Navigation Links
Sexual reproduction delays aging in a mammalian species

Past research on aging and the life histories of diverse species has shown that sexual reproduction is biologically costly for individuals and tends to decrease lifespan rather than increase it. But a new study by Philip Dammann and Hynek Burda from the University of Duisburg-Essen shows that, in a vertebrate species, the opposite can be true as well.

The authors, studying captive Zambian mole-rats (Cryptomys anselli), analyzed breeding data gathered over the course of more than 20 years. These subterranean, almost-blind, hamster-sized rodents are among the very few mammal species that have adopted a eusocial lifestyle. This means that they live in family groups containing one breeding pair--offspring remain with their parents as (mostly whole-life) helpers--burrowing, foraging, and raising young together. Whereas the breeding pair is sexually active throughout the year, the helpers are sexually quiescent. By comparing the long-term survival of breeders and non-breeders, Dammann and Burda found that the former lived extraordinarily long (up to 20 years) and on average about twice as long as their non-breeding counterparts. The researchers were also able to show that this pattern was not caused by differences in intrinsic biological quality, social rank, or workload between breeders and non-breeders.

These findings provide unexpected new information for understanding the evolution of life histories, and they shed new light on the old question of the connection between sexual activity and aging. Furthermore, as the authors argue, Cryptomys anselli could become a valuable new model organism for the study of the mechanisms that underlie aging, since this species offers the rare opportunity to study differential aging rates among individuals possessing the same genes and experiencing the same environmental conditions, apparently differing only in the aspect of pair-bonding and engaging in sexual activity.


'"/>

Source:Cell Press


Page: 1

Related biology news :

1. Sexual cooperation: Mating increases longevity in ant queens
2. New study: Sexually transmitted disease treatment can be effectively administered by sex partners
3. Getting an evolutionary handle on life after reproduction
4. Olfactory system detects pheromones that control reproduction
5. The brain is broadly wired for reproduction
6. New brain hormone puts brakes on reproduction
7. Researchers discover that sheep need retroviruses for reproduction
8. Tissue engineered scaffolding allows reproduction of cartilage tissue
9. Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate
10. Imaging Lymph Nodes with Nanoparticles
11. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/21/2016)... , March 22, 2016 ... recognition with passcodes for superior security   ... a leading provider of secure digital communications services, today ... biometric technology and offer enterprise customers, particularly those in ... facial recognition and voice authentication within a mobile app, ...
(Date:3/15/2016)... ALBANY, New York , March 15, 2016 ... a new market report published by Transparency Market Research "Digital ... Growth, Trends and Forecast 2015 - 2023," the global digital ... at US$ 731.9 Mn in 2014 and is forecast to ... to 2023. Growth of micro, small and medium enterprises (MSMEs) ...
(Date:3/14/2016)... HANOVER , Allemagne, March 14, 2016 /PRNewswire/ ... http://www.apimages.com ) - --> - ... ) - --> ... les solutions biométriques, fournit de nouveaux lecteurs d,empreintes ... lecteur LF10 de DERMALOG sera utilisé pour produire ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... Thailand’s Board of ... 2016 in San Francisco. Located at booth number 7301, representatives from the Thai ... and discuss the Thai biotechnology and life sciences sector. , Deputy Secretary ...
(Date:5/25/2016)... ... May 25, 2016 , ... WEDI, the nation’s leading authority on ... that Charles W. Stellar has been named by the WEDI Board of Directors as ... As an executive leader with more than 35 years of experience in healthcare, association ...
(Date:5/24/2016)... , ... May 24, 2016 , ... Last week, Callan ... corporate executives and entrepreneurs, held The Future of San Diego Life Science event at ... Diego life science community attended the event with speakers Dr. Rich Heyman, former CEO ...
(Date:5/23/2016)... -- Oxitec CEO Hadyn Parry will ... ET before the United States House Committee on Science, Space ... in controlling the spread of the Aedes aegypti ...      (Logo: http://photos.prnewswire.com/prnh/20150630/227348 ) Oxitec has ... Trials in Brazil , Panama ...
Breaking Biology Technology: