Welcome to FIS   Sponsored By
United States
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.
 
editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Republic of Ireland
Apr 25, 03:10 (GMT + 9):
China reopens market to live Irish crab
Australia
Apr 25, 02:40 (GMT + 9):
Tassal’s statements on Macquarie improvements sound unconvincing to authorities
Japan
Apr 25, 01:50 (GMT + 9):
Environmentalists accuse Japan of not abiding by bluefin tuna catch quotas
India
Apr 25, 01:30 (GMT + 9):
IN BRIEF - Major reforms on cards in fish sale and auction sector
Spain
Apr 25, 01:20 (GMT + 9):
Microplastics dumped on Atlantic shores reach the Arctic
China
Apr 25, 01:00 (GMT + 9):
IN BRIEF - China and Norway sign agreement on food imports, exports
United States
Apr 25, 01:00 (GMT + 9):
IN BRIEF - Progress Made Towards Sustainable Tuna Fishing
Philippines
Apr 25, 01:00 (GMT + 9):
IN BRIEF - Group pushing commercial fishing limits
Uganda
Apr 25, 01:00 (GMT + 9):
IN BRIEF - Fishermen Accuse Government of Aiding Illegal Fishing
United Kingdom
Apr 25, 01:00 (GMT + 9):
IN BRIEF - US warning over continued killing of seals by Scots fish farms
Australia
Apr 25, 01:00 (GMT + 9):
IN BRIEF - Qantas considers compensation to fishers after toxic spill, food risk still unknown
Australia
Apr 25, 01:00 (GMT + 9):
IN BRIEF - Salmon giant Tassal cuts short press conference on 'dead zones' near World Heritage Area
Hungary
Apr 25, 00:40 (GMT + 9):
Lower VAT on fish could benefit aquaculture
Malaysia
Apr 25, 00:00 (GMT + 9):
IN BRIEF - Government aims to increase fishermen's income to MYR 5,000 a month
Australia
Apr 25, 00:00 (GMT + 9):
IN BRIEF - Salmon farming giant Tassal says standardised regulation of all state aquaculture leases is needed



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Andalusia claims Mediterranean trawling fleet stoppage change
Spain The Undersecretary of Agriculture, Fisheries and Rural Development of Andalusia has asked the Ministry of Agriculture and Fisheries, Food and the Environment to transfer to the month of October the stoppage of the Mediterranean trawling fleet scheduled for April.
An 'internal GPS' would guide eels in their migration to European rivers
United States 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.
Producers and restoration industry disagree on Ecuadorian shrimp import
Brazil The Brazilian Association of Bars and Restaurants has addressed the complaints of the Brazilian shrimp sector regarding the release of Ecuadorian "headless, peeled and frozen" shrimp imports for human consumption.
Greenseas ranks last in Greenpeace’s canned tuna brand list
Australia Greenpeace states that the Australian tuna brand Greenseas continues using capture destructive practices to attract large numbers of many species of fish and threaten sharks and sea turtles.
 
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
Nueva Pescanova, S.L. - Group 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.
Food Project (Siam) Co., 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  -Holding Headquarter-
Greenpeace International - The Netherlands
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
Ocean Trawlers Group - Ocean Trawlers HK Ltd.
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