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
Spain
Oct 24, 23:50 (GMT + 9):
Spain calls for increased bluefin tuna TAC for EU fleet
Chile
Oct 24, 23:20 (GMT + 9):
Ager acquires PescaChile assets, sets trade agreement with Europacífico
Chile
Oct 24, 23:10 (GMT + 9):
Global Salmon Initiative launches first progress report
India
Oct 24, 22:40 (GMT + 9):
IN BRIEF - India's first fish hospital to come up in Kolkata
South Africa
Oct 24, 22:40 (GMT + 9):
IN BRIEF - Pirates threaten fishing industry
United States
Oct 24, 22:40 (GMT + 9):
IN BRIEF - City faces 'direct hit' in fish losses
Argentina
Oct 24, 22:40 (GMT + 9):
Anchovy and cartilaginous fish management measures defined in Argentine-Uruguay zone
Iceland
Oct 24, 22:30 (GMT + 9):
IN BRIEF - Negotiations on the sale of shares in Stofnfiskur hf.
Australia
Oct 24, 22:30 (GMT + 9):
IN BRIEF - Spencer Gulf prawn fleet helps a new management plan to protect the industry into the future
Canada
Oct 24, 22:20 (GMT + 9):
Top marine scientists call for action on 'invisible' fisheries
Norway
Oct 24, 22:00 (GMT + 9):
IN BRIEF - HAVFISK :Financial calendar for 2015
Norway
Oct 24, 21:50 (GMT + 9):
Salmon price status at week 43
American Samoa
Oct 24, 04:00 (GMT + 9):
Kiribati's decision worries local and American tuna entrepreneurs
Spain
Oct 24, 03:10 (GMT + 9):
France has doubts about Galician mussel
Chile
Oct 24, 02:30 (GMT + 9):
Marine Harvest records increased harvest and operating income



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Shipowners require 'level playing field' for all fleets fishing for sharks
Spain Two organizations of the fishing longlining sector ascribed to the Cooperative of Shipowners of the Port of Vigo demand that Spain and other Member States must require the EC to promote non-shark finning regulations.
Salmon importer joins Japanese giant firm SNG subsidiary
United States The salmon importing and distributing firm SalmonDepot USA has confirmed its merger with SNG UK, Ltd., the European operating branch of Shin Nihon Global.
Kiribati's decision worries local and American tuna entrepreneurs
American Samoa Kiribati's decision to reduce the fishing days in its waters could be devastating for the local community, according to Tuna industry leaders in American Samoa.
Industrial anchovy fishing season opening faces risks
Peru A recent report issued by experts of the Peruvian Marine Institute suggests that this year a second industrial anchovy fishing season may not be allowed around the Peruvian coast.
 
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 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 - 2014 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER