Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 14 August 1998:
Vol. 281. no. 5379, pp. 996 - 998
DOI: 10.1126/science.281.5379.996
Prev | Table of Contents | Next

Reports

Dual Modes of Aging in Mediterranean Fruit Fly Females

James R. Carey, * Pablo Liedo, Hans-Georg Müller, Jane-Ling Wang, James W. Vaupel

The life history of medflies is characterized by two physiological modes with different demographic schedules of fertility and survival: a waiting mode in which both mortality and reproduction are low and a reproductive mode in which mortality is very low at the onset of egg laying but accelerates as eggs are laid. Medflies stay in waiting mode when they are fed only sugar. When fed protein, a scarce resource in the wild, medflies switch to reproductive mode. Medflies that switch from waiting to reproductive mode survive longer than medflies kept in either mode exclusively. An understanding of the physiological shift that occurs between the waiting and reproductive modes may yield information about the fundamental processes that determine longevity.

J. R. Carey, Department of Entomology, University of California, Davis, CA 95616, USA, and Center for the Economics and Demography of Aging, University of California, Berkeley, CA 94720, USA. P. Liedo, El Colegio de la Frontera Sur, Carreterra Antiguo Aeropuerto Km 2.5, 30700, Tapachula, Chiapas, Mexico. H.-G. Müller and J.-L. Wang, Division of Statistics, University of California, Davis, CA 95616, USA. J. W. Vaupel, Max Planck Institute for Demographic Research, Doberaner Strasse 114, D-18057 Rostock, Germany; Odense University Medical School, DK-5000 Odense C, Denmark; Sanford Institute, Duke University, Durham, NC 27706, USA; and Andrus Gerontology Center, University of Southern California, Los Angeles, CA 90089-0191, USA.
*   To whom correspondence should be addressed at Department of Entomology, One Shields Avenue, University of California, Davis, CA 95616, USA. E-mail: jrcarey{at}ucdavis.edu

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Nutritional Geometry Provides Food for Thought.
C. Ruth Archer, N. Royle, S. South, C. Selman, and J. Hunt (2009)
J Gerontol A Biol Sci Med Sci 64A, 956-959
   Abstract »    Full Text »    PDF »
A Polymorphism of the YTHDF2 Gene (1p35) Located in an Alu-Rich Genomic Domain Is Associated With Human Longevity..
M. Cardelli, F. Marchegiani, L. Cavallone, F. Olivieri, S. Giovagnetti, E. Mugianesi, R. Moresi, R. Lisa, and C. Franceschi (2006)
J. Gerontol. A Biol. Sci. Med. Sci. 61, 547-556
   Abstract »    Full Text »    PDF »
Hormone-Treated Snell Dwarf Mice Regain Fertility But Remain Long Lived and Disease Resistant.
M. Vergara, M. Smith-Wheelock, J. M. Harper, R. Sigler, and R. A. Miller (2004)
J. Gerontol. A Biol. Sci. Med. Sci. 59, 1244-1250
   Abstract »    Full Text »    PDF »
Demography of Dietary Restriction and Death in Drosophila.
W. Mair, P. Goymer, S. D. Pletcher, and L. Partridge (2003)
Science 301, 1731-1733
   Abstract »    Full Text »    PDF »
What Fecundity Patterns Indicate About Aging and Longevity: Insights From Drosophila Studies.
V. N. Novoseltsev, J. A. Novoseltseva, S. I. Boyko, and A. I. Yashin (2003)
J. Gerontol. A Biol. Sci. Med. Sci. 58, B484-494
   Abstract »    Full Text »    PDF »
The Endocrine Regulation of Aging by Insulin-like Signals.
M. Tatar, A. Bartke, and A. Antebi (2003)
Science 299, 1346-1351
   Abstract »    Full Text »    PDF »
Dietary Drawbacks.
K. Hopkin (2003)
Sci. Aging Knowl. Environ. 2003, ns4-4
   Abstract »    Full Text »    PDF »
Biological Implications of the Weibull and Gompertz Models of Aging.
R. E. Ricklefs and A. Scheuerlein (2002)
J. Gerontol. A Biol. Sci. Med. Sci. 57, B69-76
   Abstract »    Full Text »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)