Navigation Links
Divergent life history shapes gene expression in brains of salmon

Scientists working with salmon have found that gene expression in the brain can differ significantly among members of a species with different life histories. Their study indicates that roughly 15 percent of Atlantic salmon genes show differential expression in males who migrate from their freshwater birthplaces to mature in oceans versus those who do not leave the freshwater environment to mature.

The researchers, at Harvard University, the University of Massachusetts and the US Geological Survey, report the finding in the current issue of Proceedings of the Royal Society B. They compared female salmon, male salmon that will eventually undertake the well-known journey from their river birthplaces to oceans ? and then migrate heroically back upstream one to three years later to spawn ? and males of the same age known as "sneakers" that mature at greatly reduced size without leaving freshwater.

"The finding that hundreds of the nearly 3,000 genes we studied were expressed differently in the brains of sneakers and other male salmon came as a surprise," says Nadia Aubin-Horth, a postdoctoral researcher in the Bauer Center for Genomics Research in Harvard's Faculty of Arts and Sciences. "Since these males of the same species in the same wild environment differed only in their life history, we did not expect the expression of so many of their genes to differ."

Aubin-Horth and her colleagues were also surprised by some of the 17 separate classes of genes demonstrating differing activity levels.

"It makes sense that growth genes are suppressed in sneakers and genes associated with reproduction are expressed more, since these fish essentially trade bodily size for faster reproductive maturity," she says. "However, it was unexpected, for instance, that genes associated with learning and memory would be expressed at higher levels in the brains of sneakers. It's not yet clear why disparities like this would arise."

Aubin-Horth says it is
'"/>

Source:Harvard University


Page: 1 2

Related biology news :

1. Divergent mating systems and parental conflict as a barrier to hybridization in flowering plants
2. Restaurant seafood prices since 1850s help plot marine harvests through history
3. Finding rewrites the evolutionary history of the origin of potatoes
4. Illinois pig to make history as source of first complete swine genome
5. Coral stress like never in history
6. Ocean seep mollusks may share evolutionary history with other deep-sea creatures
7. Microfossils unravel climate history of tropical Africa
8. Pleasing plant shapes explained by new computer model
9. Gene linked with mental illness shapes brain region, researchers find
10. Alcohols effects on gene expression in the central nervous system
11. Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Divergent life history shapes gene expression brains salmon

(Date:3/12/2015)... IriTech, a leading iris based identity management ... Instruments Design Network, announced today that the Chief Minister ... USB MK2120U device during a launching event of Andhra ... The iris scanner is manufactured by U.S. ... India through its Indian partner, Biometronic ...
(Date:3/11/2015)... , Mar. 11, 2015 Research and Markets ... of the "Access Control Market by Product, Application ... 2020" report to their offering. , ... expected to reach $10.4 billion by 2020, with an ... market report covers the products types such as contact ...
(Date:3/10/2015)... --  Tute Genomics , pioneer in affordable, accurate and ... company PrimBio Research Institute to be its ... interpretation. PrimBio, a certified Life Technologies Ampliseq ... to support the work of experts on the front ... of exome sequencing services: 1) Targeted Exome and 2) ...
Breaking Biology News(10 mins):Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 3Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 2PrimBio Research Selects Tute as Whole Exome Analysis Provider, Creating Integrated, End-to-End Solution for Next-Generation Sequencing & Data Analysis 3
... British Columbia and the Smithsonian Institution have discovered a sensory ... and may help explain their enormous size. ... fin, minke and humpback whales. They are characterized by a ... the navel. The blubber expands up to several times its ...
... of bark beetles that have bored their way through more than ... the 1990s do more than damage and kill stately pine, spruce ... make trees release up to 20 times more of the organic ... appears in ACS, journal Environmental Science & Technology . ...
... Sciences (ICFO) has developed a technique to measure internal ... be useful when distinguishing healthy cells from cancerous ones, ... Temperature controls many of the cell,s life processes, ... led by the Institute of Photonic Sciences (ICFO), which ...
Cached Biology News:A whale of a discovery: New sensory organ found in rorqual whales 2A non-invasive intracellular 'thermometer' with fluorescent proteins has been created 2
(Date:3/30/2015)... San Francisco, CA (PRWEB) March 30, 2015 ... and tax incentives provided you the government, major companies ... state and local governments setting future mandates for renewable ... power as an option. , Solara Power is a ... to several incentive programs available that allow qualifying homeowners ...
(Date:3/30/2015)...  New Jersey Health Foundation, a not-for-profit organization that ... New Jersey , has committed $1 ... James M. Golubieski , president. Through ... an additional $500,000 will be available for awards of ... projects that demonstrate exciting potential and may lead to ...
(Date:3/30/2015)... 30, 2015  Spherix Incorporated (Nasdaq: SPEX ... fostering and monetization of intellectual property, today provided ... 3:13-cv-03494-M and  Spherix v. Uniden , Case No. ... for the Northern District of Texas ... v. Verizon, Case No. 1:14-cv-00721-GBL-TCB, in the ...
(Date:3/30/2015)... MADISON, Wis. , March 30, 2015 /PRNewswire/ ... 4901) ("Fujifilm") and Cellular Dynamics International, Inc. (CEO: ... a leading developer and manufacturer of fully functioning human ... that the two companies have entered into a definitive ... tender offer to be followed by a second step ...
Breaking Biology Technology:Solara Power Announces Residential Solar Power with No Up-Front Fees 2New Jersey Health Foundation Announces An Additional $1 Million To Fund Innovation and Research Grants in New Jersey 2Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 2Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 2Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 4Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 5Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 6Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 7Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 8
... researchers have developed new technology capable of removing ... efforts following nuclear disasters. The innovation could ... up millions of tonnes of water contaminated by ... waste. Professor Huai-Yong Zhu from QUT Chemistry ...
... DIEGO, Nov. 2, 2011 Cadence Pharmaceuticals, Inc. (NASDAQ: ... in-licensing, developing and commercializing proprietary products principally for use ... President and CEO Ted Schroeder will present the company,s ... Mountain Time (3:30pm Eastern Time) during the Credit Suisse ...
... Axia Value Chain, a market leader in business transformation ... their Life Sciences and Health Care Practice Group. In ... global clients in the Health Care and Life Science ... practice development, and service offerings concentrating on alignment of ...
Cached Biology Technology:Technology makes storing radioactive waste safer 2Axia Value Chain Appoints John Christina Managing Director of Life Sciences Practice 2
Thermo Forma provides an array of accessory Racks for the Cryo/CryoPlus 16" Diameter storage system. To maximise inventory capacity a Jumbo Arrowhead configuration is recommended. You may choose betw...
... high durability and capacity with unequalled ease ... prevents vibration, allowing the unit to run ... part, from the large rubber block vibration ... platform is designed to last through years ...
The Holten Horizontal series of laminar airflow work benches offers comfort and ease of use....
... Incubated Orbital Shakers combine high durability ... and ease of use. The patented ... the unit to run at high ... unit's class-leading temperature range is delivered ...
Biology Products: