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

the Broughton Archipelago, a group of islands and channels about 260 miles northwest of Vancouver that is environmentally, culturally, and economically dependent on wild salmon. To pinpoint the effect of salmon farms, the study used a large dataset collected by the Canadian federal governments Department of Fisheries and Oceans (Fisheries and Ocean Canada) that estimates how many adult salmon return from the ocean to British Columbias rivers each year. Extending back to 1970, the data covers 14 populations of pink salmon (Onchorhynchus gorbuscha) that have been exposed to salmon farms, and 128 populations that have not.

Sea lice (Lepeophtheirus salmonis) are naturally occurring parasites of wild salmon that latch onto the fishes skin in the open ocean. The lice are transmitted by a tiny free-swimming larval stage. Open-net salmon farms are a haven for these parasites, which feed on the fishes skin and muscle tissue. Adult salmon can survive a small number of lice, but juveniles headed from the river to the sea are very small, thin-skinned, and vulnerable.

In the Broughton Archipelago, the juvenile salmon must run an 80-kilometer gauntlet of fish farms before they reach the open ocean. Salmon farming breaks a natural law, says co-author Alexandra Morton, director of the Salmon Coast Field Station, located in the Broughton. In the natural system, the youngest salmon are not exposed to sea lice because the adult salmon that carry the parasite are offshore. But fish farms cause a deadly collision between the vulnerable young salmon and sea lice. They are not equipped to survive this, and they dont.

Salmon bring nutrients from the open ocean back to the coastal ecosystem. Killer whales, bears, wolves, birds, and even trees depend on pink salmon. If you lose wild salmon theres a lot you are going to lose with them including other industries such as fishing and tourism, says Krkosek.

An important finding of this paper is t
'/>"/>

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:11/5/2014)... Rio de Janeiro, Brazil -Individuals show great diversity in ... importantly, males and females greatly differ in their perceptual ... kinds of smell tests. , Sex differences ... social behaviors and may be connected to one,s perception ... and emotions. Thus, women,s olfactory superiority has been suggested ...
(Date:11/4/2014)... 4, 2014) — Think about the way our bodies ... neighboring cells know that they are supposed to become ... these tissues find the correct place and alignment? Researchers ... crucial questions. , In a new study, UM researchers ... with their surrounding neighbors, at the head-trunk region. Their ...
(Date:11/4/2014)... , Nov. 4, 2014   Neurotechnology , ... announced that the latest version of its fingerprint ... Ongoing MINEX evaluation organized by NIST. ... algorithms using the INCITS 378 fingerprint standard template ... in public tenders in the United ...
Breaking Biology News(10 mins):The female nose always knows: Do women have more olfactory neurons? 2The inside story: How the brain and skull stay together 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3
... substances involved in the Jekyll-and-Hyde transformation that changes harmless ... study appears in ACS, Environmental Science & Technology ... note that bleaching already has destroyed up to 30 ... searching for ways to slow or stop the damage. ...
... a nanometer in diameterhave been highly touted for potential ... devices, or hydrogen storage components for fuel cells. Thanks ... Institute of Standards and Technology (NIST) and five partners, ... detection and destruction of an aggressive form of breast ...
... to the National Institute of Health, 40 percent to 45 ... of diabetic retinopathy. Diabetic retinopathy, damage to the retina ... blindness in people with diabetes and is one of the ... percent of all patients who,ve had diabetes for 10 years ...
Cached Biology News:Combining nanotubes and antibodies for breast cancer 'search and destroy' missions 2Study shows pine bark improves circulation, swelling and visual acuity in early diabetic retinopathy 2Study shows pine bark improves circulation, swelling and visual acuity in early diabetic retinopathy 3
(Date:11/22/2014)... Colo. (PRWEB) November 21, 2014 ... proprietary cloud based analytics and scientific testing methodologies relating ... commitment for a $750,000 line of credit from an ... extremely pleased to have secured this commitment from one ... Executive Officer of CannLabs. “This capital will help accelerate ...
(Date:11/22/2014)... Nov. 21, 2014  The element of surprise has ... i.e., they strike without warning. Until now, epidemiologists had ... a viral outbreak, resulting in suboptimal responses to both ... Photo - http://photos.prnewswire.com/prnh/20141121/160242 ... been removed because virus gene structural changes have been ...
(Date:11/21/2014)... (PRWEB) November 20, 2014 Offering a ... Sartorius Entris Balance promotion . The Sartorius Entris ... a durable, high accuracy, and easy-to-maintain balance entry level ... Germany. It was designed to help customer’s bridge the ... a balance that is very durable. Sartorius is the ...
(Date:11/21/2014)... Arkansas (PRWEB) November 20, 2014 ... Pinnacle Ozone Solutions, LLC (Pinnacle), and PCI, Inc., ... announced that they have been selected to provide ... of Fayetteville, Arkansas Paul R. Noland Wastewater Treatment. ... BlueInGreen’s patented HyDOZ® gas dissolution technology, ...
Breaking Biology Technology:CannLabs Secures $750,000 Line Of Credit 2Viruses' Advantage of Surprise is Lost 2Pipette.com Announces an Extension on the Sartorius Entris Balance Promotion to the End of 2014 2City of Fayetteville Leads Nation with Innovative Ozone Technology 2City of Fayetteville Leads Nation with Innovative Ozone Technology 3City of Fayetteville Leads Nation with Innovative Ozone Technology 4
... MIT scientists explaining how they recently discovered a catalyst ... assistance of a five-year $20 million award from the ... (Caltech) Chemical Bonding Center (CBC) project, called "Powering the ... fulfill its goal of efficiently and economically converting solar ...
... MEDX ) announced today that it is scheduled to ... a.m. Eastern Time on,Thursday, September 4, 2008. The event ... Investor Relations section of the Medarex website at, http://www.medarex.com ... available,following the event., About Medarex, Medarex is ...
... Sky One,Medical, Inc. ("China Sky One Medical" or "the ... company producing external use,over-the-counter drugs in the People,s Republic ... to list its common stock on the,NASDAQ Global Market., ... the NASDAQ Global Market on,September 15, 2008, and that ...
Cached Biology Technology:Understanding the science of solar-based energy: more researchers are better than one 2Medarex to Present at the Thomas Weisel Partners Healthcare Conference 2China Sky One Medical, Inc. Approved to List on the NASDAQ Global Market 2China Sky One Medical, Inc. Approved to List on the NASDAQ Global Market 3
Chicken polyclonal to YebU ( Abpromise for all tested applications). Antigen: Synthetic peptide, corresponding to amino acids 196-244 of E. coli YebU....
...
...
...
Biology Products: