Navigation Links
How to grow a bigger brain

Hatchery-reared steelhead trout show increased growth of some parts of the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon reared in the wild, and the fish also showed behavior closer to wild than to hatchery-reared fish.

"There's an obvious difference between the hatchery and the wild fish," said graduate student Rebecca Kihslinger, who carried out the study with Gabrielle Nevitt, professor of neurobiology, physiology and behavior at UC Davis. "A simple change affected brain growth in a large-scale way."

The results could affect the design of hatcheries for breeding fish to restock wild populations, Kihslinger said. The study is published in the February 2006 issue of the Journal of Experimental Biology.

Wild steelhead lay their eggs in gravel nests on the riverbed. After hatching, the fry, called alevins, stay among the gravel and live off their yolk sac until they emerge as free-swimming fry. In hatcheries, the fish are reared in tanks of clean, well-aerated water, but without environmental features or enrichment.

Earlier work by Nevitt's lab at UC Davis and other labs has shown differences between hatchery-reared and wild fish, Kihslinger said. But most studies have looked at older fish, and have not distinguished between the effects of selective breeding for "domesticated" fish and of the environment in which the fish live.

Kihslinger reared steelhead in regular tanks and in tanks scattered with small stones. She videotaped the fish, and measured the size of their brains after 10 to 12 days, when the fish were emerging as free-swimming fry. She also studied fish reared in natural conditions in rivers.

Fish reared in both sets of tanks had brains of similar size, but the cerebellum, a part of the brain that controls movement and body position, was significantly larger in fish reared w
'"/>

Source:University of California - Davis


Page: 1 2

Related biology news :

1. Signaling protein builds bigger, better bones in mice
2. Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution
3. Study finds evolution doesnt always favor bigger animals
4. Why do cold animals make bigger babies?
5. A puzzle piece found in unraveling the wiring of the brain
6. Mapping neuron connections in the brain
7. New insights into how Huntingtons disease attacks the brain
8. UQ researcher tracking key to healing the brain
9. Color perception is not in the eye of the beholder: Its in the brain
10. MIT researcher finds neuron growth in adult brain
11. New neurons take baby steps in the adult brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: How grow bigger brain

(Date:7/29/2014)... PARIS, 29 JULY 2014 With thirty days to ... for the FEBS-EMBO 2014 Conference are well underway. The ... Biochemical Societies (FEBS), EMBO, and the French Society for ... Saturday, 30 August to Thursday, 4 September at the ... 2014 Conference is the largest meeting for the life ...
(Date:7/29/2014)... the first to show that while the impact of ... negative effects may be reduced by maintaining a healthy ... participants who exercised, slept well and ate well had ... healthy lifestyles, even when they had similar levels of ... in the department of psychiatry at UCSF. "It,s very ...
(Date:7/28/2014)... in the United States have a circulatory problem of ... painful and may even require surgery in serious cases. ... and, in turn, limb amputation. , At The University ... School, scientists tested a non-surgical preventative treatment in a ... with increased blood circulation. Their proof-of-concept study appears ...
Breaking Biology News(10 mins):Counting down to FEBS-EMBO 2014 in Paris, France 2Healthy lifestyle may buffer against stress-related cell aging, study says 2Scientists discover genetic switch that can prevent peripheral vascular disease in mice 2
... and sudden collapse of bee colonies across the country, but Penn ... triggers colony deaths which includes suppression of the bee immune system ... bee parasite that feeds much like a tick on the body ... pin head, dark brown in color and visible on close inspection. ...
... their genetic material from distantly related bacteria species, according ... Tucson. , The finding has important biomedical implications because ... many pathogenic bacteria pick up antibiotic resistance or become ... new antibiotics, it's important to monitor the rates and ...
... infected with HIV-1 engage a primitive defense mechanism ... invertebrates. The research also reveals exactly how HIV-1 ... vertebrate cells. However, elucidation of the mechanism HIV-1 ... into a potential vulnerability within the HIV-1 molecule. ...
Cached Biology News:Bee mites suppress bee immunity, open door for viruses and bacteria 2Bee mites suppress bee immunity, open door for viruses and bacteria 3Where bacteria get their genes 2Where bacteria get their genes 3Ancient immune defense mechanism is no match for HIV-1 2
(Date:7/29/2014)... Cheshire Cat: Can a particle be separated from its ... Communications , published the results of the first Cheshire ... conducted by Chapman University in Orange, CA, and Vienna ... a cat without a grin," thought Alice in Wonderland, ... curious thing I ever saw in my life!" Alice,s ...
(Date:7/29/2014)... 29, 2014 Second generation biofuels are a ... fossil fuels. However, as natural gas is very cheap, this ... are not as valuable as they could be in comparison ... financing projects, has made it difficult for renewable energy developers ... off the ground. For these reasons, certain companies have shifted ...
(Date:7/29/2014)... SPRINGS, Colo. , July 29, 2014 /PRNewswire/ ... specializing in cannabis formulation-based drug development and related ... York Times for taking a strong position in ... its Sunday, July 27, 2014 publication.  The New ... editorials and articles this week exploring the issue ...
(Date:7/29/2014)... Tenn. (PRWEB) July 29, 2014 ... in biomass feedstock supply innovation and supply chain ... proprietary feedstock management systems, Energy Grangeā„¢ and Supply ... of R&D and in-the-field testing aimed at consolidating ... offering benefits to landowners, farmers and feedstock end ...
Breaking Biology Technology:The quantum Cheshire cat: Scientists separate a particle from its properties 2The quantum Cheshire cat: Scientists separate a particle from its properties 3The quantum Cheshire cat: Scientists separate a particle from its properties 4Renewable Waste Intelligence: Could Renewable Chemicals Be the Future for the Renewable Energy Industry? 2Cannabis Science, Inc. (CBIS) Applauds New York Times Editorial Board Stance on 'Repealing Prohibition, Again'; NYT Editorial Is Bell Weather of Change 2Cannabis Science, Inc. (CBIS) Applauds New York Times Editorial Board Stance on 'Repealing Prohibition, Again'; NYT Editorial Is Bell Weather of Change 3Genera Energy Introduces Proprietary Feedstock Management Systems 2Genera Energy Introduces Proprietary Feedstock Management Systems 3Genera Energy Introduces Proprietary Feedstock Management Systems 4
... a,biomedical company advancing DNA-guided medicine and personalized,healthcare, today ... Small,Business Innovation Research (SBIR) Grant totaling $1.2 million. ... and Efficacy," was,awarded by the National Institute of ... most prescribed drugs in the world. Drugs in ...
... Post-Split Shares, JACKSONVILLE, Fla., March 19 ... the completion of its,100-for-1 reverse stock split process. ... in the quotation of the price of the ... Shareholders will receive instructions shortly for surrendering ...
... Kalologie Skincare today,announced that Niv Edward Caviar, ... elected to Kalologie Skincare,s board of,directors. Mr. Caviar ... "Niv is a strong marketer with solid ... forward to benefiting from Niv,s unique,insight in the ...
Cached Biology Technology:Genomas Awarded $1.2 Million NIH SBIR Grant to Develop DNA-Guided System for Management of Statin Therapy 2Ex-Allergan Vice President Joins Kalologie Skincare Board of Directors 2
SCCRO (S-17)...
... a nucleoside antibiotic from ... a potent translational inhibitor ... eukaryotic cells. Resistance to ... the products of the ...
... of a class of proteins who function to ... S plays an integral role in proofreading the ... excision repair and in preventing chromosomal recombination between ... DNA specifically at base pair mismatches and small ...
... Antibody Epitope: A BALB/c ... Recommended Storage: Store vial at ... and freeze at -20 C or below for ... thawing. Centrifuge product if not completely clear ...
Biology Products: