Navigation Links
Not all species age the same; humans may be outliers

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
University of Central Florida

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:
Related Image:
Not all species age the same; humans may be outliers
(Date:10/29/2015)... 29, 2015 Today, LifeBEAM , ... with 2XU, a global leader in technical performance ... hat with advanced bio-sensing technology. The hat will ... monitor key biometrics to improve overall training performance. ... two companies will bring together the most advanced technology, ...
(Date:10/26/2015)... India , October 26, 2015 ... --> adds ... 2015 to 2021 as well as ... 2015-2019 research reports to its collection ... . --> ...
(Date:10/23/2015)... , October 23, 2015 ... announce a mobile plug and play integration of physiological ... tasks SensoMotoric Instruments (SMI) present a ... solutions for eye tracking and physiological data registration. It ... SMI Eye Tracking Glasses 2w and physiological signals ...
Breaking Biology News(10 mins):
(Date:11/27/2015)... Nov. 27, 2015 /PRNewswire/--  Mallinckrodt plc (NYSE: ... that it has closed the sale of its global ... (GBT- NYSE Euronext) in a transaction valued at approximately ... facilities and a total of approximately 1,000 employees spread ... St. Louis area. This entire workforce ...
(Date:11/26/2015)... CHESHAM , England , November 26, ... Lightpoint Medical, an innovative medical device company specializing in ... Euro grant from the European Commission as part of the ... enabling the company to carry out a large-scale clinical trial ... -->      (Logo: , ...
(Date:11/25/2015)... 2015 Studies reveal the differences ... and pave the way for more effective treatment for one ...   --> --> ... problems in cats, yet relatively little was understood about the ... have been conducted by researchers from the WALTHAM Centre for ...
(Date:11/25/2015)... ... November 25, 2015 , ... A long-standing partnership between the ... has been formalized with the signing of a Memorandum of Understanding. , AMA ... Capt. Karl Minter and Capt. Albert Glenn Tuesday, November 24, 2015, at AMA ...
Breaking Biology Technology: