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:2/13/2017)... -- Former 9/11 Commission border counsel and Special Counsel ... of Identity Strategy Partners, LLP, today releases the ... Order: Protecting the Nation From Foreign Terrorist Entry Into ... President Trump,s ,Travel Ban, Executive Order gains more notoriety ... travel ban, it is important that our national discourse ...
(Date:2/8/2017)...  Aware, Inc. (NASDAQ: AWRE ), a leading ... for its quarter and year ended December 31, 2016. ... $3.9 million compared to $6.9 million in the same quarter ... was $0.6 million compared to $2.6 million in the fourth ... 2016 was $0.5 million, or $0.02 per diluted share, which ...
(Date:2/7/2017)... --  MedNet Solutions , an innovative SaaS-based eClinical technology ... is pleased to announce that the latest release of ... and award winning eClinical solution, is now available for ... a proven Software-as-a-Service (SaaS) clinical research technology platform that ... delivers an entire suite of eClinical tools to support ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... ... February 24, 2017 , ... Chef Jodi Abel has ... Making stops in several cities, she gained a number of delicious recipes and ... Stellenbosch, a town in South Africa’s Western Cape province. It is internationally renowned ...
(Date:2/24/2017)... PARSIPPANY, N.J. , Feb. 24, 2017 /PRNewswire/ ... botanicals and biotechnology are now the fastest growing ... the Specialty Actives in Personal Care: Multi-regional ... market research and management consulting firm Kline. ... using bioprocesses that make them more effective for ...
(Date:2/24/2017)... -- VWR Corporation (NASDAQ: VWR), the leading global independent provider of ... reported its financial results for the fourth quarter and full ... 4Q16 record quarterly net sales of $1.13 billion, ... 4Q16 EMEA-APAC segment net sales ... Americas net sales increased 2.5%, or down 0.9% on an ...
(Date:2/23/2017)... ... February 23, 2017 , ... BellBrook ... portfolio to include an array of biochemical analyses critical for Lead Discovery. ... their hit-to-lead and SAR programs, including inhibitor potency and selectivity, mechanism of action, ...
Breaking Biology Technology: