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:6/25/2015)... LAKE CITY , June 25, 2015  Imagine ... first steps toward a healthier, happier life. That,s exactly ... is designed to do. The cutting-edge, portable health program ... offers real-life solutions to help improve your lifestyle and ... Association awards dinner and gala Wednesday night, USANA,s THA ...
(Date:6/24/2015)... DUBLIN , June 22, 2015 ... has announced the addition of the "Huawei ... Analysis" report to their offering. ... going to the opposite direction than Apple,s and ... innovative fingerprint sensor developed by Fingerprint Cards, a ...
(Date:6/23/2015)... GARDENS, Fla. , June 23, 2015 ... identity management and authentication solutions, today announced enhanced ... strong, multi-factor authentication solution.  The enhancements build ... use of the DigitalPersona Altus platform and ... reader compatibility. In today,s environment ...
Breaking Biology News(10 mins):@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2
... are reporting this week new study results they say provide ... from bone marrow for patients suffering from acute lung injury, ... intensive care units. Led by Drs. Michael A. Matthay ... the University of California, San Francisco, the team writes in ...
... Chemical Society (ACS) and the Council for Chemical ... address the critical challenge of keeping the United States, chemical ... will play in this process. Entitled "Translational Chemical R&D: The ... Sunday, Aug. 22, during the ACS National Meeting & Exposition ...
... Scientists researching the causes and effects of hypoxia in Green ... for the first year of an anticipated four-year $1,367,300 project ... has been a problem for decades, and recent evidence suggests ... zones" and fish kills to become both more frequent and ...
Cached Biology News:Using bone marrow stem cells to treat critically ill patients on verge of respiratory failure 2Using bone marrow stem cells to treat critically ill patients on verge of respiratory failure 3American Chemical Society, Council for Chemical Research to hold R&D symposium Aug. 22 2American Chemical Society, Council for Chemical Research to hold R&D symposium Aug. 22 3NOAA awards grant to investigate impacts of land use and climate change on hypoxia in Green Bay 2
(Date:6/30/2015)... ... , ... Students and faculty from Beijing City University will ... Biotechnology,” an applied biotechnology course team-taught by faculty members from both institutions. The ... both universities and is taught on both continents. , “Our alliance with Beijing ...
(Date:6/30/2015)... 2015  Juniper Pharmaceuticals, Inc. (Nasdaq: JNP ), ... that address unmet medical needs in women,s health, ... will present at the Cantor Fitzgerald Inaugural Healthcare ... , 4:45 PM EDTLocation: , Le Parker Meridien ... www.juniperpharma.com, under  ,Investor, or  click here ...
(Date:6/30/2015)... (PRWEB) , ... June 30, 2015 , ... ... services to the federal government, announced in a paper published this week in ... a potential problem with the diagnostic techniques currently used to detect the Ebola ...
(Date:6/30/2015)... 30, 2015  Custom Computer Specialists, Inc. ("Custom"), a ... are silver sponsors of the Primary Care Development Corporation,s ... is lending their support of PCDC,s mission to expand ... Since its founding in 1993, PCDC has been a ...  PCDC has financed over 100 completed primary care projects, ...
Breaking Biology Technology:Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2Juniper Pharmaceuticals to Present at Cantor Fitzgerald Inaugural Healthcare Conference on July 8, 2015 2Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 2Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 3Noblis and Government Scientists Identify New Genomic Signatures of Ebola Using Whole Genomic Sequencing and Innovative BioVelocity Analytics Tool 4Custom Computer Specialists Announces Sponsorship Of The Primary Care Development Corporation's Corporate Circle 2
... A sensitive and simple high performance liquid chromatograph tandem ... of the metabolites of four nitrofuran antibiotics in chicken tissue. ... , The animal ... and derivatization followed by liquid-liquid (L-L) extraction before analysis. The ...
... of nucleotide and nucleoside analogs from Taraxacum mongolicum, a ... using liquid chromatography tandem mass spectrometry (LC/MS/MS). The active ... nucleoside standards with product and precursor scans of tandem ... major active ingredients which have anti-Herpes simplex virus type ...
... are difficult or generally not to analyse by GC/MS, , ... solvent extraction , and fast cleanup ... The drawback of MS/MS methods is laborious parameter optimization for , ... significantly be reduced by the use , ...
Cached Biology Technology:High sensitivity quantitation of metabolites of nitrofuran antibiotics in animal tissue using LC/MS/MS 2High sensitivity quantitation of metabolites of nitrofuran antibiotics in animal tissue using LC/MS/MS 3Isolation and Characterization of Anti-Viral Nucleoside Compounds from the Chinese Herb Taraxacum Mongolicum 2Isolation and Characterization of Anti-Viral Nucleoside Compounds from the Chinese Herb Taraxacum Mongolicum 3Simultaneous Determination of Residues of Approximately 100 Pesticides , and Metabolites in Fruit and Vegetables by LC/MS/MS 2Simultaneous Determination of Residues of Approximately 100 Pesticides , and Metabolites in Fruit and Vegetables by LC/MS/MS 3Simultaneous Determination of Residues of Approximately 100 Pesticides , and Metabolites in Fruit and Vegetables by LC/MS/MS 4Simultaneous Determination of Residues of Approximately 100 Pesticides , and Metabolites in Fruit and Vegetables by LC/MS/MS 5Simultaneous Determination of Residues of Approximately 100 Pesticides , and Metabolites in Fruit and Vegetables by LC/MS/MS 6