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


 Print


Click to know how to advertise in FIS
MORE NEWS
Peru
Oct 2, 03:50 (GMT + 9):
Fishing regulation did not benefit the sector or anchovies, warns economist
New Zealand
Oct 2, 03:10 (GMT + 9):
Sealord makes 150 workers redundant
Australia
Oct 2, 02:10 (GMT + 9):
Rock lobster fishery trials digital record keeping system
United States
Oct 2, 01:50 (GMT + 9):
Seafood labelling bill vetoed in California
United Kingdom
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Fish catch advice
United Kingdom
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Objection filed to proposed MSC certification of the SSLLC US North Atlantic swordfish longline fishery
New Zealand
Oct 2, 01:40 (GMT + 9):
IN BRIEF - SeaDragon strengthens leadership team
European Union
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Trade deal with Ecuador to secure jobs in Europe’s fish processing industry
United States
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Masses of dead jellyfish in Alaska waters not unusual, says NOAA scientist
India
Oct 2, 01:40 (GMT + 9):
IN BRIEF - SGPDA plans to redevelop wholesale fish market
Canada
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Study shows ‘alarming levels’ of toxics in Columbia River fish
Canada
Oct 2, 01:40 (GMT + 9):
IN BRIEF - Algae kills 280K farmed fish
Cape Verde
Oct 2, 01:40 (GMT + 9):
IN BRIEF - PEIFA wants aquaculture lease moratorium maintained
Ecuador
Oct 2, 01:20 (GMT + 9):
Legal review of agreement with EU would end in two months
Canada
Oct 2, 00:10 (GMT + 9):
Marine Harvest loses 280K salmon due to algae bloom



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Aid requested for fleet expelled from Mauritania and longliners in the Mediterranean
Spain The Spanish Fisheries Confederation requested the General Secretariat of Fisheries a prompt release of a ministerial order regulating aid for the temporary cessation of the fleet affected by Mauritania's decision to expel most of the Spanish vessels from its fishing ground.
Study finds high level of seafood fraud among Danish fishmongers
Denmark A new study conducted by Oceana, a Danish newspaper, and a TV programme found that there is a high level of sea fraud in Danish markets.
Shrimp eyes help cancer detection
Australia Mantis shrimp eyes are inspiring the design of new cameras that can detect a variety of cancers and visualise brain activity.
Iglo Group reported flat sales in Q2
United Kingdom Europe’s leading frozen foods business Iglo Group reported net flat sales year-on-year for the second quarter this year.
 
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 (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Pescanova, S.A. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Limited
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 ehf - 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-
Grupo Calvo - Luis Calvo Sanz, S.A. (Group 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. -Headquarter-
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
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 - 2014 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER