Publication Date:
1998-08-14
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carey, J R -- Liedo, P -- Muller, H G -- Wang, J L -- Vaupel, J W -- AG-08761/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):996-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Entomology, University of California, Davis, CA 95616, USA. jrcarey@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703516" target="_blank"〉PubMed〈/a〉
Keywords:
Aging/*physiology
;
Animals
;
Dietary Proteins
;
Drosophila
;
Female
;
Longevity
;
Male
;
Models, Biological
;
Reproduction/physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
