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


The Australasian gannet was used as biological monitor of the marine environment and the sources of food. (Photo: JJ Harrison/CC BY-SA 3.0)

Environmental conditions affect fish and squid nutritional quality

Click on the flag for more information about Australia AUSTRALIA
Friday, June 15, 2018, 00:20 (GMT + 9)

Under warm water events the nutritional balance of fish and squid changes and is of lower quality while under cold water events it is of higher quality, according to new research by the University of Sydney.

The researchers carrying out the study used a highly successful marine predator seabird – the Australasian gannet – as a biological monitor of the marine environment and food sources.

The team combined miniature bird-borne GPS loggers, fish and squid nutritional analysis and nutritional modelling, and quantified colder and warmer water events by comparing the mean sea surface temperature with 10 years of data.

Fish and squid captured by gannets were found to have significantly lower ratio of healthy oils to protein during warm water periods (where sea surface temperature was warmer than the 10-year mean) and better nutritional quality during cold water periods (lower than the 10-year mean).

Lead author Dr Gabriel Machovsky-Capuska, adjunct senior researcher at the University of Sydney’s Charles Perkins Centre, said the findings had implications for marine life and its predators, including humans.

Co-author Professor David Raubenheimer, the University of Sydney’s Leonard P Ullmann Chair in Nutritional Ecology at the School of Life and Environmental Sciences and Charles Perkins Centre, said the research team devised a novel approach in order to conduct the research.

“Our approach, which we call nutritional landscapes, allows us to associate the nutritional quality of marine resources – otherwise very challenging, as marine life continuously moves – with geographic location, water depth and environmental conditions such as sea surface temperature and chlorophyll levels,” Professor Raubenheimer explained.

“These findings underline the importance of linking marine environmental fluctuations with the nutritional quality of fish and squid for human consumption – and provide significant insights for fisheries that are capturing fish for humans to eat,” the researcher added.

Dr Machovsky-Capuska said the findings were also revealing for environmental and conservation purposes.

“The work shows that diet and foraging behaviour of marine predators are significantly influenced by warm and cold events,” he said.

“During warm water events gannets had to work harder for their food as they expanded their foraging habitat and increased their foraging trip duration, while at the same time consuming prey and diets with lower content of energy-providing oils,” he stressed.

Dr Machovsky-Capuska stated that their approach can be used to understand and ultimately protect travelling routes for migratory species, and could support the conservation of endangered species in terms of food quality and habitat suitability.

Published in the Journal of Animal Ecology, the research was a collaboration between the Charles Perkins Centre, School of Life and Environment Sciences and School of Mathematics and Statistics at the University of Sydney; James Cook University in Queensland; Massey University in New Zealand; and the Ornithological Society of New Zealand.

It forms part of the Human animal interactions and Human food chain project nodes at the Charles Perkins Centre.

editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
United States
Dec 13, 08:00 (GMT + 9):
SFP releases 2018 farmed shrimp strategy report
Spain
Dec 13, 03:20 (GMT + 9):
Report reveals Spanish fish market breach labelling law
New Zealand
Dec 13, 02:20 (GMT + 9):
King Salmon intends to farm salmon in open-ocean sites off Otago
Peru
Dec 13, 00:50 (GMT + 9):
Mollusk farming encouraged in Ilo
United Kingdom
Dec 13, 00:40 (GMT + 9):
Seafish deems post-Brexit potential trade agreements as crucial
Spain
Dec 12, 23:10 (GMT + 9):
Spain recognizes landing obligation will condition TAC negotiations in Brussels
European Union
Dec 12, 23:00 (GMT + 9):
Council of Ministers confirm Western Waters multiannual plan
Russian Federation
Dec 12, 22:20 (GMT + 9):
AquaMaof to build RAS plant with capacity to produce 2,500 tonnes of salmon
France
Dec 12, 22:10 (GMT + 9):
Insect-fed trout reaches French consumers
Norway
Dec 12, 21:20 (GMT + 9):
Salmon price status at week 49
Japan
Dec 12, 20:00 (GMT + 9):
IN BRIEF - BAP Seafood at Hitachi Cafeterias Marks Official Launch of BAP in Japan
India
Dec 12, 02:30 (GMT + 9):
Shrimp exporters voice concern over US import regulations
Chile
Dec 12, 02:20 (GMT + 9):
SONAPESCA files suit against SUBPESCA for fishery auctions
Canada
Dec 12, 00:30 (GMT + 9):
New measures to better manage aquaculture and protect wild salmon
Spain
Dec 12, 00:10 (GMT + 9):
Jealsa becomes a new IPNLF member



Lenguaje
FEATURED EVENTS
  
TOP STORIES
SNP and WWF sign cooperation framework agreement aimed at improving fisheries management.
Peru The National Fisheries Society and WWF Peru renewed their institutional cooperation framework agreement, in order to continue working to safeguard the biodiversity of the Peruvian sea and Manage fisheries better and better.
SFP releases 2018 shelf-stable tuna sector report
Worldwide Nearly half of the world’s shelf-stable tuna products are already being sourced in a sustainable or improving manner, with the potential for much more than that, according to the latest sector report from Sustainable Fisheries Partnership.
North Carolina to receive federal funds to relieve damage caused by Hurricane Florence
United States The US Department of Commerce has conferred North Carolina Government the fishery disaster declaration due to the damage that Hurricane Florence caused to its fisheries sector, a measure that will allow it to grant federal relief funds.
Giant squid exports forecast for USD 500 million for 2018
Peru Peruvian exports of products made from giant squid could reach USD 500 million this year, according to forecasts by the Committee for the Management of the Southern Pacific Jumbo Flying Squid.
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
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. - Group Headquarters
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
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
Marona S.A.
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
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 - Headquarters
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