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


Ocean acidification process. (Image: Hannes Grobe CC-BY-SA-2.5)

Ocean acidification misleads fish larvae

Click on the flag for more information about Australia AUSTRALIA
Thursday, April 12, 2018, 03:00 (GMT + 9)

Researchers from the University of Adelaide have found that oceanic larvae will find it harder to reach secure shelters in future acidified oceans, putting fish populations at risk.

These scientists described how barramundi larvae in high CO2 conditions, predicted for the turn of the century, turn away from the ocean noises they would normally be attracted to. They are instead attracted to other sounds – noises produced by the wrong sort of habitats and or ‘white noise’.

“The oceans are far from silent environments; they harbour many noisy animals, for example snapping shrimp and whales and dolphins,” points out project leader Professor Ivan Nagelkerken, from the University of Adelaide’s Environment Institute.

The professor explains that oceanic larvae from quite a few species of fish and invertebrates listen to sounds of coastal ecosystems and use these sounds to guide them from the open ocean, where they hatch, to a sheltered home in shallow waters, where they can spend their juvenile and adult lives.

“Unfortunately the CO2 that humans are pumping into the atmosphere by burning fossil fuels gets absorbed by the ocean and causes acidification, and this causes changes to the behaviour of many marine animals,” the professor adds.

The research compared the activity of barramundi larvae in marine tanks with levels of CO2 that are predicted for the turn of the century against the responses of barramundi larvae in current day CO2 levels.

Professor Nagelkerken stressed they found that while larvae of barramundi are attracted to the sounds of tropical estuaries, larvae raised under future ocean conditions with elevated CO2 were deterred by these natural sounds, clarifying that under elevated CO2, larval barramundi were attracted to the wrong sounds.

Professor Sean Connell, from the University’s Southern Seas Ecology Laboratories, said that if ocean acidification causes larvae to be deterred to the sounds of their habitats, and attracts them to irrelevant sounds, they could end up in the wrong habitat or in places where they cannot survive.

“Fewer larvae are arriving in coastal ecosystems, estuaries and rivers could result in smaller population sizes and, in the case of commercial species like barramundi, this could have a significant impact on fisheries, whether it be commercial or recreational,” Professor Connell explained.

The research findings were published in the Nature journal Scientific Reports.

[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Myanmar
Jul 20, 03:20 (GMT + 9):
Aquaculture sector needs new strategies to reduce feed costs
Canada
Jul 20, 02:40 (GMT + 9):
Strong shrimp market benefits Inuit organisation
Chile
Jul 20, 01:40 (GMT + 9):
SMA requests permission from Environmental Court to stop operations at Marine Harvest centre
United States
Jul 20, 01:20 (GMT + 9):
IN BRIEF - Marine Science and Conservation Experts Join ISSF Committees
New Zealand
Jul 20, 01:20 (GMT + 9):
IN BRIEF - 'Destructive' fishing practices blamed for decline of tarakihi fishery
India
Jul 20, 01:20 (GMT + 9):
IN BRIEF - Fishermen get green signal for venturing into the sea
Canada
Jul 20, 01:00 (GMT + 9):
IN BRIEF - North Vancouver MP Jonathan Wilkinson named federal minister of fisheries, oceans and coast guard
United Kingdom
Jul 20, 01:00 (GMT + 9):
IN BRIEF - Alison Austin OBE appointed to lead Seafood 2040 strategy
United States
Jul 20, 01:00 (GMT + 9):
IN BRIEF - Seafood analyst: Trump's proposed tariffs hurt Alaska
Ukraine
Jul 20, 01:00 (GMT + 9):
IN BRIEF - Ukraine ombudsperson asks Poroshenko to swap Ukrainian fishermen for Russian Nord crew
United States
Jul 20, 01:00 (GMT + 9):
EN BREVE - What’s at Stake for the Billion Dollar Atlantic Bigeye Tuna
Chile
Jul 20, 01:00 (GMT + 9):
Senate Fisheries Commission meets on board scientific vessel
United States
Jul 20, 00:50 (GMT + 9):
Maine allocates USD 340,000 to support lobster fishery research
Spain
Jul 19, 23:00 (GMT + 9):
First Atlantic skipjack tuna fishery to start MSC assessment process
United States
Jul 19, 22:40 (GMT + 9):
New York-based fish processors agree to stop operations due to potential listeria contamination



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Fiji joins international treaty against IUU fishing
Fiji The Fiji government has agreed to sign up to a FAO treaty aiming to prevent, deter and stop illegal fishing by implementing efficient port state measures.
EU sanitary authority approves control systems for bivalve mollusks
Peru The Directorate General of Health and Food Safety of the EU has approved the audit carried out by a specialized team of that entity in the country to the production chain of live bivalve mollusks, such as scallops.
Fishing vessel detained under ILO convention
South Africa The first detention of a fishing vessel under the provisions of the International Labour Organization’s Work in Fishing Convention, 2007 (No. 188), has taken place.
Warmer water could reduce expected abundant sockeye return to the Fraser
Canada The threat of high water temperatures and several years of low fish survival is putting the expected 14 million sockeye return to the Fraser River in 2018 at risk.
 
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. - 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. -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