Navigation Links
Fish farms drive wild salmon populations toward extinction
Date:12/13/2007

A study appearing in the December 14 issue of the journal Science shows, for the first time, that parasitic sea lice infestations caused by salmon farms are driving nearby populations of wild salmon toward extinction. The results show that the affected pink salmon populations have been rapidly declining for four years. The scientists expect a 99% collapse in another four years, or two salmon generations, if the infestations continue.

The impact is so severe that the viability of the wild salmon populations is threatened, says lead author Martin Krkosek, a fisheries ecologist from the University of Alberta. Krkosek and his co-authors calculate that sea lice have killed more than 80% of the annual pink salmon returns to British Columbias Broughton Archipelago. If nothing changes, we are going to lose these fish.

Previous peer-reviewed papers by Krkosek and others showed that sea lice from fish farms can infect and kill juvenile wild salmon. This, however, is the first study to examine the population-level effects on the wild salmon stocks.

It shows there is a real danger to wild populations from the impact of farms, says Ray Hilborn, a fisheries biologist from the University of Washington who was not involved in the study. The data for individual populations are highly variable. But there is so much of it, it is pretty persuasive that salmon populations affected by farms are rapidly declining.

According to experts, the study also raises serious concerns about large-scale proposals for net pen aquaculture of other species and the potential for pathogen transfer to wild populations.

This paper is really about a lot more than salmon, says Hilborn. It is about the impacts of net pen aquaculture on wild fish. This is the first study where we can evaluate these interactions and it certainly raises serious concerns about proposed aquaculture for other species such as cod, halibut and sablefish.

The data are from
'/>"/>

Contact: Matt Wright
mwright@seaweb.org
617-835-9395
SeaWeb  
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. The power of multiples: Connecting wind farms can make a more reliable - and cheaper - power source
2. Evolution is driven by gene regulation
3. Bursts of waves drive immune system soldiers toward invaders
4. Adaptation to parasites drive African fishes along different evolutionary paths
5. Savanna habitat drives birds, and perhaps others, to cooperative breeding
6. Uncertainty drives the evolution of cooperative breeding in birds
7. How the plant immune system can drive the formation of new species
8. Scientists fear rare dolphin driven to extinction by human activities
9. Nutrient pollution drives frog deformities by ramping up infections, says CU-Boulder study
10. Newfound ancient African megadroughts may have driven the evolution of humans and fishes
11. Stem cell nuclei are soft hard drives, Penn study finds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fish farms drive wild salmon populations toward extinction
(Date:9/18/2014)... Sept. 18, 2014 -- Arizona turned its newborn screening ... a few short months, earning it the first-ever Newborn Screening ... March of Dimes presented Will Humble, M.P.H., Arizona,s Department of ... here today. Mr. Humble established a policy of full transparency ... send newborn blood samples to the lab for analysis, and ...
(Date:9/18/2014)... seem to be cheerful, happy-go-lucky characters, so you might ... life. , In fact some dogs are distinctly ... Sydney shows. , "This research is exciting because ... objectively and non-invasively. It offers researchers and dog owners ... that changes," said Dr Melissa Starling, from the Faculty ...
(Date:9/18/2014)... devastated algal forests in the eastern Mediterranean Sea pose ... their distribution continues to expand as the climate warms, ... team of researchers led by Dr Adriana Vergs of ... Institute for Advanced Studies in Spain, is published in ... team surveyed more than 1000 kilometres of coastline in ...
Breaking Biology News(10 mins):March of Dimes honors Arizona with first-ever newborn screening award 2March of Dimes honors Arizona with first-ever newborn screening award 3Dogs can be pessimists too 2Dogs can be pessimists too 3Tropical fish a threat to Mediterranean Sea ecosystems 2
... Santa Barbara have developed new methods for studying how environmental ... spatial and temporal scales. The scientists merged data collected ... canopies taken by the Landsat 5 Thematic Mapper. The findings ... issue of Marine Ecology Progress Series. In ...
... of State Foresters released the first phase of the Southern ... areas forest managers will focus on to maintain southern forests ... urbanization, bioenergy use, weather patterns, land ownership changes and invasive ... 2010 and 2060. About 23 million acres of forest ...
... is available in Spanish . The ... Ikerbasque, is participating in the AWIN -Animal Welfare Indicators project. ... international experts in animal welfare from 11 centres. The group ... University of Edinburgh on the 10 and 11 of May, ...
Cached Biology News:UCSB scientists track environmental influences on giant kelp with help from satellite data 2UCSB scientists track environmental influences on giant kelp with help from satellite data 3Forest Service unveils first comprehensive forecast on southern forests 2Forest Service unveils first comprehensive forecast on southern forests 3Neiker-Tecnalia participates in a European project for improving the welfare of farm animals 2Neiker-Tecnalia participates in a European project for improving the welfare of farm animals 3
(Date:9/19/2014)... 19, 2014 The new , Healthcare ... , available today on PharmaBoardroom.com for free ... that rocked the Spanish economy in 2009, and the austerity ... has remained pragmatic in times of trouble. "Despite ... fifth biggest European market, and the general conditions to invest ...
(Date:9/18/2014)... 18, 2014 About POCT ... outside a clinical laboratory. It helps in making ... treatments and medication. POCT is gaining popularity due ... diseases such as diabetes, heart disease, and obesity. ... are standardized to minimize errors during the diagnosis ...
(Date:9/18/2014)... , Sept. 18, 2014  Health Enhancement Products, Inc. (OTCQB: ... early-stage algae bioactive compounds and metabolic processes, is pleased to ... board of directors. Ms. Nola E. Masterson , a ... joined the board effective September 17, 2014. ... to join our board," states Andrew Dahl , President ...
(Date:9/18/2014)... 18, 2014 On Tuesday, Secretary of ... Jim Risch for National Lab Day on the Hill. ... the national laboratory system. Durbin and Risch also formally ... increase awareness of the reach of the national labs ... to address some of our nation's most pressing challenges. ...
Breaking Biology Technology:PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3POCT Market in China 2014-2018 2Health Enhancement Announces New Board Member In Advance Of Annual Shareholder Meeting 2Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 2Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 3
... Sept. 5 CryoLife, Inc. (NYSE: CRY ... announced,today that D. Ashley Lee, executive vice president, ... Inc., is scheduled to present at,the Bear Stearns ... at 4:30 p.m. EDT. Mr. Lee will also ...
... Medarex, Inc.,(Nasdaq: MEDX ) today announced ... its licensing partner, Centocor R&D, Inc. The,extended relationship ... Antibody Development System(R) for the generation of fully,human ... Under the terms of the new agreement, Centocor ...
... Very Robust Findings on the Key Problems Faced by ... Host a Conference Call Today at 11:00 am CET ... Directly From the Worldsleep07 Congress in,Australia HAMBURG, Germany ... Exchange: EVT),presented today at the worldsleep07 congress in Cairns, ...
Cached Biology Technology:Medarex Announces Extension of Broad Antibody Development Relationship with Centocor 2Medarex Announces Extension of Broad Antibody Development Relationship with Centocor 3Evotec Reports Details of the Positive Proof-of-Concept Phase II Study in Insomnia With EVT 201 2Evotec Reports Details of the Positive Proof-of-Concept Phase II Study in Insomnia With EVT 201 3Evotec Reports Details of the Positive Proof-of-Concept Phase II Study in Insomnia With EVT 201 4
... Eppendorf Reference Series 2000 Pipette is a ... a compact and robust design, and superior ... used to operate the measuring stroke and ... Product features:Eppendorf "pipette/tip" system ensures utmost accuracy ...
PA coated Agarose beads LPA Beads...
Identify and characterize Phosphoinositide (PI(3,4,5)P3) binding...
Mouse monoclonal antibody to PAEP - progestagen-associated endometrial protein (placental protein 14, pregnancy-associated endometrial alpha-2-globulin, alpha uterine protein)...
Biology Products: