Navigation Links
Bird-brained? Birds' personalities are correlated with their hormone levels
Date:11/29/2010

The Great Tit is a common garden bird of many countries in Europe and Asia. Great Tits are generally thought of as fairly inquisitive but it has long been known individuals vary considerably in their willingness to explore new surroundings. Some birds known as "fast" or "proactive" are quick explorers and are comparatively aggressive, whereas "slow" or "reactive" birds are more cautious. The differences are at least in part genetically determined and as a result scientists in Holland, with whom the Vienna group has been collaborating closely, have been able to use this behavioural trait as a basis for selecting lines over several generations.

Stwe measured the breakdown products of glucocorticoid hormones in the droppings of great tit nestlings of both "fast" and "slow" lines. She found that slow nestlings excreted more glucocorticoids than "fast" ones. She also notived that subjecting nestlings to stress caused an increase in the amounts of glucocorticoids they excreted. The rise was far more dramatic in fast nestlings than in slow ones, showing that the more proactive birds respond more intensely to stress than less curious individuals.

Stwe's results indicate for the first time that birds that have been genetically selected on the basis of their levels of curiosity show pronounced differences both in their baseline levels of stress hormones and in their reactions to stress. Interestingly, these factors are known to be important indicators of the young birds' future survival and the novel findings would suggest that the "fast" birds might have certain advantages over slower individuals. Clearly, however, environmental factors are also important in determining survival and there must be circumstances that favour less inquisitive birds: when a large number of predators are around, fortune may no longer favour the bold. Variation in the behaviour of the "bird-brained" Great Tit is presumably important in helping the species cope wit
'/>"/>

Contact: Dr Mareike Stoewe
mareike.stoewe@vetmeduni.ac.at
43-664-454-1904
University of Veterinary Medicine -- Vienna
Source:Eurekalert

Page: 1 2

Related biology news :

1. Captain Birdseyes robotic nose
2. Beavers: Dam good for songbirds
3. Genetic evidence for avian influenza movement from Asia to North America via wild birds
4. Practice as well as sleep may help birds learn new songs
5. The birds of Spain, in a digital ornithological encyclopedia
6. Shade coffee benefits more than birds
7. Birds in Flint Hills of Kansas, Oklahoma face population decline despite large habitat
8. Climate change affecting Europes birds now, say researchers
9. Female birds jam their mates flirtatious songs
10. Its for the birds
11. CCNY, CSHL biologists find birdsong of isolates reverts to norm over several generations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2014)... on the verge of an economy driven by methane, the ... and is undergoing a production boom. It has poised the ... is casting serious doubts over just how climate-friendly it is, ... (C&EN), the weekly news magazine of the American Chemical ... at C&EN, explains that when burned as a fuel to ...
(Date:7/9/2014)... Can thyroid hormone protect neuronal function and increase ... Ailing Fu and her team, School of Pharmaceutical ... in which aged mice were administered with low ... showed that the aged rats exhibited an obvious ... rate from 60% to 93%. The underlying mechanism ...
(Date:7/9/2014)... They are amongst the most numerous inhabitants of the ... . Not visible to the naked eye, when they ... sized patches, they are even visible on satellite images. ... responsible for approximately half of the global photosynthesis output," ... University Jena (Germany). In the process the greenhouse gas ...
Breaking Biology News(10 mins):Short circuit in the food web 2
... of scientists, including University of Colorado School of Medicine ... disease related to an inability to process Vitamin B12. ... "Some people with rare inherited conditions cannot process vitamin ... a geneticist and senior author of a paper about ...
... key role in preserving biological diversity. A new study carried ... (SLU), among others, indicates that if the world,s religious leaders ... positioned to do so. Our study investigates how ... they overlap areas that are important for global biological diversity, ...
... $4.5 million over the next five years for a ... detecting disorders and conditions can and should become a ... one of four projects launched today by the National ... providing genetic sequencing as part of, or instead of, ...
Cached Biology News:Peering into genetic defects, CU scientists discover a new metabolic disease 2Peering into genetic defects, CU scientists discover a new metabolic disease 3Religious leaders can be key to biological diversity 2UCSF receives $4.5M to study value of gene sequencing in newborns 2UCSF receives $4.5M to study value of gene sequencing in newborns 3UCSF receives $4.5M to study value of gene sequencing in newborns 4
(Date:1/15/2014)... , Jan. 15, 2014 TaiGen Biotechnology Company, Limited ... agreement with R-Pharm, a leading Russian pharmaceutical company, to ... Russian Federation , Turkey ... States (CIS). Nemonoxacin is a novel antibiotic for the treatment ...
(Date:1/14/2014)... CA (PRWEB) January 14, 2014 Histogen, ... the products of cells grown under simulated embryonic conditions, ... license agreement with Suneva Medical, Inc. for physician-dispensed aesthetic ... , This agreement is an amendment to ...
(Date:1/14/2014)... 14, 2014 EquitiesIQ, a leading informational ... ALQA). Alliqua is an emerging biomedical company acquiring, developing, ... care market. , Free report download: http://equitiesiq.com/reports/alliqua/ ... seasoned management team and Board, which launched the company’s ...
(Date:1/14/2014)... 14, 2014 iLab Solutions, the leader in ... new Director of Product Strategy. In this role, Michelle will ... sub-teams to guide in the development of iLab products. Her ... maximum possible benefit to the scientific community by offering the ...
Breaking Biology Technology:TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2
... Inc., a developer of innovative therapeutics for diseases ... results for the company,s lead product candidate, OTO-104, ... demonstrated that a single intratympanic (IT) injection of ... corticosteroid dexamethasone, provided significant protection against both noise-induced ...
... Feb. 22, 2011 Jennerex, Inc. (San ... appointment of James M. Burke, M.D. to the newly-created ... be responsible for all global clinical research activities related ... has been working with Jennerex in an advisory capacity ...
... KONG, Feb. 22, 2011 /PRNewswire-Asia-FirstCall/ -- China Cord Blood Corporation ... first and largest cord blood banking operator in China, today ... was held on February 18, 2011, in Hong Kong. ... Albert Chen and Mark Chen to serve on the Board ...
Cached Biology Technology:Otonomy's OTO-104 Demonstrates Hearing Loss Protection and Hearing Recovery in Preclinical Studies 2Otonomy's OTO-104 Demonstrates Hearing Loss Protection and Hearing Recovery in Preclinical Studies 3Jennerex Appoints James M. Burke, M.D. Vice President, Clinical Research 2China Cord Blood Corporation Announces Results of 2010 Annual General Meeting 2
... The APO-BRDU Kit is a two ... and total cellular DNA to detect apoptotic ... the instructions and reagents required for measuring ... control cells for assessing reagent performance; washing, ...
... CHEMICON APO-BRDU Kit is a ... breaks and total cellular DNA to detect ... kit contains the instructions and reagents required ... and negative control cells for assessing reagent ...
... with temperature probe, 100-120 and 220-240 V, supports ... and 400 W. The temperature probe is used ... degrees C during electrophoresis. Built-in infrared capability allows ... are provided. Dimensions are 27.5 x 34 x ...
The Trans-Blot Plus gel and cassette assembly tray is used to hold the Trans-Blot Plus gel holder cassette, buffer, and other materials for the gel and membrane sandwich during their assembly....
Biology Products: