Navigation Links
Not all species age the same; humans may be outliers
Date:12/11/2013

Adult humans get weaker as they age and then die, but that's not the typical pattern across species. Some organisms don't appear to show signs of aging at all.

These are among the findings in a first-of-its-kind study published in the journal Nature this week. The study compares the aging patterns of humans and 45 other species.

"We all have preconceived notions about aging and what it should be like," said Pedro F. Quintana-Ascencio, a biologist at the University of Central Florida and one of the contributors to the study led by evolutionary biologist Owen Jones at the Max-Planck Odense Center at the University of Southern Denmark. "But this study shows we really need to look at the aging process in more depth. All is not what it appears across species. Humans, especially modern humans, appear to be outliers."

The team contrasted how vertebrates, invertebrates, plants, and a green alga age. Modern day people, frogs, lions, lice and the Hypericum cumulicola, a native Florida plant, were among the species compared.

The study found that mortality of some species, like humans and birds, increased with age. For some, such as Florida's hypericum the increase is slower. And for others, like the desert tortoise and certain trees, mortality declines with age.

Other researchers on the project were from the Max Planck Institute for Demographic Research in Rostock, Germany, the University of Queensland in Australia, and the University of Amsterdam in Holland. Several American universities also contributed to the study.

The researchers point out there is no strong correlation between the patterns of aging and the typical life spans of the species. Species can have increasing mortality and still live a long time, or have declining mortality and still live a short time, according to the Max-Planck Odense Center.

"It makes no sense to consider aging to be based on how old a species can become," Jones said. "Instead, it is more interesting to define aging as being based on the shape of mortality trajectories: whether rates increase, decrease or remain constant with age."


'/>"/>

Contact: Zenaida Kotala
zenaida.kotala@ucf.edu
407-823-6120
University of Central Florida
Source:Eurekalert  

Related biology news :

1. Researchers develop system for assessing how effective species are at pollinating crops
2. Life Technologies Collaborates with Canadian Centre for DNA Barcoding on Species Biodiversity Study
3. Harlequin ladybirds escape enemies while native species succumb
4. Arctic study shows key marine food web species at risk from increasing CO2
5. Guard dogs reduce killing of threatened species
6. The collared treerunner is more than a single species
7. 2 new beautiful wasp species of the rare genus Abernessia
8. The closest relatives of papaya are 4 species from Mexico and Guatemala
9. Origin of species: Protein imbalances doom hybrids
10. China National Genebank initiates collaboration to sequence transcriptomes of 1,000 fish species
11. The Gorgons of the eastern Pacific: scientists describe 2 new gorgonian soft coral species
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Not all species age the same; humans may be outliers
(Date:6/20/2016)... DALLAS , June 20, 2016 ... criminal justice technology solutions for public safety, investigation, ... by the prisons involved, it has secured the ... Corrections (DOC) facilities for Managed Access Systems (MAS) ... (4) additional facilities to be installed by October, ...
(Date:6/9/2016)... in attendance control systems is proud to announce the introduction of fingerprint attendance control ... right employees are actually signing in, and to even control the opening of doors. ... ... ... Photo - ...
(Date:6/3/2016)... LONDON , June 3, 2016 /PRNewswire/ ... Transport Management) von Nepal ... ,Angebot und Lieferung hochsicherer geprägter Kennzeichen, einschließlich ... weltweit führend in der Produktion und Implementierung ... an der Ausschreibung im Januar teilgenommen, aber ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... DIEGO , June 24, 2016 ... more sensitively detects cancers susceptible to PARP inhibitors ... circulating tumor cells (CTCs). The new test has ... HRD-targeted therapeutics in multiple cancer types. ... targeting DNA damage response pathways, including PARP, ATM, ...
(Date:6/23/2016)... , June 23, 2016   Boston Biomedical ... novel compounds designed to target cancer stemness pathways, ... been granted Orphan Drug Designation from the U.S. ... of gastric cancer, including gastroesophageal junction (GEJ) cancer. ... designed to inhibit cancer stemness pathways by targeting ...
(Date:6/23/2016)... Prostate Cancer Foundation (PCF) is pleased to announce 24 new Young Investigator ... Members of the Class of 2016 were selected from a pool of 128 ... About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... ... In a new case report published today in STEM CELLS Translational Medicine, doctors ... being treated for breast cancer benefitted from an injection of stem cells derived from ... frequent side effect of cancer treatment. , Lymphedema refers to the swelling ...
Breaking Biology Technology: