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:10/15/2014)... virus is spreading rapidly and to an unexpected extent. ... the past and the virus shows a new disease ... before. For this reason, the German National Academy of ... and Engineering, and the Union of the German Academies ... the Ebola epidemic today. , In the statement the ...
(Date:10/14/2014)... Like discriminating thieves, prostate cancer tumors scavenge and hoard ... But such avarice may be a fatal weakness. ... to kill prostate cancer cells by delivering a trove ... the diseased cells brimming with the mineral, leaving non-cancer ... drugs already commercially available for other uses, could soon ...
(Date:10/14/2014)... research team has discovered a new kind of stem cell ... that lines liver blood vessels, according to a study published ... existence of such a cell type contradicts current theory on ... may hold clues to origins of, and future treatment for, ... single cell into a complex being made up of more ...
Breaking Biology News(10 mins):Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5Prostate cancer's penchant for copper may be a fatal flaw 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 3
... scientists at the University of Minnesota Medical School and ... and made suggestions on how to advance research and ... published in the January 2008 issue of the Lancet ... , Many neurological disorders are difficult to treat because ...
... and the National Center for Ecological Analysis and Synthesis ... predict gene flow across landscapes. Their approach could give ... for wildlife corridors, which are crucial to protecting biodiversity. ... theory and ecological connectivity, said Brad McRae, head of ...
... the University of California, San Diego have discovered a ... in the gene are present in both the female ... a paper that appears online today in the journal ... consent mutation because of its unusual properties. Mutations ...
Cached Biology News:International scientists tackle obstacles to treating brain disorders 2International scientists tackle obstacles to treating brain disorders 3Model connects circuit theory to wildlife corridors 2Biologists find unusual plant gene: abstinence by mutual consent 2Biologists find unusual plant gene: abstinence by mutual consent 3
(Date:10/19/2014)... October 19, 2014 The Asian Automatic ... Asian with analysis and forecast of revenue. The Automatic ... to around $463.9 million by 2018, at a developing ... through the TOC of the Asian Automatic patient billing ... provided. This also provides a glimpse of the segmentation ...
(Date:10/19/2014)... October 19, 2014 The report "Chocolate, ... Share, Trade, Prices, Geography Trend and Forecast (2011 - ... category, and geography and studies the major market drivers, ... America, Europe, and Asia. , The global chocolate market ... $98.3 billion in 2016 at an estimated CAGR of ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The ... Defense, & Homeland Security), Technology, Payload, Type & ... and segments the global unmanned ground vehicle market ... and forecasting of market sizes. The report also ... and opportunities impacting it along with the adoption ...
(Date:10/18/2014)... The “Human Insulin Market- by Product Type, [Human ... Insulin (Rapid Acting, Long Acting, Premixed)], by Brand ... Forecast to 2018” provides a detailed overview of ... trends, and strategies impacting the global human insulin ... the revenue and share analysis. , The global ...
Breaking Biology Technology:The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 2Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 5Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 2Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 3Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 5
... , ... , , , , ... 2100 bioanalyzer can,be used in combination with Standardized RT (StaRT)-PCR ... obtain highly reproducible, standardized gene expression,measurement with RT-PCR. The internal ...
... , , ... , , , This Application ... kit can be used to detect cell surface,and intracellular protein targets ... staining on CCRF-CEM cells and intracellular,glucocorticoid receptor (GR) staining of H4 ...
... , ... , , This Application Note describes ... be used to determine the efficiency,of transfection of mammalian cells using ... with,expression vectors encoding GFP from two different sources, and optimization,of transfection ...
Cached Biology Technology:Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 2Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 3Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 4Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 5Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 6Quantitative end-point RT-PCR gene,expression measurement using the,Agilent 2100 Bioanalyzer and,standardized RT-PCR 7Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 2Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 3Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 4Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 5Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 6Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 7Detection of antibody-stained cell,surface and intracellular protein targets,with the Agilent 2100 bioanalyzer 8Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 2Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 3Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 4Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 5Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 6Monitoring transfection efficiency by,green fluorescent protein (GFP) detection,with the Agilent 2100 bioanalyzer 7
... Error-free cloning of BAC (100+kb), fosmid ... Greater insert stability than any othe BAC ... for high yields and easy recombinant DNA ... or transcription-free (pSMART VC) vectors for the ...
Anti-Goat HRP-DAB Cell & Tissue Staining Kit...
CHIMAERIC HUMAN IgA2 ANTI NP...
... Cloning Kit includes the pZErO-2 ... selection in E. coli. The ... to eliminate high background. The ... reagents you need for simple ...
Biology Products: