Navigation Links
Teen elephant mothers die younger but have bigger families, University of Sheffield research finds
Date:3/7/2014

Asian elephants that give birth as teenagers die younger than older mothers but raise bigger families during their lifetime, according to new research from the University of Sheffield.

Experts from the University's Department of Animal and Plant Sciences studied the reproductive lives of 416 Asian elephant mothers in Myanmar, Burma, and found those that had calves before the age of 19 were almost two times more likely to die before the age of 50 than those that had their first offspring later.

However, elephants that entered motherhood at an earlier age had more calves following their teenage years than those that started reproducing after the age of 19.

The team's findings will help maximise fertility in captive and semi-captive elephants, reducing the strain on the endangered wild population.

Research found that Asian elephants, which can live into their 70s, could give birth from the age of five.

Yet surprisingly, for a species that live as long as humans do, their fertility peaked on average at the age of 19 before declining.

The team also found elephants that gave birth twice in their teenage years had calves three times more likely to survive to independence than those born to mothers who had their first young after the age of 19.

Therefore, although having calves as a teenager reduced a mother's lifespan, early reproduction was favoured by natural selection because those mothers raised the largest families in their lifetime.

Dr Adam Hayward, of the University of Sheffield's Department of Animal and Plant Sciences, said: "Understanding how maternal performance changes with age and impacts on later-life survival and fertility is important. Asian elephants are endangered in the wild and low fertility in captivity necessitates acquisition of elephants from the wild every year to maintain captive populations.

"Our research was carried out on semi-captive Asian elephants working in timber camps in Myanmar.

"As religious icons in South-east Asia and a key species of the forest ecosystem, their decline is of serious cultural and ecological concern.

"Our results will enable the management of captive and semi-captive elephants to be tailored to maximise fertility, reducing strain on the wild population."

Virpi Lummaa, Reader of Evolutionary Biology at the University of Sheffield, added: "We rarely get the opportunity to study how other species with a lifespan similar to humans grow old.

"This study represents a unique analysis of the ageing process in a similarly long-lived mammal.

"It also supports the evolutionary theory that selection for high fertility in early life is energetically demanding, which accelerates declines in survival rates with age which are typical of most animals."


'/>"/>
Contact: Hannah Postles
h.postles@sheffield.ac.uk
01-142-221-046
University of Sheffield
Source:Eurekalert

Related medicine news :

1. An Elephant That Speaks Korean?
2. Author Liz O’Donnell Helps Busy, Working Mothers Seek Sanity During the Holidays
3. ‘Mommy Makeover’ for Mothers Desiring Their Pre-baby Body Back
4. Death of an adult son increases depressive symptoms in mothers, but not fathers
5. Depression in pregnant mothers may alter the pattern of brain development in their babies
6. US mothers from 1965 to 2010: more TV, less housework
7. Upcoming Praeclarus Press Webinar Teaches How to Create a Comprehensive Safety Net for All Mothers Experiencing, or at Risk of Experiencing, Postpartum Depression
8. Comfort & Harmony™ Makers of the mombo™ Nursing Pillow Offer Tips on Breastfeeding for Working Mothers
9. Diet Doc Hormone Diets & Weight Loss Plans Announce New Hormone Diets to Help New Mothers Lose Weight and Avoid Post Pregnancy Depression
10. Babies named for fathers but not mothers reflect US cultural ideologies
11. Children born to teen mothers have delayed development, likely due to social factors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern ... Laude and his M.D from the David Geffen School of Medicine at UCLA. He ... Los Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program ...
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... On Friday, ... presented a Bronze Wellness at Work award to iHire in recognition of their exemplary ... part of the 7th annual Maryland Workplace Health & Wellness Symposium at the BWI ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... are unfamiliar with. The article goes on to state that individuals are now more ... these less common operations such as calf and cheek reduction. The Los Angeles area ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World ... with chronic pain and the benefits of holistic treatments, Serenity Recovery Center ... with Sickle Cell Disease. , Sickle Cell Disease (SCD) is a disorder of the ...
(Date:6/24/2016)... Dallas, Texas (PRWEB) , ... June 24, 2016 ... ... 12th International Conference and Scientific Sessions in Dallas that it will receive two ... Announcement of the grants came as PHA marked its 25th anniversary by recognizing ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 /PRNewswire/ ... Diabetes Tomorrow,s Leaders Scholarship is any indication, the future ... today online at www.diabetesscholars.org by the Diabetes ... stand in the way of academic and community service ... scholarship program since 2012, and continues to advocate for ...
(Date:6/23/2016)... N.J. , June 23, 2016  Guerbet announced ... Premier Inc.,s Supplier Horizon Award . ... year, Guerbet was recognized for its support of Premier ... creation through clinical excellence, and commitment to lower costs. ... to receive this recognition of our outstanding customer service ...
(Date:6/23/2016)... 2016  Experian Health, the healthcare industry ... patient payment and care experience, today announced ... and services that will enhance the breadth ... These award-winning solutions will enable healthcare professionals ... in an ever-changing environment and redefine front-office ...
Breaking Medicine Technology: