboratory testing, hematopoietic stem cell processing, and stem cell ... for the second quarter and first half of fiscal ... --> --> Second Quarter of Fiscal ... of fiscal 2016 increased by 12.7% to RMB171.5 million ...
Breaking Biology Technology: