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


There is hope for some species that were overexploited if fish limits are respected. (Photo Credit: Helene Petit/WWF)

Some depleted stocks still can recover, others can not

Click on the flag for more information about United States UNITED STATES
Monday, April 22, 2013, 04:00 (GMT + 9)

A new study by Rutgers University shows that fish species that have been overfished for decades can be brought back to health more easily than originally thought, once limits are placed on fishing.

Marine scientists reported that a fish stock’s ability to recover from overfishing is enhanced even if it has been moderately overexploited for decades, possibly allowing for a quick recovery if sensible catch limits are enforced.

Philipp Neubauer, a postdoctoral scholar, and Olaf Jensen, an assistant professor of marine and coastal sciences, claim the key is in the adaptation of fish to overfishing. They hypothesize that many overfished species have adapted to being so and mature at a younger age, letting them recover relatively quickly if limits are put on fishing to give the stock time to rebuild.

The results were published recently in the magazine Science.

“Recovery of overexploited marine populations would be a ‘win-win’ for fisheries and conservation, easing pressure on wild populations and associated ecosystems, and ultimately enhancing catches, revenues and food security,” Neubauer and Jensen wrote.

Neubauer used to think that decades of overfishing would be too much for a fish population and mean a slow recovery once fishing pressure was reduced.

“My hypothesis, based on prior studies, was that marine stocks that had been overexploited for a long time would have a harder time coming back,” he said. “So this was a bit of a surprise.”

Neubauer, Jensen and colleagues examined 153 fish and invertebrate stocks across the oceans that had withered to less than 50 per cent of their maximum sustainable yield, and used all available data from fisheries managers around the world.

“We actually used a statistical method borrowed from medicine, called survival analysis,” Neubauer said. “What medical researchers do is look at how long it takes, under a particular treatment, to recover from a disease. We looked at fish stocks as if they were patients undergoing treatment and examined the data to determine how long it would take each stock to recover.”

Conversely, the bad news is that species which has been overfished intensely for a short time have a much more difficult time rebounding, and this may also be the cause for fish that reproduce slowly and have been severely overfished, such as Atlantic halibut.

Jensen and Neubauer said that fisheries managers must recognize overexploitation early and put effective limits on the catch for a stock to be able to recover.

Jeff Hutchings, a professor of biology at Dalhousie University and one of the authors of the study, explained that recovery is fairly unlikely now for depleted cod stocks because Canadian fisheries managers did not react soon enough. In Canada, the federal government must set a population threshold to determine when action must be taken to ease fishing on a fishery so that depleted stocks can recover as they have in the US, The Canadian Press reports.

By Natalia Real
[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United Kingdom
Jan 20, 09:30 (GMT + 9):
IN BRIEF - A Lack Of Big Data Is Hampering Efforts To Curb Illegal Fishing In Africa
Canada
Jan 20, 09:00 (GMT + 9):
IN BRIEF - Atlantic Fisheries Fund provides over $640,000 to fishing enterprises
United States
Jan 20, 02:10 (GMT + 9):
KnipBio moves towards commercial production of single cell protein
Iceland
Jan 20, 01:40 (GMT + 9):
Icelandic blue whiting fishery receives MSC certification
Argentina
Jan 20, 01:30 (GMT + 9):
Good start for squid season
Brazil
Jan 20, 00:10 (GMT + 9):
Government and companies discuss resumption of seafood exports to EU
Seychelles
Jan 19, 23:50 (GMT + 9):
New measures taken to control yellowfin tuna catches
Viet Nam
Jan 19, 23:00 (GMT + 9):
IN BRIEF - Aquaculture export looks to set new record
Ghana
Jan 19, 23:00 (GMT + 9):
IN BRIEF - Fisheries Ministry to launch Aquaculture for Food and Jobs Programme
Mexico
Jan 19, 22:50 (GMT + 9):
Growth of seafood consumption generates new marketing spaces
Australia
Jan 19, 22:10 (GMT + 9):
Huon launches protocol to recover escaped yellowtail kingfish
Canada
Jan 19, 22:00 (GMT + 9):
in brief - N.S. fisheries minister dismisses critics of Cooke Aquaculture
Spain
Jan 19, 21:20 (GMT + 9):
Murcia seeks to obtain sustainable seal for shrimp and transparent goby
New Zealand
Jan 19, 03:00 (GMT + 9):
Minister rejects industry request on footage exempt
Australia
Jan 19, 02:30 (GMT + 9):
Krill sound could help estimate its abundance



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Blue Harvest Fisheries will have new President and CEO
United States Blue Harvest Fisheries announced that its President and CEO, Jeff Davis, will retire this month.
Spain and Portugal defend recovery plan for Iberian sardine
Spain Fisheries authorities from Spain and Portugal participated in a technical meeting with the services of the European Commission, to explain in detail the proposal of a multi-year management plan for the recovery of Iberian sardine prepared by both countries.
Minister rejects industry request on footage exempt
New Zealand Fisheries Minister Stuart Nash is committed to achieve transparency in the fisheries management system, so he discarded a request from the fishing industry to exempt footage collected on boats, as the Official Information Act requires.
Hispano-Moroccan Commission disagrees on possible invalidity of EU-Morocco fisheries agreement
Spain The Hispano-Moroccan Mixed Commission of Fisheries Professionals has expressed its disagreement with the conclusions of a legal advisor to the Court of Justice of the EU, Melchior Wathelet on the legal validity of the fisheries agreement between the EU and Morocco.
 
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 - 2018 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER