Navigation Links
Attractive birds more immune against bird flu

A research team at Uppsala University, Sweden has shown in a new study, published in the journal Acta Zoologica, that the size of the spot on a male collared flycatcher's forehead reflects how well the immune defence system combats viruses such as avian influenza. The white spot is also attractive to female birds searching for a mate.

Evolutionary biologists have long attempted to explain why individuals of a species differ in appearance and why the choice of a mate is influenced by behaviour and appearance features that cannot reasonably be thought to have any usefulness. Therefore, they have begun to look more and more at the genetics behind what are called secondary sexual characters, such as the tail of a peacock, the stripes of the female gulf pipefish, and the white spot on the forehead of the collared flycatcher. In many species both males and females prefer to mate with those who have the largest or most colourful of these ornaments or who have the most complex song, for instance.

One theory says that the ornaments are clearest on individuals that are in good health and that both the size and the condition of the ornament are heritable. This leads to the question of why evolution did not select the same appearance and good health for all individuals. Is there something in the environment that is constantly changing and can govern the genetics of appearance and health, leading, instead, to diversity?

"More and more evidence indicates that the most changeable part of the environment consists of parasites, bacteria and viruses. All of these, especially viruses, evolve more rapidly than the hosts whose resources they live off of. The host will therefore always be in an important evolutionary race against its diseases," explains Måns Andersson, who directs the research team.

In earlier studies, Andersson and Professor Lars Gustafsson have shown that male Gotlandian collared flycatchers with few dangerous blood parasites have large
'"/>

Source:Blackwell Publishing Ltd.


Page: 1 2

Related biology news :

1. Migratory songbirds have a specialized night-vision brain area
2. The lopsided brain: Attention bias is shared by humans and birds
3. Bobbing birds do it for a reason
4. Mother birds increase progesterone to hatch females
5. Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
6. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
7. Displaced songbirds navigate in the high Arctic
8. Oil spills and climate change double the mortality rate of British seabirds
9. Wild birds help to create human flu vaccine
10. Uniquely human component of language found in gregarious birds
11. Not just the birds
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Attractive birds more immune against bird flu

(Date:7/10/2014)... July 2, 2014  Unisys Corporation,s (NYSE: UIS ... Nederland N.V., today announced that it has been selected by ... manage a new Basic Provision Biometrics solution for penitentiaries across ... won the contract with a solution based on its open ... term of the contract is up to seven years, with ...
(Date:7/10/2014)... SHELTON, Conn. , July 2, 2014 NXT-ID, Inc., ... market, reports that CEO Mr. Gino Pereira was ... radio show in Tampa Florida . Mr. ... radio host Cedric Harris and how the Wocket™ ... secure alternative.  Cedric Harris tells ...
(Date:7/10/2014)... July 3, 2014 Research and Markets ... the "Global Gesture Recognition & Touch-Less Sensing ... to 2020" report to their offering ... Gesture Recognition & Touch-Less Sensing Market to Grow ... a while, but the companies were unable to ...
Breaking Biology News(10 mins):Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2
... Mich.---A new synthetic Petri dish coating could overcome a ... cell research, say University of Michigan researchers. Under ... yielding human therapies because the cells have been grown ... "These nondefined, animal-based components create issues with the ...
... economic stimulus program (ARRA) Health Information Technology for Economic ... of health information technology (HIT) and to ready a ... members of the American Medical Informatics Association (AMIA), a ... has advocated for informatics as a health care specialty. ...
... Troy, N.Y. Patrick Underhill, assistant professor in ... Rensselaer Polytechnic Institute, has won a prestigious Faculty ... Science Foundation (NSF). Underhill will use ... into how transport phenomena affect biological processes. He ...
Cached Biology News:New culture dish could advance human embryonic stem cell research 2AMIA Members Manage HITECH Stimulus Grant Awards 2Rensselaer Polytechnic Institute professor Patrick Underhill receives NSF CAREER award 2
(Date:7/11/2014)... -- , Not for release, publication or distribution ... jurisdiction where to do so would constitute a violation of ... ("Shire" or the "Company") (LSE: SHP, NASDAQ: SHPG ... has held a meeting with representatives of AbbVie. ... agreement or approval of AbbVie. A further update ...
(Date:7/11/2014)... , July 11, 2014  Researchers have ... three-dimensional images. The new technology, called Virtual Finger, ... small structures like neurons and synapses using the ... unique technology makes 3D imaging studies orders of ... at an unprecedented level across many areas of ...
(Date:7/10/2014)... Understanding the need for better quality ... the gap that currently exists in this area, ChanTest ... portfolio of validated ion channel and GPCR cell lines. ... as ion channels control many critical physiological functions throughout ... the potential to treat a variety of human diseases. ...
(Date:7/10/2014)... 10, 2014 EvoDerma ’s NOOME Anti-Aging ... rejuvenating device now comes with a second treatment cup to ... , The new cup is thinner on the edges for ... target rough, thin and uneven surfaces on the face, neck ... a stimulating treatment on areas such as the cheeks and ...
Breaking Biology Technology:Shire plc - Statement re: Media Speculation 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 2Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 3Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2
... venture investors have fewer secrets these days, and they ... early-stage executives during the National SBIR-STTR Conference. , ,In ... the University of Wisconsin-Madison , they counseled technology ... sustainable market advantage, and what each round of funding ...
... - Quintessence Biosciences , a biopharmaceutical company ... its EVade cancer treatments, has been selected for preclinical ... that pending a favorable preclinical safety assessment, it would ... an investigational new drug application in late 2007, ...
... Milwaukee, Wis. - The University of Wisconsin-Milwaukee ... for its incorporation of a content storage and collaboration ... , ,The PantherFile system, powered by Xythos Software ... 100, a group of organizations that invest in innovative ...
Cached Biology Technology:Early-stage executives hear from investors 2Early-stage executives hear from investors 3
... With increasing age, the autofluorescent pigment ... many cell types, including neurons. The ... the use of fluorescence microscopy in ... its broad excitation and emission spectra, ...
One unit is equal to 10Kb (insert DNA + vector). The final cost will increase or decrease according to the final assembled genome size. The price does not include genome annotation....
... to the family of calcium binding proteins such ... composed of an alpha and beta chain whereas ... S100 protein is also expressed in the antigen ... skin and interdigitating reticulum cells in the paracortex ...
Polyclonal Antibody to Golgin-67...
Biology Products: