HOME >> BIOLOGY >> NEWS
Age is more than a number -- in barn owls, it reveals how susceptible one is to climate change

Fluctuations in weather and the environment affect survival and reproduction of animals. But are all individuals within a population equally susceptible? Theory on the evolution in age-structured populations suggests not those life stages that are more important for overall fitness should be less susceptible to environmental variation than other life stages. Empirical support for this prediction is rare because detailed data need to be collected over many years, and true variation tends to be inflated through the way in which natural populations are sampled.

In the January issue of The American Naturalist, Res Altwegg (University of Cape Town and University of Victoria), Michael Schaub (Swiss Ornithological Institute and University of Bern), and Alexandre Roulin (University of Lausanne), examined temporal variation in survival and reproduction of barn owls in western Switzerland that had been observed over the past fifteen years. Using recently developed statistical tools, they were able to show that those fitness components that experienced stronger selection were indeed less variable over the years.

"Our results help explain why certain age classes are more susceptible to adverse weather, and they will help us understand how climatic variation affects populations of organisms in nature. This is important for predicting the effect of climate change on populations," the authors said.


'"/>

Contact: Suzanne Wu
swu@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
10-Jan-2007


Page: 1

Related biology news :

1. Climate change reduces Queenslands bat numbers
2. Landmark study identifies large number of new proteins implicated in Huntingtons disease
3. Ugandas mountain gorillas increase in number
4. Alpine bird numbers on the slide due to high-altitude ski runs
5. Disappearing nest egg: Researcher studying declining numbers of macaws
6. FUZEON with investigational HIV drug results in remarkable number of patients achieving undetectable
7. Human behavior changes the number of strains of infectious diseases
8. Preventing ventilation induced lung injury depends on giving the right number of sighs
9. Record number of abstracts submitted for largest scientific congress devoted to osteoporosis
10. Single cell amoeba increases MRSA numbers 1000- fold
11. 3,317 and counting (the number of marine species in the Gulf of Maine)

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/1/2020)... , ... July 01, 2020 , ... ... awareness and solutions for glioblastoma—the most common and aggressive adult brain cancer—announced today ... JD, PhD. Senior Fellows are charged with supporting the organization’s initiatives and overall ...
(Date:6/23/2020)... (PRWEB) , ... June 23, ... ... provider of gene-to-protein and monoclonal antibody development services, today announced that the ... products and services to the pharmaceutical, diagnostics, and research industries. The decision ...
(Date:6/23/2020)... ... June 23, 2020 , ... In its June 22 online ... with Dr. James L. Sherley, M.D., Ph.D., founder and director of stem cell biotechnology ... announced on June 16 that starting July 5 it would begin offering ...
Breaking Biology News(10 mins):
(Date:8/15/2020)... (PRWEB) , ... August 13, 2020 , ... True ... the creation of its Scientific Advisory Board (SAB) to research the medical potential of ... can be enhanced when combined with terpenes. The board is focused on expanding the ...
(Date:8/12/2020)... BINGHAM FARMS, Mich. (PRWEB) , ... August 12, ... ... International Consulting Group, Inc. (EMMA International), a global leader in FDA compliance ... ranking of the nation’s fastest-growing private companies. The list represents a unique look ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is ... $3950. With 50 million stem cells total, patients may choose which extremities they would ... for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is ...
(Date:7/31/2020)... ... July 29, 2020 , ... ... the leading global provider of advanced delivery technologies, development, and manufacturing solutions for ... they have entered into a strategic partnership whereby Catalent will provide support for ...
Breaking Biology Technology:
Cached News: