HOME >> BIOLOGY >> NEWS
'Stress and the city': Urban birds keep cool

Animals colonizing cities are exposed to many novel and potentially stressful situations. Chronic stress, however, can cause deleterious effects. Hence, wild animals would suffer from city life unless they adjusted their stress response to the conditions in a city. Jesko Partecke, Ingrid Schwabl and Eberhard Gwinner of the Max Planck Institute for Ornithology Andechs/Seewiesen in Germany have now shown that European blackbirds born in a city have a lower stress response than their forest counterparts. This reduced reactivity probably has a genetic basis and could be the result of the urban-specific selection pressures to which urban blackbirds are exposed (Ecology 87(8) 2006).

Many species have developed a symbiotic relationship with humans. For example, European blackbirds, European starlings and house sparrows thrive in concrete habitats around the globe. The sparrow is now so closely associated with man that its original niche is unknown, whereas the European blackbird was - as little as 200 years ago - a reclusive forest dweller. These species seem to profit, for instance, by the warmer microclimate and additional anthropogenic food supply in cities. However, they are also confronted with many novel and potentially stressful anthropogenic disturbances, such as the permanent presence of humans, higher densities of cats and dogs, noise and light pollution as well as traffic.

Among the physiological coping mechanisms used by vertebrates - including humans - to ensure survival under adverse environmental conditions is the acute stress response, characterised by the release of glucocorticoid steroid hormones. The acute short-term secretion of these hormones is considered beneficial in that it helps to mediate adaptive behavioural and physiological responses. In prolonged stress situations, however, chronically elevated levels of circulating glucocorticoids can impair reproductive, immune, and brain functions. Thus, wild animals would suffer from
'"/>

Contact: Dr. Jesko Partecke
partecke@orn.mpg.de
49-815-237-3130
Max-Planck-Gesellschaft
1-Sep-2006


Page: 1 2 3

Related biology news :

1. Urban sediments after Hurricanes Katrina, Rita contained high levels of contaminants
2. Urbanization favors sedentary males
3. Urban Wildlife Management book something to crow about
4. On the loose: Urban coyotes thrive in North American cities
5. Urban ecology study witnessing the birth of a designer ecosystem
6. Art and music for the birds
7. What determines the speed at which birds fly?
8. Brightly colored birds most affected by Chernobyl radiation
9. Aphids make chemical weapons to fight off killer ladybirds
10. Study investigates divorce among Galapagos seabirds
11. Duetting birds with rhythm present a greater threat

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Stress and the city Urban birds keep cool

(Date:3/20/2015)... Markets ( http://www.researchandmarkets.com/research/vkzvcs/iris_biometrics ) has announced the addition ... report to their offering. This report analyzes ... report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... . Annual estimates and forecasts are provided for ...
(Date:3/18/2015)... March 18, 2015 As mobile payments ... revolutionary smart wallets and apps continue to be introduced into ... in the mobile payment industry in focus today are:  NXT-ID, ... (NYSE: BABA ), Apple Inc. (NASDAQ: ... Facebook Inc. (NASDAQ: FB ) NXT-ID, ...
(Date:3/17/2015)... Emotient, the leader in facial expression ... availability of Emotient Analytics , the world,s ... facial expressions. The system analyzes videos of people ... services. It delivers audience response metrics - such ... derived from facial evidence of emotional states. Consumer ...
Breaking Biology News(10 mins):Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 2Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 6New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 2New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 3New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 4
(Date:4/24/2015)... and Tempe, AZ (PRWEB) April 24, 2015 ... and Arizona State University (ASU) have entered into an ... projects. , A memorandum of agreement signed by the ... distance learning, student success and other services particularly, though ... , “We have complementary strengths and a similar ...
(Date:4/24/2015)... - Mirego, leader in mobile strategies and solutions, is proud ... extensions for the all new Apple Watch. Made in ... MediaMiser, these extensions will reinvent the way users receive and ... use.  Available today in Canada ... smartwatch that makes for an excellent buddy for business, health ...
(Date:4/23/2015)... 23, 2015 Athena San Diego, an ... executive women in San Diego’s technology and life science ... Pinnacle Awards at their Gala on April 30, 2015 ... now at http://athenasd.org/events/ , The Pinnacle Awards ... San Diego vision of fostering networking, risk taking and ...
(Date:4/23/2015)... 23, 2015  Neurocrine Biosciences, Inc. (Nasdaq: NBIX ... first quarter 2015 results before the Nasdaq market opens ... a live conference call and webcast to discuss its financial ... 30, 2015 at 8:00 a.m. Eastern Time (5:00 a.m. ... conference call by dialing 866-952-1906 (US) or 785-424-1825 (International) ...
Breaking Biology Technology:South Dakota Mines, Arizona State University Pave Way for Cooperative Research 2Familiprix, OMSignal and MediaMiser apps available today for Apple Watch 2Athena Pinnacle Awards to Honor Executives, Corporations and Educators Working to Promote Women Leaders 2Neurocrine Biosciences Announces Conference Call and Webcast to Report First Quarter 2015 Results 2
Cached News: