Altitudinal patterns for longevity, fecundity and senescence in Drosophila buzzatii
Altitudinal patterns for longevity, fecundity and senescence in Drosophila buzzatii
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果蝇寿命、繁殖力和衰老的海拔模式
作者：
F. M. Norry;P. Sambucetti;A. Scannapieco;Volker Loeschcke
我们测试的变化寿命，衰老率和早期繁殖力的果蝇buzzatii沿着在阿根廷的海拔样带，使用实验室饲养的苍蝇在实验室进行测试，以避免外来死亡。在25 °C时，来自低地人群的女性比来自高地人群的女性寿命更长，衰老率更低。最低而不是最高温度在人口起源的网站最好的预测这一渐变。在较高的测试温度下发现了一个非常不同的模式。在29.5 °C时，雄性的寿命随着种群起源地的海拔而增加。在29.5 °C下，雌性的寿命没有明显的倾斜趋势。有证据表明，在非胁迫温度（25 °C）下，沿着海拔梯度，早期生殖力和寿命之间存在权衡。这种特质关联与衰老的进化理论是一致的。种群与温度和性别与温度的相互作用表明衰老模式以环境特异性的方式表达。
We tested for variation in longevity, senescence rate and early fecundity of Drosophila buzzatii along an elevational transect in Argentina, using laboratory-reared flies in laboratory tests performed to avoid extrinsic mortality. At 25 °C, females from lowland populations lived longer and had a lower demographic rate of senescence than females from highland populations. Minimal instead of maximal temperature at the sites of origin of population best predicted this cline. A very different pattern was found at higher test temperature. At 29.5 °C, longevity of males increased with altitude of origin of population. No clinal trend was apparent for longevity of females at 29.5 °C. There was evidence for a trade-off between early fecundity and longevity at non-stressful temperature (25 °C) along the altitudinal gradient. This trait association is consistent with evolutionary theories of aging. Population-by-temperature and sex-by-temperature interactions indicate that senescence patterns are expressed in environment specific ways.
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DOI：
10.1073/pnas.190338897
发表时间：
2000
影响因子：
11.1
作者：
Schmidt,PS;Duvernell,DD;Eanes,WF
通讯作者：
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影响因子：
3.3
作者：
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影响因子：
3.3
作者：
Coyne,JA;Beecham,E
通讯作者：
Beecham,E
DOI：
10.1073/pnas.94.18.9734
发表时间：
1997-09-02
影响因子：
11.1
作者：
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通讯作者：
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