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

hat the impact of the sea lice is so large that it exceeds that of the commercial fishery that used to exist here, says Jennifer Ford, a co-author and fisheries scientist. Since the infestations began, the fishery has been closed and the salmon stocks have continued declining.

In the Broughton there are just too many farmed fish in the water. If there were only one salmon farm this problem probably wouldnt exist, Krkosek says.

Over the years the number of farmed fish has increased, says Morton. There used to be only a few farms, each holding about 125,000 fish. But now we have over 20 farms, some holding 1.3 million fish. The farmed fish are providing a habitat for lice that wasnt there before.

The researchers observed that when farms on a primary migration route were temporarily shut down, or fallowed, sea lice numbers dropped and salmon populations increased. Even though they have complicated migration patterns they all have one thing in common overall, the populations that are declining are the ones that are going past the farms, says Mark Lewis, a mathematical ecologist at the University of Alberta.

There are two solutions that may work closed containment, and moving farms away from rivers, says Lewis. Closed containment means moving the salmon to pens that are completely sealed off from the surrounding environment in contrast to the open-net pens currently in use. In a May 16, 2007 provincial government report, the B.C. Special Committee on Sustainable Aquaculture recommended a move towards closed containment within 5 years.

If industry says its too expensive to move the fish farms or contain them, they are actually saying the natural system must continue to pay the price, says Daniel Pauly, Director of the University of British Columbias Fisheries Centre, who was not involved with the study. They are, as economists would say, externalizing the costs of fish farming on the wild salmon and the public.

M
'/>"/>

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:12/10/2014)... -- CIE San Diego has launched an innovative trust ... that enhances care coordination among social service and care ... earned a second $1 million grant from the Alliance ... in community and; will be recognized as a "Live ... 4-6p. CIE San Diego today announced the ...
(Date:12/5/2014)... Calif. , Dec. 4, 2014 ... has boosted investments in new testing and inspection ... also given rise to a range of innovative ... the requirements of Generation Y, which is generally ... As a result, product development strategies of test ...
(Date:12/3/2014)... 2, 2014   Marvin Test Solutions , ... solutions for military, aerospace, and manufacturing organizations, today ... successful TS-900 PXI semiconductor test platform . ... high-end systems to customers at a fraction of ... traditional ATE. "Our semiconductor customers ...
Breaking Biology News(10 mins):Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3
... introducing exotic species into natural environments in order ... less indispensable purposes such as horticulture, fishing or ... adapted for hosting new arrivals. Past introduction attempts, ... or brown fario trout into Southern hemisphere water ...
... using a CSIRO-designed instrument, to help develop new methods ... Forests are the worlds main above-ground carbon store and ... But estimating the amount of carbon stored in forests ... is using the CSIRO-designed ECHIDNA instrument, together with airborne ...
... a major reproduction site for leatherback turtles. This sea ... activity: it ingests plastics, get accidentally caught in fishing ... hunted illegally for their meat and their eggs. Female ... three years to lay their eggs. What happens in ...
Cached Biology News:Conservation of freshwater fish biodiversity: a challenge for the countries of the South 2Conservation of freshwater fish biodiversity: a challenge for the countries of the South 3Isotope analysis reveals foraging area dichotomy for Atlantic leatherback turtles 2
(Date:12/17/2014)... (PRWEB) December 17, 2014 Gene ... that it has entered into a technology access ... (ADM) to apply DNA2.0’s proprietary protein engineering technology, ... process. , “We are extremely excited that the ... platform. This proprietary bioengineering technology has now ...
(Date:12/17/2014)... SOUTH SAN FRANCISCO, Calif. , Dec. 17, ... positive results of a Phase 2 study evaluating ... for the treatment of patients with severe, chronic ... the current standard of care, including topical steroids ... endpoint was percent change in Visual Analog Scale ...
(Date:12/15/2014)...  GlassesOff Inc. (OTCBB: GLSO) announced today the appointment ... director of the Company,s Board of Directors. ... its CEO until its acquisition by Stanley Black ... Recognized as the inventor of the first Wi-Fi-based Active ... -based RFID solutions focused on improving operational efficiency, safety ...
(Date:12/13/2014)... (PRWEB) December 12, 2014 Clarassance, a ... announced its new name: Therabron Therapeutics , Inc. ... and bronchioles (a type of structure in the lungs ... company’s mission to develop novel protein therapeutics for the ... directors decided to change the name to mark the ...
Breaking Biology Technology:ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4AeroScout Founder Joins GlassesOff's Board of Directors 2AeroScout Founder Joins GlassesOff's Board of Directors 3Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2
... June 30 Celsis In Vitro, Inc. ... patent infringement lawsuit against Invitrogen Corporation (Invitrogen) and CellzDirect, ... the Northern District of Illinois in ...  Invitrogen, the parent of CellzDirect, is itself a wholly-owned ...
... SAN DIEGO , June 30 TargeGen, ... of small molecule kinase inhibitors today announced that the Company ... SNY). Under the agreement, the ultimate purchase price will depend ... total $560M if such milestones are fully realized. ...
... , June 30 SeqWright Inc., ... biology services, announced today the expansion of its ... offer the company,s innovative RainStorm™ microdroplet-based PCR technology. ... researchers for more efficient and cost-effective processes that ...
Cached Biology Technology:Celsis Seeks Injunction Against Invitrogen for LiverPool(TM) Patent Infringement 2Celsis Seeks Injunction Against Invitrogen for LiverPool(TM) Patent Infringement 3Sanofi-aventis to Acquire TargeGen, Inc. 2SeqWright Expands Genomics Services Offering Through New Partnership With RainDance Technologies 2
... 100 IS System is a compact analysis system ... lasers, optics, fluidics, a controller, advanced digital signal ... compact lab analysis system includes the Luminex 100, ... has a DMF file at the FDA, and ...
... for routine binary separations. Excellent detection is ... UV-Visible variable wavelength detector. Ultra-fine control of ... two highly accurate and precise, high pressure dual ... Chromatograms may be plotted on a printer or ...
... cultured in Minimum Essential Medium (Eagle) with 2 ... of growth. In order to keep the ... in acetone-methanol. The cells are arrayed on ... each wells surface specifically treated to enhance cellular ...
... were cultured in RPMI 1640 with 2 mM ... growth. In order to keep the antigens ... acetone-methanol. The cells are arrayed on a ... wells surface specifically treated to enhance cellular attachment ...
Biology Products: