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


Shark in the Pacific deep waters. (Photo: NOAA)

Bottom trawling captures prove 42pct higher than informed, new study

Click on the flag for more information about Canada CANADA
Saturday, April 14, 2018, 00:40 (GMT + 9)

A total of 25 million tonnes of fish living 400 metres or more below sea level have been caught using giant fish trawling nets for the last six decades, leading to the collapse of many of those fish populations, a new report points out.

This study, based on the capture data during the period from 1950 to 2015, recosntructed by the  Sea Around Us project, also reveals that 42 per cent more fish have been caught by countries than they reported to the Food and Agriculture Organization of the United Nations (FAO).

“Our study shows that there is systematic under-reporting of the real catch. This means that fisheries managers are making decisions based on incorrect data, which has dramatic consequences for marine ecosystems,” said Lissette Victorero, lead author of the paper and a Ph.D. student at the National Oceanography Centre in the United Kingdom.

The study examines the state of 72 deep-sea fish species caught by bottom trawlers around the world, many of which were exploited to unsustainable levels.

One example presented in the analysis is that of the roundnose grenadier, whose estimated catches were greater than 60,000 tonnes in 2001 in the Northeastern Atlantic, but the stock was overfished so fast that a moratorium had to be imposed in 2006 in Norwegian waters.

“One of the reasons behind this collapse is the fact that trawls are not selective, that is, they catch everything and anything, which means that young grenadiers that have not yet reached full reproductive development are caught along with adult grenadiers, decreasing the ability of the population to recover,” said Deng Palomares, co-author of the study and the Sea Around Us Project Manager at the University of British Columbia.

In this regard, the researcher explains that most of the fisheries analyzed lasted for less than a decade or two decades tops because deep-sea fish generally have low fecundity, grow very slowly and live around the seamounts and ridges that are razed to the ground by trawls.

Besides depleting the stocks, bottom trawling of deep fish does not generate much in the way of marketable fish. Immature individuals are thrown overboard because they generally don’t meet minimum size requirements, while non-targeted species caught as bycatch are also returned dead to the sea.

The new estimates presented by the researchers suggest that 6 million tonnes of fish were discarded over the study period while deep-sea fisheries only contributed 0.5 per cent of total fisheries landings.

“This means that globally their economic importance is trivial,” the paper states. The need to keep the business going despite its financial unviability drives fleets to continuously look for new species to fish, particularly once they have fished out a stock or are subjected to new regulations.

“So what we are seeing is a cycle in which trawlers start targeting fish that they were already dragging up as bycatch. They create new markets for them until they also exhaust the stock with regulations lagging behind,” the lead author explained.

The researchers involved in the study state that impact of trawling goes beyond the capture of fish populations. As they are dragged on the seabed, trawls remove sponges, corals, sea stars, sea cucumbers, and anemones, all of which play important roles as food source or habitat for fish. They also destroy seamounts and other fish homes, turning former thriving habitats into large cleared areas.

“Much more biomass of fish and habitat-forming species has been removed from the deep-sea than we thought. This has altered the ecosystem in ways that we have yet to understand,” Palomares concluded.

The study findings were published in Frontiers in Marine Science.

 
[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
South Africa
Apr 26, 02:50 (GMT + 9):
Sea Harvest getting closer to buy Viking Fishing assets
European Union
Apr 26, 02:30 (GMT + 9):
Spanish tuna fleet proposes the EC to implement its standard for fish imports
Belgium
Apr 26, 02:20 (GMT + 9):
New organisation to address gaps in aquaculture and fisheries certification
Spain
Apr 26, 01:40 (GMT + 9):
MARE to monitor bivalve mollusk production areas in Cantabria
Thailand
Apr 26, 01:20 (GMT + 9):
Thai Union increases stake in aquaculture feed subsidiary
Belgium
Apr 26, 01:00 (GMT + 9):
IN BRIEF - SFP announces new octopus FIP in Mauritania
China
Apr 26, 00:10 (GMT + 9):
JD.com commits to supplying BAP certified aquaculture products
Spain
Apr 25, 23:40 (GMT + 9):
Galicia would lose EUR 533 million if its fleet stops operating in Gran Sol
Chile
Apr 25, 23:30 (GMT + 9):
BioMar starts its R&D second year in ATC Patagonia
Spain
Apr 25, 22:40 (GMT + 9):
European project to contribute to European eel and habitat recovery
United Kingdom
Apr 25, 22:30 (GMT + 9):
IN BRIEF - Hard Brexit would mean more and cheaper British fish – but there's a catch
United Kingdom
Apr 25, 22:00 (GMT + 9):
IN BRIEF - Post-Brexit hygiene checks will leave British fishermen all at sea
United States
Apr 25, 22:00 (GMT + 9):
IN BRIEF - Baby eel fishermen on track to catch quota after short years
United States
Apr 25, 22:00 (GMT + 9):
IN BRIEF - Study traces IHNV virus in salmon
Canada
Apr 25, 22:00 (GMT + 9):
IN BRIEF - Four P.E.I. projects receive Atlantic salmon funding worth over CAD 99,000



Lenguaje
FEATURED EVENTS
  
TOP STORIES
UK fishing firm to appeal against South Atlantic fishing licence decision
United States The High Court determines that a British firm will be able to appeal a controversial decision of the UK Government to hand lucrative fishing licences in the South Atlantic to foreign firms.
Taiwanese fishermen argue EU imposes stricter rules due to protectionism
Taiwan Local fishermen have expressed complaints about the requirements imposed by the European Union on Taiwanese fisheries, which, in their view, are unreasonable.
Over 100 kilos of eels destined to Hong Kong intercepted
Spain The Civil Guard conducted another seizure of eels that were to be illegally marketed. This time there were 113 kilos of elvers intercepted at Barajas Airport that were destined for Hong Kong.
New attempt to unlock shrimp entry to Brazil
Argentina An Argentine delegation visited Brazil with the purpose of progressing in the negotiations for the Argentine shrimp to be commercialized again in the Brazilian market.
 
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 | Headquarters
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