Navigation Links
Predators predict longevity of birds
Date:4/30/2014

This news release is available in German.

Ageing inevitably occurs both in humans and in other animals. However, life-span varies widely across species. Researchers of the Max Planck Institute for Ornithology in Seewiesen have now found a possible general mechanism explaining differences in longevity. They investigated life history data of nearly 1400 bird species and found that avian life span varies considerably across the entire Earth, and that much of this variation can be explained by the species' body mass and clutch size and by the local diversity of predator species. With their data the researchers were able to confirm a key prediction of the classical evolutionary theory of ageing that had been proposed more than 50 years ago.

It is well-known that organisms vary widely in life-span. Whereas some fish, turtles or even invertebrates can become hundreds of years old, the neon pygmy goby a small fish - reaches ripe old age at only 60 days. In birds, variation in life-span extends from parrots such as the Sulphur-crested cockatoo that can become more than 100 years old, to the small Allen's hummingbird with a maximum life-span of only 4 years, a 25 fold difference. How can this variation be explained?

The classical evolutionary theory of ageing, first proposed by the famous evolutionary biologist George C. Williams over 50 years ago, gives an answer. The theory predicts that high mortality rates in adult animals due to predation, exposure to parasites and other randomly occurring events will be associated with shorter maximum life-spans. This is because under high external mortality most individuals will already be dead (eaten or succumbed to disease) before natural selection can act on rare mutations that cause healthier ageing.

The theory has since be
'/>"/>

Contact: Dr. Bart Kempenaers
b.kempenaers@orn.mpg.de
49-815-793-2232
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Fish from acidic ocean waters less able to smell predators
2. Longer catch-and-release time leaves largemouth bass nests more vulnerable to predators
3. Amphibians and dinosaurs were the new large predators after the mass extinction
4. Predators delay pest resistance to Bt crops
5. Steak-knife teeth reveal ecology of oldest land predators
6. Acidification, predators pose double threat to oysters
7. Study maps human impacts on top ocean predators along US west coast
8. Predators vs. alien: European shrimps win predatory battles with an American invader
9. Caribbeans native predators unable to stop aggressive lionfish population growth
10. New study shows predators affect the carbon cycle
11. Dietary flexibility may have helped some large predators survive after last ice age
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Predators predict longevity of birds
(Date:12/24/2014)... its launch in December 2014, the 1U™ app ... trying to remember their usernames and passwords through replacing the ... To assist people who have struggled to remember usernames and ... and focuses on redefining identity, announced today that it is ...
(Date:12/19/2014)... Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has announced ... Perimeter Security Systems Market" report to their offering. ... American perimeter security market is estimated to grow at a ... market holds a larger share in this market, ...
(Date:12/17/2014)...  HITLAB SM announced today its completion of a ... to current U.S. Food and Drug Administration (FDA) regulations. ... and smart phone application trials utilizing the highest principles ... is determined to improve global healthcare access, quality, and ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... have discovered that the skin is capable of communicating ... and they say that it may help our understanding ... the body. Professor Susanne Mandrup and her research ... the Department of Biochemistry and Molecular Biology at the ...
... common tourist activity, but a new study published online ... that already-imperilled iguanas are suffering further physiological problems as ... Knapp, PhD, of the John G. Shedd Aquarium in ... and endoparasitic infection rates between northern Bahamian rock iguanas ...
... For discoveries about how the brain calculates and remembers where ... University will award the 2013 Louisa Gross Horwitz Prize to ... Norwegian University of Science and Technology in Norway, and John ... Their work, conducted in animal models, may lead to new ...
Cached Biology News:Surprising discovery: The skin communicates with the liver 2Feeding by tourists compromises health of already-endangered iguanas, study finds 2Feeding by tourists compromises health of already-endangered iguanas, study finds 3Columbia's 2013 Horwitz Prize awarded for discoveries that could lead to new Alzheimer's treatments 2Columbia's 2013 Horwitz Prize awarded for discoveries that could lead to new Alzheimer's treatments 3Columbia's 2013 Horwitz Prize awarded for discoveries that could lead to new Alzheimer's treatments 4Columbia's 2013 Horwitz Prize awarded for discoveries that could lead to new Alzheimer's treatments 5
(Date:1/22/2015)... California (PRWEB) January 22, 2015 Eckert ... Accelerator Mass Spectrometry (AMS) services to the pharmaceutical and ... has joined the company in the position of Director ... years of broad and valuable experience in drug metabolism ...
(Date:1/22/2015)... GEA Niro Soavi the leader in high ... PandaPLUS 2000, which is ideal for new applications for ... disruption . This compact laboratory homogenizer is the perfect ... food additives and ingredients as well as for the ...
(Date:1/22/2015)... January 22, 2015 The laboratory information ... has witnessed a number of technological advancements due to ... requirements, growing need to integrate healthcare systems, and increasing ... challenges in system integration. Key players in the market ...
(Date:1/22/2015)... 22, 2015 Pipette.com has added the ... their comprehensive portfolio of Eppendorf products. , The Eppendorf ... a Centrifuge 5424/5424 R and receive the following:, ... Research plus or Eppendorf Reference 2 , ...
Breaking Biology Technology:Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 2Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 3GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 4Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2
... feasible and advantageous for the U.S. Army,s Chemical Materials ... secondary waste during regular chemical agent disposal operations, says ... The committee that wrote the report also determined that ... allowing the submission of data from previous trial burns ...
... Scientists at Pacific Northwest National Laboratory,have discovered a ... that,will enable creation of a portable biosensor that ... chemical or nerve agents, the need to quickly ... worried well. , The sensor components resemble a ...
... Within three years, insulin-producing islet cells from pigs may ... finally cure insulin dependant diabetes. , This key ... Director of the Diabetes Institute for Immunology & Transplantation ... documented their medical breakthrough in the prestigious scientific journal ...
Cached Biology Technology:Report recommends off-site disposal of secondary waste 2Report recommends off-site disposal of secondary waste 3Report recommends off-site disposal of secondary waste 4Truly sick or simply scared? 2Breakthrough research identifies how cells from pigs may cure diabetes 2
Antibody specific for histone H3 acetylated at any of the five N-terminal lysine residues. Rabbit polyclonal serum. Antigen: Synthetic peptide derived from histone H3 N-terminal region, mulitpliy...
Request Info...
Immunofixation Gel Kit, requires IF100 Reactivity: Human Applications: Immunofixation ...
Request Info...
Biology Products: