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:8/25/2015)... BELLEVUE, Wash. , Aug. 25, 2015 ... systems, announced today it will unveil its "Guardian S" ... at the National Tactical Officers Association Conference on August ... Guardian S is the first-ever commercially available energetically autonomous ... research and in-field trials and is protected by more ...
(Date:8/20/2015)... , Aug. 20, 2015 The wearable ... that are active and healthy. However, wearable technology ... hospital environment to help improve diagnostic capabilities and ... from the Wearable Technologies Conference 2015 , ... applications for wearables in healthcare.    ...
(Date:8/19/2015)... 19, 2015  VOXX International Corporation (Nasdaq: ... into a Definitive Agreement to purchase the assets, ... market leader EyeLock through an acquiring entity.  Upon ... controlling interest in the acquiring entity. The closing ... due diligence.  Expanding on its existing supply chain ...
Breaking Biology News(10 mins):Sarcos to Debut First-of-its-Kind Snake Robot 2Sarcos to Debut First-of-its-Kind Snake Robot 3Leaf Healthcare Releases Video from Wearable Technology Conference on New Applications for Wearables in the Hospital Environment 2Leaf Healthcare Releases Video from Wearable Technology Conference on New Applications for Wearables in the Hospital Environment 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 2VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 4VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 5
(Date:8/26/2015)... 2015  Platform therapeutic company Symic Biomedical, Inc. ... $1.5M Phase II SBIR grant from the National ... therapeutic agent to reduce arteriovenous fistula (AVF) failures, ... renal disease (ESRD) patients undergoing hemodialysis. The two-year ... and Digestive and Kidney Diseases (NIDDK), will allow ...
(Date:8/26/2015)... HONG KONG , Aug. 26, 2015 ... "Company"), China,s leading provider of ... and stem cell storage services, today announced that the ... Holdings Limited ("MO2"), an entity wholly owned by Mr. ... the Company, has acquired the outstanding shares (the "Shares") ...
(Date:8/26/2015)... ... August 26, 2015 , ... PRC Clinical, ... new business relationships with local sponsors in southern California. The Clinical Trial Management Expert ... development processes and regulatory pathways., , Stem Cell Meeting ...
(Date:8/25/2015)... ... August 25, 2015 , ... A new optical ... is described by University of Illinois researchers in the Journal of Biomedical ... In “ Breast cancer diagnosis using spatial light interference microscopy ,” published 20 ...
Breaking Biology Technology:Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 2Symic Biomedical Awarded $1.5MM NIH Phase II SBIR Grant to Develop its Proteoglycan Mimetic Therapeutics to Reduce Vascular Access Failures in ESRD 3China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 2China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 3PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 2PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 3New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 2New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 3New Optical Method Promises Faster, More Accurate Diagnosis of Breast Cancer 4
Cached News: