Dual modes of aging in Mediterranean fruit fly females
Dual modes of aging in Mediterranean fruit fly females
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DOI：
10.1126/science.281.5379.996
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发表时间：
1998-08-14
期刊：
影响因子：
56.9
通讯作者：
Vaupel, JW
中科院分区：
文献类型：
--
作者：
Carey, JR;Liedo, P;Vaupel, JW
地中海果蝇的生活史具有两种生理模式，具有不同的生育和生存的人口统计表：一种是死亡率和繁殖率都很低的等待模式，另一种是在产卵开始时死亡率非常低但随着产卵而加速的繁殖模式。当地中海果蝇只喂食糖时，它们会处于等待模式。当喂食野生稀缺资源蛋白质时，地中海果蝇会切换到繁殖模式。从等待模式切换到繁殖模式的地中海果蝇比仅处于任一模式的地中海果蝇的存活时间更长。了解等待模式和生殖模式之间发生的生理转变可能会产生有关决定寿命的基本过程的信息。
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.