Welcome   Sponsored By
Subscribe | Register | Advertise | Newsletter | About us | Contact us
   


Image: HI/europêche

A new way of measuring fish welfare in wild-capture fisheries

Click on the flag for more information about Norway NORWAY
Monday, January 30, 2023, 08:00 (GMT + 9)

When excessive quantities of mackerel are crowded tightly together in the net, the fish experience poor welfare.

When you fish for mackerel with a seine net, the catch is crowded tightly together in large quantities to make it easier to pump the fish on board the boat. The scientists wanted to find a way to measure how the fish respond to that. Photo: Institute of Marine Research Norway (IMR)

Today, there is little research into animal welfare in fisheries.

It is also a difficult area to research. How do you measure how a fish is coping in a stressful situation?

A new study from the Institute of Marine Research (HI) shows that fish vitality is a good measure of welfare.

The marine scientists found this out by combining several practical investigations.

The mackerel is crowded together in large quantities

"When fishing for mackerel with a purse seine, the catch is piled up in large quantities to make it easier to pump the fish on board the boat, explains HI researcher," says Neil Anders.

"We wanted to find a way to measure how fish respond when pushed in this way," says research colleague Michael Breen.

Checking the "vitality" of individual fish

First, the scientists recreated what the fish experience inside a fishing net, by crowding mackerel together in an aquaculture cage.

The researchers tested how individual fish coped, using various tests to find out which physiological and behavioral stress responses they showed. Together, the results gave a measure of the vitality of each individual fish.

The marine researchers then took their experience and methods from the cage to a commercial purse seine boat.

There they also examined the stress response, blood tests and general condition of individual fish from the catch.

The scientists checked how individual fish fared. Photo: Norwegian Institute of Marine Research (IMR)

Larger catches and longer pumping times resulted in poorer welfare

The results were clear: animal welfare in the catching process was negatively affected when large catches were crowded together to be pumped into the boat.

Mackerel's skin changes from green to blue when the fish is exposed to stress - Photo: Guro Møen Tveit. Norwegian SciTech News -->

"It was clear that larger catches result in longer pumping times, increasing the negative consequences for welfare. We saw that vitality deteriorated, and in the blood samples we were able to measure that the fish from large catches had been very stressed," says Breen.

"The study provides a good indication of how animal welfare can be improved in the harvesting process," Anders believes. "For example, by going after the smaller schools. If the catches are smaller, the time it takes to get the fish on board is shorter and then welfare would be improved."

Important progress to monitor animal welfare in fisheries

One of the most important results for the marine scientists, however, is the new method they have developed.

"Being able to measure welfare through fish vitality is an important tool to be able to monitor and further improve fish welfare during the harvest process," concludes Breen.

Source: Marine Research Institute


Click this link for details of the cage trials used to assess the impact of overcrowding on the welfare of Atlantic mackerel (Scomber scrombrus).


[email protected]
www.seafood.media


 Print


Click to know how to advertise in FIS
MORE NEWS
South Korea
Mar 24, 19:00 (GMT + 9):
Russia is the main supplier of pollock in Asia
Spain
Mar 24, 07:30 (GMT + 9):
Lidl is committed to responsible aquaculture
Tanzania
Mar 24, 07:00 (GMT + 9):
Zoetis receives $15.3 million to improve sustainability in Africa
Republic of Ireland
Mar 24, 07:00 (GMT + 9):
Number of fishing boats to be scrapped doubles since February
Norway
Mar 24, 07:00 (GMT + 9):
Recommends quota of 315 tonnes for Jan Mayen cod
New Zealand
Mar 24, 07:00 (GMT + 9):
Applications Now Open For Global Innovation Launchpad For New Zealand Aquaculture
China
Mar 24, 07:00 (GMT + 9):
The new Dachan Bay Wharf receives tuna from distant fleets for the first time following the Shenzhen Modern Fisheries Development Plan (2022-2025)
Worldwide
Mar 24, 07:00 (GMT + 9):
Surimi prices expected to fall in 2023
Falkland Islands
Mar 24, 05:00 (GMT + 9):
IN BRIEF - Weekly Catch Updates (loligo, illex squid, hake,more...)
South Korea
Mar 24, 03:00 (GMT + 9):
IN BRIEF - Trial begins for top Moon officials regarding death of fisheries employee
Seychelles
Mar 24, 02:00 (GMT + 9):
IN BRIEF - Seychelles fisheries sector meets to discuss experimental fisheries protocol
Argentina
Mar 24, 01:10 (GMT + 9):
Squid: The average yields of the jigging fleet were reduced by 25 percent
United States
Mar 24, 01:00 (GMT + 9):
IN BRIEF - Sitka Sound Herring Fishery Update
Japan
Mar 24, 00:50 (GMT + 9):
Production volume │Surimi derived products | Chikuwa - Kamaboko - Naruto │2021-23
United States
Mar 24, 00:50 (GMT + 9):
2020 Auction alaska pollock roe (in Seattle) │ Season A 2023



Lenguaje
FEATURED EVENTS
  
TOP STORIES
China is importing value-added products of Russian origin
China The Chinese market remains the main market for domestic fish products. Russian fish goes to China not only as a raw material - fillets, minced meat, canned and other finished products a...
ANFACO-CECOPESCA will demand that tuna be excluded from the negotiation with Thailand for a free trade agreement
Spain Before the official announcement of the European Commission on the relaunch of trade negotiations with Thailand, ANFACO-CECOPESCA expresses its deep concern about the start of negotiations betwee...
Catchs increased by 11% compared to last year - more than 1.25 million tons were caught
Russia Fed. According to the industry monitoring system, by March 21, Russian fishermen caught more than 1.25 million tons, which is 11% higher than the level of the same period in 2022. Source: Federal Agency...
Report: Ocean warming may intensify IUU fishing and threaten global security
Worldwide The following is an excerpt from an article published by the Responsible Seafood Advocate: IUU fishing activity has the potential to ‘evolve significantly’ with ocean warming A new repor...
 

Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation - Wartsila Group Headquarters
ITOCHU Corporation - Headquarters
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. - Group Headquarters
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
AquaChile S.A. - Group Headquarters
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
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
Brim ehf (formerly HB Grandi Ltd) - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Grupo Pereira Headquarters
Costa Meeresspezialitäten GmbH & Co. KG
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Mowi ASA (formerly 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
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 - Headquarters
Cooke Inc. - Group Headquarters
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart | Wal-Mart Stores, Inc. (Supermarket) - Headquarters
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
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
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2023 Seafood Media Group Ltd.| All Rights Reserved.   DISCLAIMER