Abstract Lay Summary: An evolutionary mechanism of aging was hypothesized 60 years
ago to be the genetic trade-off between early life fitness and late life mortality. Genetic …

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Finally, an eBook version of this now classic textbook has become available. Largely based
on the 6th edition, published in 2000, this version is competitively priced. Written by well …

Though it has been widely predicted that in animals in which reproductive value declines
with age, reproductive effort should increase toward the end of the lifespan, analysis of …

This unique book looks at the biology of aging from a fundamentally new perspective, one
based on evolutionary theory rather than traditional concepts which emphasize molecular …

To be the best in all possible worlds is not biologically possible; to be well adapted to even
one world requires compromise. Theoretical studies of life history evolution embody such …

This paper identifies the effects of different types of reproductive cost on the pattern of life
histories. By reproductive cost I mean the generally deleterious effect of present …

Empirical studies have shown that in teleosts there is a significant correlation between the
life history parameters, age at first reproduction, natural mortality, and growth rate. In this …

Optimization theory is designed to find the best ways of doing things. The structures of
animals, their movements, their behavior, and their life histories have all been shaped by the …

Size-dependent variation in reproductive effort (RE) appears to be a common phenomenon
in many plant species, but researchers have not fully appreciated the factors causing such …