Navigation Links
Half of the fish consumed globally is now raised on farms, study finds
Date:9/7/2009

re production was 51.7 million metric tons, and about 20 million metric tons of wild fish were harvested for the production of fishmeal. "It can take up to 5 pounds of wild fish to produce 1 pound of salmon, and we eat a lot of salmon," said Naylor, the William Wrigley Senior Fellow at Stanford's Woods Institute for the Environment and Freeman Spogli Institute for International Studies.

One way to make salmon farming more environmentally sustainable is to simply lower the amount of fish oil in the salmon's diet. According to the authors, a mere 4 percent reduction in fish oil would significantly reduce the amount of wild fish needed to produce 1 pound of salmon from 5 pounds to just 3.9 pounds. In contrast, reducing fishmeal use by 4 percent would have very little environmental impact, they said.

"Reducing the amount of fish oil in the salmon's diet definitely gets you a lot more bang for the buck than reducing the amount of fishmeal," Naylor said. "Our thirst for long-chain omega-3 oils will continue to put a lot of strain on marine ecosystems, unless we develop commercially viable alternatives soon."

Naylor and her co-authors pointed to several fish-feed substitutes currently being investigated, including protein made from grain and livestock byproducts, and long-chain omega-3 oils extracted from single-cell microorganisms and genetically modified land plants. "With appropriate economic and regulatory incentives, the transition toward alternative feedstuffs could accelerate, paving the way for a consensus that aquaculture is aiding the ocean, not depleting it," the authors wrote.

Vegetarian fish

Fishmeal and fish oil are important staples at farms that produce carnivorous fish, including salmon, trout and tuna. But vegetarian species, such as Chinese carp and tilapia, can be raised on feed made from plants instead of wild-caught fish. That's one reason why farm-raised vegetarian fish have long been considered
'/>"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. K-State plant pathologists develop online teaching modules used globally
2. Faculty of 1000 praised by Wellcome Trust
3. Equity concerns raised by congestion pricing can be addressed to make approach viable
4. Largest ever Alzheimers genome study unveils dementia mysteries
5. LSU receives $3.6 million to fund center studying hazardous waste cleanup and health impacts
6. Study: Popular supplement quercetin does not enhance athletic performance
7. Scientists study possible responses to climate emergencies
8. Online news garners more attention from readers if its negative and localized, MU study finds
9. Unique study isolates DNA from Linnaeus botanical collections
10. Study: Oil speculators dominate open interest in oil futures
11. Pitt study finds molecular link between insulin resistance and inflammation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Half of the fish consumed globally is now raised on farms, study finds
(Date:7/27/2014)... shown the potential for global climate change to cut ... part, ignored the interactions between increasing temperature and air ... damage crops. , A new study involving researchers at ... suggesting that policymakers need to take both warming and ... The study looked in detail at global production of ...
(Date:7/27/2014)... an age of "big data," a single computer cannot ... must instead be distributed across a cluster of computers ... Facebook and Google mine your web history to present ... recommend your next favorite book or movie. But big ... New technologies for monitoring brain activity are generating unprecedented ...
(Date:7/25/2014)... In the first broad-scale estimate of air pollution removal ... calculated that trees are saving more than 850 human ... respiratory symptoms. , While trees, pollution removal equated to ... percent, the impacts of that improvement are substantial. Researchers ... pollution at nearly $7 billion every year in a ...
Breaking Biology News(10 mins):Study: Climate change and air pollution will combine to curb food supplies 2Study: Climate change and air pollution will combine to curb food supplies 3New tools help neuroscientists analyze 'big data' 2New tools help neuroscientists analyze 'big data' 3New tools help neuroscientists analyze 'big data' 4New tools help neuroscientists analyze 'big data' 5First national study finds trees saving lives, reducing respiratory problems 2
... is set for the local fauna! ,Computer scientists from ... archives of Berlin,s Humboldt University, have developed a kind of ... entertainment, but a lot to do with the protection of ... recognise the characteristic birdsong of different species of birds, thereby ...
... evolved to cope with different temperatures by altering the make-up ... bacteria change these complex and important structures to adapt to ... as well as their genes. The researchers hope their study, ... start a new trend in research. ,Evolution Canyons, I ...
... NYU Langone Medical Center researchers have long ... disease. They were among the first to characterize amyloid, ... to describe a genetic mutation in a familial form ... intervention program to reduce the need for placing patients ...
Cached Biology News:Birdsong not just for the birds 2Bacteria reveal secret of adaptation at Evolution Canyon 2NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 2NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 3NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 4NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 5NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 6NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 7NYU Langone Medical Center's tip sheet to the International Conference on Alzheimer's Disease 2008 8
(Date:7/28/2014)... 28, 2014 The National Model Aviation ... IN, is pleased to announce that it has been ... of the United States Air Force. , The certification ... that concluded this spring with an on-site inspection by ... museum. , The National Museum of the United ...
(Date:7/25/2014)... the University of Leicester has furthered our understanding ... to create new materials using nanosized ,building blocks,. ... the prestigious academic journal Physical Review Letters ... in rich detail the structure and internal atomic ... molecule and a single helium atom. , The ...
(Date:7/25/2014)... Livermore, California (PRWEB) July 25, 2014 ... been named to Thomson Reuters list of " The ... Pitz are part of the 3,000 researchers who were ... years to recognize those who published the highest-impact work ... numerous research papers on combustion modeling . , ...
(Date:7/24/2014)... New York, NY - July 24, 2014 -- Keryx ... results from the long-term, randomized, active control Phase 3 ... ferric iron-based phosphate binder, for the treatment of hyperphosphatemia ... The PERFECTED study (PhosphatE binding and iRon delivery with ... the Journal of the American Society of Nephrology ...
Breaking Biology Technology:AMA’s National Model Aviation Museum Granted Full Civilian Museum Certification by the National Museum of the United States Air Force 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 2Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 3Zerenex (ferric citrate) long-term Phase 3 study results published in JASN 4
... LAWRENCE, Kan., May 26, 2011 Starting today, 11,000 U.S. ... be able to assure diners a guarantee of quality about ... assurance of quality and commitment. Braveheart Black ... exclusively supplied by Performance Food Group (PFG), one ...
... the issue of data overload from next-generation sequencers, Life ... its LifeScope™ 2.0 Genomic Analysis Software , a significantly ... to study human disease such as cancer. ... generation sequencing instrument can generate nearly 200 gigabytes of genomic ...
... Inc. (OTCBB: NRGX) announced the presentation today of efficacy ... as part of the Company,s successful Phase 2 clinical ... the treatment of Parkinson,s disease (PD).  Improvements in the ... for the randomized, double-blind, sham surgery-controlled trial of 45 ...
Cached Biology Technology:DNA Technology on the Menu in 11,000 U.S. Restaurants 2Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 2Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 3Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 4Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 5Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 2Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 3Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 4Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 5Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 6Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 7Neurologix Presents One-Year Follow-Up Data From Phase 2 Study of NLX-P101 in Parkinson's Disease at International Neuromodulation Society 10th World Congress 8
... Protein Interaction Kit provides an extremely ... to isolate intact protein complexes. Unlike ... or multiple purification steps, this system ... StrepTactin Superflow Column for fast protein ...
Request Info...
... The system consists ... (Cat. No. 17001-082) and ... 17002-080). It is complete ... promoting agents, and requires ...
... Dynabeads Tosylactivated (4.5 m). Hydrophobic naked ... coupling of antibodies for cell applications. Proteins ... covalent binding of primary amine groups (NH ... Coupling reactions can be performed at neutral ...
Biology Products: