HOME >> BIOLOGY >> NEWS
Malnutrition Impacts Longevity Of Females More Than Males And Shows Gender Differences In Fruit Flies

Diet can change the rate of aging in fruit flies, even reversing the normal longevity advantage of females over males, according to a population study by researchers at the University of California, Davis.

The results support earlier findings by the same scientists indicating that life span is not necessarily fixed for all animals, as had been presumed for years by many gerontologists.

Fast-breeding Medflies are used as models to study basic population questions. The newly published study provides a statistical analysis of the life span of more than 400,000 Mediterranean fruit flies. It was conducted by UC Davis statistics professor Hans-George Müller and entomology professor James Carey and will appear in the March 18 issue of the Proceedings of the National Academy of Sciences.

"This is the first known study to demonstrate that the age trajectory, or path of mortality, during a specific period of life can be changed by manipulating environmental conditions, in this case through diet," said Carey, an authority on insect demography, who for several years has used the Medfly to study life-span theories. "It was previously thought that the mortality curves for most species were more-or-less genetically predetermined."

Medflies usually live for about two to three weeks. Those that make it to 60 days have lived the equivalent of 85 human years. If they receive a normal diet of sugar plus protein, females generally outlive males by about 1.5 days. But in this new study, the researchers report that, when fed a protein-deprived diet, males lived shorter lives overall, but outlived females by a little more than two days.

Carey and colleagues conducted this nutrition-manipulation study to determine why death rates level off sooner and at a lower level for female Medflies than for their male counterparts. This earlier flattening of the female mortality curve was observed in protein-deprived medflies studied in the 1992 "Oldest-Ol
'"/>

Contact: Patricia Bailey
pjbailey@ucdavis.edu
916-752-9843
University of California - Davis
18-Mar-1997


Page: 1 2 3

Related biology news :

1. Malnutrition In AIDS Patients
2. The Many Faces Of Malnutrition In Crohn Disease
3. Impacts of Pfiesteria: Outbreaks could substantially reduce tourism revenues, UD Sea Grant researcher says
4. Longevity genes
5. New Insights Into The Enigma Of Lengthening Longevity
6. Females may be more susceptible to overindulge sweet tooth cravings than males
7. Male Moths Sperm Protects Females
8. This Wasp Isnt Your Run Of The Mill Social Insect, Its The First Where Males, Not Females, Are Dominant
9. Females Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
10. Environmental Factors Contribute To High Blood Pressure In African-American Males
11. New Study Shows White Males Have More Receptors For Patent Blood-Vessel Contracting Substance

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/10/2020)... Va. (PRWEB) , ... July 08, 2020 , ... ... Latest on Cell and Gene Therapy Regulation, An FDAnews Webinar, Wednesday, July 22, ... need a comparability study, but what is the most effective way to complete ...
(Date:7/2/2020)... ... July 02, 2020 , ... Dutch ... the use of its revolutionary NEXTGENPCR endpoint thermocycler to test for SARS-CoV-2 ... The article, titled "Ultra-fast one-step RT-PCR protocol for the detection of SARS-CoV-2," ...
(Date:6/28/2020)... JUPITER, Fla. (PRWEB) , ... June 25, 2020 , ... ... will focus on innovations in accelerated Point of Care Testing solutions (POCT). Check local ... labs. Samples are collected at medical offices and are shipped to labs throughout the ...
Breaking Biology News(10 mins):
(Date:7/18/2020)... ... July 16, 2020 , ... After research model surgery and catheter implantation, ... surgery is only the beginning of a successful study, while protecting and accessing the ... Gien, Global Head of Surgery from Envigo in a live webinar ...
(Date:7/10/2020)... BALTIMORE (PRWEB) , ... July ... ... Baltimore biotechnology company, announced today that Massachusetts Institute of Technology (MIT) has ... This broader license allows PathSensors to move into the point-of-care diagnostic market, ...
(Date:7/1/2020)... ... June 29, 2020 , ... MedShift ... 40% in 2020, despite many obstacles created as a result of COVID-19. As ... for its partnered medical practices and medical manufacturers by expanding access to device ...
(Date:6/28/2020)... ... June 25, 2020 , ... Lumeda Inc. ... cancer, today announced the company has entered a license agreement with Roswell Park ... Lumeda globally exclusive rights to Roswell Park intellectual property surrounding a novel medical ...
Breaking Biology Technology:
Cached News: