us scientists track fish migration using dna
Last Updated : GMT 09:03:51
Almaghrib Today, almaghrib today
Almaghrib Today, almaghrib today
Last Updated : GMT 09:03:51
Almaghrib Today, almaghrib today

In water samples

US scientists track fish migration using DNA

Almaghrib Today, almaghrib today

Almaghrib Today, almaghrib today US scientists track fish migration using DNA

The Hudson River is seen on May 29, 2015 in New York City
Washington - Arab Today

A simple analysis of fish DNA in water drawn from two New York rivers successfully tracked the presence or absence of numerous species during a spring marine migration, according to research published Wednesday.

The inexpensive technique, which can have broad applications in monitoring and protecting aquatic life, was conducted in the East River, which is actually an inlet, and the Hudson River last year.

"By conducting a series of tests over time, collecting surface water from the same point on both the Hudson and East Rivers once a week for six months, we've successfully demonstrated a novel way to record fish migration," said the researchers at New York's Rockefeller University, whose work appeared in the latest issue of scientific journal PLOS One.

The weekly "snapshots" came from water samples filtered to concentrate the DNA left behind by the slimy surface of fish as they swim, or from their droppings. The DNA was then extracted and sequenced, with the results matched against an online public reference library.

The researchers' data largely corresponded to findings from years of migration studies conducted by fishnet trawls, the traditional method of tracking marine migration. This is much more labor intensive, expensive and harmful to fish.

"Environmental DNA" sampling will be an easy way to estimate the population and distribution of fish and other aquatic species in bodies of water from rivers and lakes to seas and oceans, the authors said.

- 'Clear new insight' -

"It amazes me that we can get the same information from a small cup of water and a large net full of fish," said Mark Stoeckle, lead author and senior research associate for the Program for the Human Environment at Rockefeller University.

"Our work also offers clear new insight into the durability of DNA in the water, which persists despite currents and tides with a 'Goldilocks' quality just right for research," he said, telling AFP that experiments carried out in aquariums showed DNA survives for a few days or even a week.

Stoeckle's study was inspired by French scientist Pierre Tabarlet of the University of Grenoble, who was the first to show that small volumes of water contained enough DNA fragments to detect dozens of species of fish.

The New York research obtained DNA from 42 species of fish, including 81 percent of those known to be common to the area, such as herring, striped bass and oyster toadfish -- a flattened brown creature with bulging eyes and a mouthful of teeth.

Uncommon species were also detected, while some DNA came from fish frequently consumed by New Yorkers but not naturally present in the East and Hudson Rivers, such as salmon, tilapia and red snapper.

The researchers determined these latter samples likely entered the water after passing through humans and being discharged in wastewater.

- Future applications -

The eDNA technique could allow researchers to identify endangered species sold in markets and restaurants, said Jesse Ausubel, another Rockefeller University researcher and study co-author.

Next steps involve refining the technology by comparing more eDNA results against the findings from traditional studies carried out with nets and sonar. 

"It is unclear, for example, if 100 DNA 'reads' indicate the presence of one fish or 10 fish," researchers said. 

Ausubel said that stage will take five to 10 years but "the upside potential is just enormous."

"It could easily improve the rationality with which fish quotas are set and the quality and reliability of their monitoring around the world," he said.

For Tony MacDonald, director of the Urban Coast Institute at Monmouth University, the science of eDNA sampling "represents a potentially important advance in our capability to detect, understand and more effectively and efficiently manage fisheries and marine biodiversity."

source: AFP

almaghribtoday
almaghribtoday

GMT 14:04 2018 Sunday ,14 January

Fossil fuels blown away by wind

GMT 18:15 2018 Saturday ,13 January

1.5 C climate goal 'very unlikely' but doable

GMT 12:37 2018 Friday ,12 January

Race to save Indonesian croc stricken

GMT 15:08 2018 Thursday ,11 January

California mudslides death toll reaches 15

GMT 14:06 2018 Wednesday ,10 January

Philippines to protest over China activity

GMT 14:33 2018 Tuesday ,09 January

Poisonous and running out

GMT 16:42 2018 Saturday ,06 January

'World's ugliest pig' spotted

GMT 12:01 2018 Wednesday ,03 January

Hong Kong's mountain warriors
Almaghrib Today, almaghrib today

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

us scientists track fish migration using dna us scientists track fish migration using dna

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

us scientists track fish migration using dna us scientists track fish migration using dna

 



Almaghrib Today, almaghrib today Skincare PR Performance Full Year 2017

GMT 09:22 2018 Monday ,22 January

Skincare PR Performance Full Year 2017
Almaghrib Today, almaghrib today New hunt for flight MH370 gets under way

GMT 11:03 2018 Wednesday ,24 January

New hunt for flight MH370 gets under way
Almaghrib Today, almaghrib today Modern colorful bedroom renovation

GMT 10:57 2017 Thursday ,21 December

Modern colorful bedroom renovation
Almaghrib Today, almaghrib today Puigdemont candidate for Catalan president

GMT 13:56 2018 Tuesday ,23 January

Puigdemont candidate for Catalan president
Almaghrib Today, almaghrib today Turkey detains dozens more

GMT 10:47 2018 Wednesday ,24 January

Turkey detains dozens more
Almaghrib Today, almaghrib today The Rake announces editorial updates

GMT 10:46 2018 Tuesday ,16 January

The Rake announces editorial updates
Almaghrib Today, almaghrib today Europe brings on charm and blue skies

GMT 11:51 2018 Tuesday ,23 January

Europe brings on charm and blue skies
Almaghrib Today, almaghrib today For the Variety of Interior Design Styles

GMT 10:46 2017 Tuesday ,19 December

For the Variety of Interior Design Styles
Almaghrib Today, almaghrib today US Christian tourists see deep meaning

GMT 13:44 2018 Monday ,22 January

US Christian tourists see deep meaning
Almaghrib Today, almaghrib today Amazon to open first cashierless shop

GMT 10:03 2018 Tuesday ,23 January

Amazon to open first cashierless shop

GMT 07:43 2017 Monday ,16 October

'Final phase' of battle for Raqa

GMT 07:58 2011 Monday ,17 October

Chinese stocks close 0.37 pct higher Monday

GMT 13:38 2011 Friday ,11 November

Tips to great skin and hair

GMT 16:57 2017 Tuesday ,24 January

Bahrain condemns attack on market

GMT 19:36 2017 Thursday ,13 April

Despite warning, Assad regime uses barrel bombs

GMT 18:42 2017 Tuesday ,11 April

Muscat Securities Market Loses 29 Points

GMT 11:44 2014 Saturday ,01 November

Arab League council to hold emergency meeting Sunday

GMT 09:21 2011 Monday ,17 October

Tulisa showed on X Factor

GMT 18:08 2017 Tuesday ,17 January

Jordanian Royal Decree Approves Cabinet Reshuffle

GMT 09:07 2011 Sunday ,12 June

Israel to allow limited goods into Gaza

GMT 12:16 2011 Saturday ,18 June

Marilyn Monroe dress stars in Hollywood sale

GMT 13:42 2011 Sunday ,30 October

Watermelon helps reduce atherosclerosis

GMT 21:45 2017 Thursday ,27 April

US dollar exchange rate stable at major banks

GMT 13:20 2018 Monday ,01 January

Lewis Hamilton Instagram account emptied

GMT 22:09 2017 Monday ,24 July

'Dunkirk' captures N. American box office

GMT 02:55 2017 Sunday ,30 April

EU tightens Brexit demands on residence, banks

GMT 10:46 2015 Sunday ,11 January

DWTC to welcome over 130,000 visitors

GMT 06:35 2017 Friday ,15 December

Mennat-Allah underlines importance of landscapes

GMT 15:10 2011 Monday ,20 June

American woman locks horns with \'employer\'
Almaghrib Today, almaghrib today
 
 Almaghrib Today Facebook,almaghrib today facebook  Almaghrib Today Twitter,almaghrib today twitter Almaghrib Today Rss,almaghrib today rss  Almaghrib Today Youtube,almaghrib today youtube  Almaghrib Today Youtube,almaghrib today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

.almaghribtoday .almaghribtoday .almaghribtoday .almaghribtoday
almaghribtoday almaghribtoday almaghribtoday
almaghribtoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
almaghribtoday, Almaghribtoday, Almaghribtoday