Mortality Plateaus and the Evolution of Senescence: Why are Old-Age Mortality Rates so Low?

Age-specific mortality rates level off far below 100% at advanced ages in experimental populations of Drosophila melanogaster and other organisms. This observation is inconsistent with the equilibrium predictions of both the antagonistic pleiotropy and mutation accumulation models of senescence, whi...

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Veröffentlicht in:	Evolution 1998-04, Vol.52 (2), p.454-464
Hauptverfasser:	Pletcher, Scott D., Curtsinger, James W.
Format:	Artikel
Sprache:	eng
Schlagworte:	Age Age specific mortality rates Age structure Age‐specific mutations Aging antagonistic pleiotropy Demographics demography Diptera Drosophila Drosophila melanogaster Drosophilidae Evolution Evolutionary genetics Genetic mutation Mortality mortality plateau Mortality rates Mutation mutation accumulation Natural selection Old age Physiological aspects senescence
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