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
Chile
Aug 5, 03:30 (GMT + 9):
Southern hake ban awareness campaign begins
United States
Aug 5, 03:00 (GMT + 9):
Lobster price keeps in a growing trend
United States
Aug 5, 02:30 (GMT + 9):
IN BRIEF - US Renews Nigeria’s Certification for Fisheries Export
Canada
Aug 5, 02:30 (GMT + 9):
IN BRIEF - Hot weather blamed for rash of shellfish-related illnesses
United Kingdom
Aug 5, 02:30 (GMT + 9):
IN BRIEF - Shellfish shampoo... Scientists' solution to split ends
Pakistan
Aug 5, 02:30 (GMT + 9):
IN BRIEF - `Pakistan's fishermen to be freed after nationality confirmation'
United States
Aug 5, 02:20 (GMT + 9):
IN BRIEF - Vincent’s Seafood, The Oldest Restaurant in Dallas, is Closed
United Kingdom
Aug 5, 02:20 (GMT + 9):
IN BRIEF - Aquarium gets fish conservation award - for the ones that get eaten in its cafe
Australia
Aug 5, 02:20 (GMT + 9):
IN BRIEF - Bright future for WA aquaculture
United States
Aug 5, 02:20 (GMT + 9):
IN BRIEF - Shrimp season interruption, low prices make tough year
United Kingdom
Aug 5, 02:20 (GMT + 9):
'Super-algae' for oil production identified
Spain
Aug 5, 01:50 (GMT + 9):
Tinamenor presents voluntary creditors’ meeting
Norway
Aug 5, 01:40 (GMT + 9):
IN BRIEF - Cermaq Group AS: Cermaq ranked #1 for its sustainability report
Canada
Aug 5, 01:40 (GMT + 9):
IN BRIEF - Clearwater reports strong second quarter results and positive outlook for 2015
Zambia
Aug 5, 01:00 (GMT + 9):
Tilapia producer to invest USD 6 million in new feed plant



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Senate recommends new act to improve aquaculture
Canada A report released by a Senate Committe, intended to make recommendations for boosting aquaculture in the country, has been welcomed by seafood farmers and other stakeholders in the sector.
Spanish association demands ensuring fair competition in canned tuna market
European Union ANFACO-CECOPESCA welcomes the effective fight that Spain is pursuing in order to eradicate illegal, unreported and unregulated fishing, but it argues that these actions should be steady at EU level.
More countries committing to combat IUU fishing
Worldwide A growing number of countries are ratifying an international agreement to combat illegal fishing, fueling interest in how best to implement the instrument.
MPA considers association with major environmental NGO
Brazil One of the main issues discussed by the Minister for Fisheries and Aquaculture with representatives of The Nature Conservancy was how to develop fish farming in the Amazon region, and at the same time avoid the pressure of deforestation, particularly in the region of Xingu.
 
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-
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 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 - 2015 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER