Navigation Links
Birdsong independent of brain size
Date:6/13/2011

same species sex differences between two sets of birds, those that sing differently, namely the dominant males and females, and those that sing identically, namely the subordinate males and females", says Manfred Gahr from the Max Planck Institute for Ornithology in Seewiesen.

The results of the study took the scientists by surprise, as the sex difference they observed turned out to vary with the social status of the birds. The researchers initially found what they expected based on the traditional hypothesis the dominant males had a far larger song nucleus HVC, which was three times the size of that in the females. However, when they compared the subordinate males and females, both of which sing the same duet song, the male HVC was still twice as big as the female HVC. Another brain area, the RA nucleus, which is also responsible for the production of the song, displayed the same pattern. The size differences are mainly due to the higher number of neurons found in these brain areas. Interestingly, no differences were observed in area X, a region of the brain that plays a role in song learning.

An entirely different picture emerged, however, from examination of the gene activity in the HVC. The activity patterns of two genes that code for synapse proteins proved to be far better correlated with the birds' polymorphic song behaviour than the size of their brain areas. When they compared the gene activity patterns in the subordinate males and females, the scientists discovered equal levels of activity for both sexes. However, in dominant females, both genes were markedly more active than in the dominant males.

The findings of the various male-female comparisons do not coincide with the accepted view of the regulation of sex differences in the brain and behaviour. If it is assumed that the greater number of neurons found in the brain of the dominant males is necessary for the singing of the complex solo song, then the sex difference in the
'/>"/>

Contact: Manfred Gahr
gahr@orn.mpg.de
49-815-793-2276
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. CCNY, CSHL biologists find birdsong of isolates reverts to norm over several generations
2. CIC Named to Independent Research Firms Hot Banking Tech Companies to Watch in 2009 Report
3. CIC to Host Webinar Featuring Independent Research Firm: Enabling Straight Through Processing - Why the Insurance Industry Needs Electronic Signature Technology
4. LocatePLUS Announces Election of Independent Board
5. First cGMP feeder-independent pluripotent stem cell banks released for distribution
6. A global model for the origin of species independent of geographical isolation
7. New insight into chromosome segregation: Centromere-independent kinetochore assembly
8. Penn biophysicists create new model for protein-cholesterol interactions in brain and muscle tissue
9. During exercise, the human brain shifts into high gear on alternative energy
10. Millisecond brain signals predict response to fast-acting antidepressant
11. Food for thought -- regulating energy supply to the brain during fasting
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Birdsong independent of brain size
(Date:6/30/2015)... 2015 To bolster its efforts and commitment to ... today the addition of two new team members. ... and David Raviv will act as head of ... commitment to providing the most secure solutions for the enterprise ... Layer 7 Technologies, a provider of security and management products, ...
(Date:6/25/2015)... , June 25, 2015  Imagine a tool ... toward a healthier, happier life. That,s exactly what USANA,s ... to do. The cutting-edge, portable health program provides a ... solutions to help improve your lifestyle and nutrition. ... dinner and gala Wednesday night, USANA,s THA was honored ...
(Date:6/24/2015)... , June 22, 2015 ... announced the addition of the "Huawei Ascend ... report to their offering. Huawei,s ... to the opposite direction than Apple,s and Samsung,s ... fingerprint sensor developed by Fingerprint Cards, a main ...
Breaking Biology News(10 mins):HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2
... the Advancement of Science (AAAS) has named Dr. J. ... University of Colorado School of Medicine, as winner of ... Award., Cohen was honored for his outstanding achievements in ... series of free lectures on science and medicine, informal ...
... ANN ARBOR, Mich.---Rising carbon dioxide levels associated with global ... that eat them, altering the course of plant evolution, ... The research focused on the effects of elevated carbon ... of many plants that produce toxic or bitter chemical ...
... short stature is not usually cause for concern, but it ... syndrome. Prevalent in girls, Turner syndrome is a genetic defect ... problems. It is not commonly detected until age 10 or ... This lag before diagnosis of the condition can delay ...
Cached Biology News:Immunologist J. John Cohen receives the 2010 AAAS Public Understanding of Science and Technology Award 2Immunologist J. John Cohen receives the 2010 AAAS Public Understanding of Science and Technology Award 3Immunologist J. John Cohen receives the 2010 AAAS Public Understanding of Science and Technology Award 4Global warming may reroute evolution 2New test shows promise for accurate diagnosis of Turner syndrome 2
(Date:7/30/2015)... July 30, 2015   Senomyx , Inc. (NASDAQ: ... science technologies to discover, develop, and commercialize novel flavor ... today reported financial results for the second quarter 2015. ... 2015, we remain on track to achieve our commercial ... Executive Officer of the Company. "Since our last quarterly ...
(Date:7/30/2015)... July 30, 2015 HIGHLIGHTS:Q2 2015 ... 2014) , Reported sales were $697 million compared ... Sales grew organically by 8%, and changes in foreign ... increased sales by 1%. , By business unit, ... Applied and 11% in SAFC Commercial. , Reported ...
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's Pony™ ... for continuous operation up to 1500 bar. The sanitary design gauge of the ... toxic contamination. , The Pony™ NS2006L homogenizer is an ideal solution for the ...
(Date:7/29/2015)... -- According to a new market research report, ... (2015-2020), , published by Mordor Intelligence, the Global market is ... of 2020, with North America being ... the global market size. The Global market for Stem Cells ... the period of (2015-2020).      (Logo: http://photos.prnewswire.com/prnh/20150428/740799) , ...
Breaking Biology Technology:SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 2Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 3Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 4Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 5Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 6Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 7Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 8Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 9Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 10Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 11Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 12Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 13Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 14Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 15Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 16Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 17Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 18Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 19Sigma-Aldrich (NASDAQ - SIAL) Reports Q2 2015 Sales Of $697 Million And Adjusted Diluted EPS Of $1.01 20GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3
... Tumor Protection In Vivo; Lead Candidate May Have Utility ... ... SAN DIEGO, CA, Sept. 24 /PRNewswire-FirstCall/ - Nventa,Biopharmaceuticals Corporation ... lead therapeutic vaccine candidate for the treatment,of human papillomavirus (HPV)-related ...
... Detection of HPV Viral Load a Possible Indicator of Cervical ... ... Sept. 24 Cepheid (Nasdaq:,CPHD) today announced that it has entered ... held by Quantovir,AB of Sweden for the quantitative measurement of high-risk ...
... September 24 ProImmune Ltd., a leading,provider of quality ... antigen discovery, has announced the launch of its new,MHC-peptide ... the series of,discovery services for Class I HLA already ... binding assay for HLA alleles DR1-4, is a,powerful cell-free ...
Cached Biology Technology:Nventa announces publication of HspE7 data 2Nventa announces publication of HspE7 data 3Nventa announces publication of HspE7 data 4Nventa announces publication of HspE7 data 5Cepheid Enters Agreement To Exclusively License HPV Portfolio Developed by Quantovir AB 2Cepheid Enters Agreement To Exclusively License HPV Portfolio Developed by Quantovir AB 3Cepheid Enters Agreement To Exclusively License HPV Portfolio Developed by Quantovir AB 4ProImmune Launches New MHC-Peptide Binding Assay for Class II HLA Alleles 2
FEN-1 (B-4)...
Secure-Seal™ spacer, one well, 20 mm diameter, 0.12 mm deep *set of 100*...
Mouse monoclonal [2D7/1] to E.coli LPS ( Abpromise for all tested applications). Antigen: Tissue / cell preparation: Escherichia coli J5 cells....
Rat Antibody to Mouse TCR VB8.1,8.2:FITC Recognises the V beta 8.1 and V beta 8.2 determinants of the murine T cell receptor. Specificity: mouse TCR VB8.1 and 8.2...
Biology Products: