Welcome to FIS   Sponsored By
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


European eel, Anguilla anguilla. (Photo: David Curnick)

An 'internal GPS' would guide eels in their migration to European rivers

Click on the flag for more information about United States UNITED STATES
Friday, April 21, 2017, 02:30 (GMT + 9)

National Oceanic and Atmospheric Administration (NOAA) scientists have discovered that European eels have a sort of internal GPS or global positioning system tuned to the Earth’s magnetic field, which they use as a map to orient themselves during their long ocean journeys.

Born in the Sargasso Sea, that Atlantic Ocean gyre east of Bermuda, this specimen will travel 4,000 miles to the freshwater rivers of Europe.

The researchers of this new study on European eels theorize the American eel might also tune into the magnetic field to assist its migration.

Almost indistinguishable from the European eel, the American eel is also born in the Sargasso Sea. It makes a similar long-distance migration to North American freshwater rivers.

The findings may help improve management of this commercially and culturally important species of eel, as well as similar species, such as the American and Japanese eel. All these eel populations are considered depleted due to fishing pressure, loss of habitat because of dams that block their passage, pollution and changes in ocean conditions.

An international team of scientists who joined Nathan Putman, a post-doctoral researcher at Oregon State University, in his research work, tested the European eels’ mapping skills by exposing juveniles in a laboratory to a series of magnetic fields that mirrored the various magnetic conditions found along the eels’ migration route.

In this way, the scientists found that eels’ orientation differed depending upon the magnetic conditions, but in each case, the eels headed into what would have been the Gulf Stream – a powerful current that is thought to propel young eels from the Sargasso Sea toward Europe.

European, Japanese, and American eels have been fished for centuries to support valuable commercial, recreational and subsistence fisheries.

Juvenile eels just entering freshwater can fetch staggering prices – in some years more than USD 2,000 per pound for eels caught in Maine.

In 2014, total US commercial eel landings were valued at approximately USD 9.8 million.

Putman’s earlier research showed many marine animals, such as Pacific salmon and sea turtles, use Earth’s magnetic field as a large-scale map. By learning what environmental cues animals use to guide their movements, scientists can better predict changes in their migratory routes and distribution.

More research is likely to also contribute to better management of other valuable fisheries for migratory species such as tunas, sailfish, swordfish and sharks.
 
[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United Kingdom
Nov 21, 04:00 (GMT + 9):
Senior MPs urge the Marine Stewardship Council to review Standard
Ecuador
Nov 21, 00:40 (GMT + 9):
BioMar appoints new General Manager
Malaysia
Nov 21, 00:30 (GMT + 9):
Cockle farm project helps Selangor fishermen diversify income
South Africa
Nov 21, 00:00 (GMT + 9):
Oceana impacted by stronger rand, lower prices
Spain
Nov 20, 22:50 (GMT + 9):
90pct of Valencian fishing boats comply with regulations
Peru
Nov 20, 22:00 (GMT + 9):
Marine ingredients support global aquaculture vertiginous growth
Barbados
Nov 20, 21:30 (GMT + 9):
54pct of Caribbean species continue overfished or fully exploited
New Zealand
Nov 20, 20:40 (GMT + 9):
Kaikōura coast fishery ban extended
United States
Nov 20, 20:10 (GMT + 9):
Fisheries Commission supports Omega Protein’s Atlantic menhaden claim
Mexico
Nov 20, 19:50 (GMT + 9):
Totoaba could have a promising future with aquaculture
United States
Nov 20, 12:00 (GMT + 9):
Scientists hope smart phone app yields clues in shrimp study
India
Nov 20, 05:20 (GMT + 9):
‘Chilika Fresh’ & ‘Fish On Wheels’ Promise Fresh Fish In Bhubaneswar
United Arab Emirates
Nov 20, 04:00 (GMT + 9):
Emirates SkyCargo to boost e-commerce shipments including fresh fish
Canada
Nov 18, 02:20 (GMT + 9):
Pension plan buys Atlantic Aqua Farms mussel producer
Morocco
Nov 18, 01:30 (GMT + 9):
Spain intends to achieve greatest possible increase for bluefin tuna TAC



Lenguaje
FEATURED EVENTS
  
TOP STORIES
50-80pct of fish in Pacific Islands could disappear due to climate change
Canada Many Pacific Island nations will lose from 50 to 80 per cent of marine species in their waters by the end of the 21st century if climate change continues unchecked, warn the authors of a new Nippon Foundation-Nereus Program study.
Galicia and Wales will sign an agreement to minimize 'Brexit' impact
Spain Galicia and Wales intend to sign their own bilateral agreement to try to minimize the impact that Brexit will have and avoid damage to the fishing sector.
Spain intends to achieve greatest possible increase for bluefin tuna TAC
Morocco The General Secretary of Fisheries of Spain participates in the negotiations of the 25th ordinary session of the International Commission for the Conservation of Atlantic Tunas, which takes place in Marrakech from November 14 to 22.
AZTI to analyze climate change effects in four important Spanish fisheries
Spain Setting the effects of climate change on the fisheries of Spanish fleets is the aim of a project developed by AZTI until June 2018.
 
Maruha Nichiro Corporation
Nichirei Corporation -Headquarter-
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation -Wartsila Group Headquarter-
ITOCHU Corporation -Headquarter-
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
Blue Continent Products (Pty) Ltd - (Oceana Group Limited)
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods Inc. -Headquarter-
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO -Food and Agriculture Organization- Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Omega Protein Corporation -Headquarter-
Marona S.A.
Marine Harvest ASA - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation -Headquarter-
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart / Wal-Mart Stores, Inc. (Supermarket) -Headquarter-
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
INVE Group - Head Office
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
Morpol ASA - Group Headquarters
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2017 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER