Dual modes of aging in Mediterranean fruit fly females

被引:129
作者
Carey, JR
Liedo, P
Müller, HG
Wang, JL
Vaupel, JW
机构
[1] Univ Calif Davis, Dept Entomol, Livermore, CA 95616 USA
[2] Univ Calif Berkeley, Ctr Econ & Demog Aging, Berkeley, CA 94720 USA
[3] Colegio Frontera Sur, Tapachula 30700, Chiapas, Mexico
[4] Univ Calif Davis, Div Stat, Livermore, CA 95616 USA
[5] Max Planck Inst Demog Res, D-18057 Rostock, Germany
[6] Odense Univ, Sch Med, DK-5000 Odense C, Denmark
[7] Duke Univ, Sanford Inst, Durham, NC 27706 USA
[8] Univ So Calif, Ethel Percy Andrus Gerontol Ctr, Los Angeles, CA 90089 USA
关键词
D O I
10.1126/science.281.5379.996
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:996 / 998
页数:3
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