A qualitative analysis of some life-history correlates of longevity in Drosophila melanogaster

被引:58
作者
Luckinbill, L. S. [1 ]
Graves, J. L.
Tomkiw, A.
Sowirka, O.
机构
[1] Wayne State Univ, Dept Biol Sci, Detroit, MI 48202 USA
基金
美国国家科学基金会;
关键词
Drosophila; longevity; mate tolerance; body size; flight; life history;
D O I
10.1007/BF02071591
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Three likely traits were examined for their possible connection with increased life span in strains of Drosophila melanogaster selected for longevity. First, pairing with males caused a substantial reduction in survival of females from the short-lived control strain but, long-lived females were relatively unaffected. A significant component of the improvement in selected females is, therefore, increased tolerance to the presence of mates. Females only slightly affected male survival in either long- or short-lived populations. Selected strains survive substantially better than controls independently of any effect of mate presence. The (dry) weight of whole flies is equivalent in long- and short-lived populations. Variation in body size does not appear to contribute significantly to extended longevity here. A third character, the duration of tethered flight, was found to be from three to five times greater in long-lived populations than controls. This suggests the existence of a common physiological basis of longevity to which multiple components contribute in adaptive improvement.
引用
收藏
页码:85 / 94
页数:10
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