Navigation Links
The importance of (experimental) design
Date:2/25/2014

There are clear advantages to living in cities: safety, ready availability of infrastructure, plenty of company etc. Nevertheless, a large number of people eschew them for the benefits of country life, such as clean air and lots of space. Many species of animals, and particularly birds, face the same choice between living in large groups or remaining in smaller ones, thereby avoiding disadvantages of larger colonies such as the increased risk of disease and increased aggression from neighbours. What causes different individuals of a particular species to take the decisions they do?

It's all in the genes

One possible explanation is that animals and birds might be genetically influenced to breed in smaller or larger colonies. This idea gained widespread acceptance in 2000, when Charles and Mary Brown reported the results of a field experiment of unprecedented scope. The Browns worked on Cliff Swallows, a species of American swallow that breeds in colonies of variable size. Some individuals appear to be more resistant to nest parasites so can breed in larger, more parasite-infested colonies where they can achieve higher foraging efficiencies by following their many neighbours to the insect swarms on which they feed. The scientists cross-fostered an astounding 2,000 nestlings from nests in small colonies to nests in large colonies and vice versa and recaptured over 700 of the birds when they returned to breed in the following years. Analysis of the data showed convincingly that swallows hatched in larger colonies (but reared in smaller ones) chose to breed in large colonies, whereas the reverse was true for swallows hatched in small colonies. In other words, the birds' choice is determined by genetic factors.

Or is it?

Appealing though the conclusion might be, something does not sound quite right. How would a genetic component of the choice of group size be selected and maintained throughout
'/>"/>

Contact: Richard Wagner
richard.wagner@vetmeduni.ac.at
43-148-909-15831
University of Veterinary Medicine -- Vienna
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
2. Study sheds new light on importance of human breast milk ingredient
3. Differences between human twins at birth highlight importance of intrauterine environment
4. Programming cells: The importance of the envelope
5. Video study shows which fish clean up coral reefs, showing importance of biodiversity
6. Gene discovery reveals importance of eating your greens
7. National survey highlights perceived importance of dietary protein to prevent weight gain
8. Emerging importance of computerized cognitive testing -- new therapies for dementia
9. Researchers have identified a novel immunological mechanism of great importance for vaccine developm
10. Keck award enables Carnegie Mellon and Stanford to dramatically expand crowdsourced RNA design
11. Report presents designs for study of cancer risks near US nuclear facilities
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The importance of (experimental) design
(Date:7/30/2014)... pledge of $1 million from the Cornelia Cogswell Rossi ... Biometry Center. , The newly established Connie ... to develop a greater breadth and depth of knowledge ... the pace of research to improve human health. , ... for the Laboratory and its external partners, supporting research ...
(Date:7/30/2014)... ranges and a changing climate threaten some of ... and so conservationists establish seed collections to save ... hopes of preserving some genetic diversity., For decades, ... models that offer a one-size-fits-all approach for how ... 50 seed samples regardless of species, pollination mode, ...
(Date:7/30/2014)... from Bjorn Brembs, professor of neurogenetics at the Institute ... figure allowing readers and reviewers to run the underlying ... important leap forward for scientific publishing, by demonstrating a ... scholarly output. , Figure 3 in fact doesn,t really ... to F1000Research , and the figure is generated ...
Breaking Biology News(10 mins):Rossi Foundation pledges $1M for JAX neurobehavioral research center 2Saving seeds the right way can save the world's plants 2F1000Research brings static research figures to life 2
... have so far won 19 grants worth a total of ... Recovery and Reinvestment Act. The grants range from $2 ... produce biological hydrocarbons for biofuels to $600,000 for a study ... the Ebola virus can inhibit a body,s antiviral response. Fifteen ...
... gene defect in mice has helped identify a new protein ... study by University of Iowa and Kansas State University researchers. ... open-access journal PLoS Genetics . In humans, ... yet most genes involved in hearing are unidentified. Mice are ...
... book demystifies bats and eliminates many myths surrounding rabies ... Lyssavirus Infections , combines current science about bat rabies ... The author, Denny G. Constantine, is widely considered one ... Rabies is intended for scientists and the general public. ...
Cached Biology News:Iowa State faculty attract $4.8 million in American Recovery and Reinvestment Act grants 2Iowa State faculty attract $4.8 million in American Recovery and Reinvestment Act grants 3Iowa State faculty attract $4.8 million in American Recovery and Reinvestment Act grants 4Forget the garlic necklace -- learn more about bats and rabies 2
(Date:7/30/2014)... July 30, 2014   Epic Sciences, Inc. ... novel diagnostics to personalize and advance the treatment and ... Gregory T. Lucier as chairman of Epic,s board ... of Life Technologies (formerly Invitrogen). Mr. Lucier joins Epic,s ... its circulating rare cell analysis platform with special focus ...
(Date:7/30/2014)... July 30, 2014 NCERC at ... will present his findings on corn stover pretreatment ... this week in Washington, D.C. , “Arun’s ... conference is a testament to the success of ... said. “Thanks to the foresight and vision of ...
(Date:7/30/2014)... 30, 2014 Adding to their already ... boat special – Buy 2 of any Weighing ... will benefit lab technicians looking for durable and reliable ... ideal for multiple applications including weighing liquids, solid, or ... choices including diamond-shaped, hexagonal, square, aluminum weighing, and standard ...
(Date:7/29/2014)... 2014 SoundConnect , an ... is proud to announce the strategic additions of ... their Boston, Charleston and Atlanta offices. SoundConnect’s ... demand for hosted solutions, collaboration and mobility that ... cost. , SoundConnect was founded in 2004, with ...
Breaking Biology Technology:Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 2Epic Sciences Appoints Greg Lucier as Chairman of the Board of Directors 3NCERC at SIUE Researcher Takes Stage at Department of Energy Conference 2NCERC at SIUE Researcher Takes Stage at Department of Energy Conference 3Weighing Boat Promotion Now Available at Pipette.com, Major Pipette Distributor 2SoundConnect Organization and Culture is Evolving 2
... plugs, cut the cords, and can the cables as we ... for all the freedom and mobility, we are nowhere without ... the like. That fact alone has turned the average business ... most obscure corner of airports and coffee houses. Indeed, Im ...
... Motorists driving along the DeNeveu Creek bridge on Highway 151 ... they drive over a bridge that uses a new method ... concern themselves with the cost of road construction may definitely ... road. , ,Instead of having a roadbed reinforced with a ...
... When it comes to consumer goods, America is addicted to ... to low prices, Wal-Mart is the biggest low-price outlet going. ... to get it. , ,The company that many Americans hate ... and activist groups have successfully derailed its growth plans in ...
Cached Biology Technology:Power for the people 2UW-Madison engineers apply award-winning technology to road building 2Wal-Mart: How low can you go? 2Wal-Mart: How low can you go? 3Wal-Mart: How low can you go? 4
See product name for description....
Whole blood is collected from healthy pigs (mixed breed, either sex) at the time of slaughter, refrigerated within 6 hours, processed within 24 hours and frozen at -20ºC....
... DNA-binding protein(DBP). Protein size: ... NP_001343 ELISA titre using peptide based ... for Western Blot: 1.0g/ml in ... HRP conjugated anti-Rabbit IgG should be diluted ...
...
Biology Products: