Featured Research

from universities, journals, and other organizations

Two Modes Of Aging Discovered In Fruit Flies

Date:
August 19, 1998
Source:
University Of California, Davis
Summary:
Balancing the need to survive with the need to reproduce, female Mediterranean fruit flies appear to age in two distinct modes, depending on the availability of food, reports a team of researchers led by a UC Davis entomologist.

Balancing the need to survive with the need to reproduce, female Mediterranean fruit flies appear to age in two distinct modes, depending on the availability of food, reports a team of researchers led by a UC Davis entomologist.

When food, particularly protein, is in limited supply, female medflies slip into a survival mode, delaying reproduction even until an advanced age. But as soon as a complete diet is available, they shift into high gear, producing eggs and aging rapidly.

"The findings suggest that reproduction may be one of the key pacemakers of aging," says UC Davis insect demographer James R. Carey. Results from the study of 2,500 medflies will be published in the Aug. 14 issue of the journal Science.

Carey and colleagues compared the fertility and life span of medflies receiving a diet of only sugar to those receiving a complete diet including protein, which is crucial for reproduction and often difficult for medflies to find in the wild.

"One of the most notable findings was that in the sugar-only group, even 4- to 5-month-old medflies--the equivalent of 90-year-old humans--could produce a moderate number of eggs once protein was added to their diet," says Carey, currently at the Max Planck Institute for Demographic Research in Rostock, Germany.

The researchers suggest that further studies of the physiological shifts that occur between the waiting and reproductive modes in medflies may yield a better understanding of the fundamental processes that determine longevity.

UC Davis statistics professors Hans-Georg Mueller and Jane-Ling Wang collaborated with Carey on the project, funded by the National Institute on Aging and the National Science Foundation.


Story Source:

The above story is based on materials provided by University Of California, Davis. Note: Materials may be edited for content and length.


Cite This Page:

University Of California, Davis. "Two Modes Of Aging Discovered In Fruit Flies." ScienceDaily. ScienceDaily, 19 August 1998. <www.sciencedaily.com/releases/1998/08/980819081403.htm>.
University Of California, Davis. (1998, August 19). Two Modes Of Aging Discovered In Fruit Flies. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/1998/08/980819081403.htm
University Of California, Davis. "Two Modes Of Aging Discovered In Fruit Flies." ScienceDaily. www.sciencedaily.com/releases/1998/08/980819081403.htm (accessed October 2, 2014).

Share This



More Health & Medicine News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pregnancy Spacing Could Have Big Impact On Autism Risks

Pregnancy Spacing Could Have Big Impact On Autism Risks

Newsy (Oct. 1, 2014) A new study says children born less than one year and more than five years after a sibling can have an increased risk for autism. Video provided by Newsy
Powered by NewsLook.com
Ebola Patient Told Hospital He Was from Liberia

Ebola Patient Told Hospital He Was from Liberia

AP (Oct. 1, 2014) The first Ebola patient diagnosed in the U.S. initially went to a Dallas emergency room last week but was sent home, despite telling a nurse that he had been in disease-ravaged West Africa, the hospital acknowledged Wednesday. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com
Insertable Cardiac Monitor

Insertable Cardiac Monitor

Ivanhoe (Oct. 1, 2014) A heart monitor the size of a paperclip that can save your life. The “Reveal Linq” allows a doctor to monitor patients with A-Fib on a continuous basis for up to 3 years! Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins