Does a population with the highest turnover coefficient win competition?

Rudnicki, Ryszard

doi:10.1080/10236198.2017.1339699

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…The role of DD is examined by combining the dynamics of changing population size with the dynamics of changing frequencies in the mixture of strategies (Argasinski and Broom 2017a , b ). The RD confirm that the winning life history strategies are those that maximize expected lifetime offspring production ( R 0 ) when DD either (i) acts on the recruitment probability of juveniles or, (ii) suppresses birth rate to make the population stationary (Argasinski and Broom 2013 ; Argasinski and Rudnicki 2017 ; Rudnicki 2017 ). When the steady state contains a mixture of R 0 maximizing strategies that have different expected lifespans (different mortalities), then any decrease of the population size or invasion of other suboptimal strategies will induce selection among R 0 maximizers toward strategies with shorter expected lifespan (and shorter generation time) (Argasinski and Broom 2013 ; Argasinski and Rudnicki 2017 ).…”

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confidence: 57%

Extrinsic Mortality Can Shape Life-History Traits, Including Senescence

et al. 2018

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The Williams’ hypothesis is one of the most widely known ideas in life history evolution. It states that higher adult mortality should lead to faster and/or earlier senescence. Theoretically derived gradients, however, do not support this prediction. Increased awareness of this fact has caused a crisis of misinformation among theorists and empirical ecologists. We resolve this crisis by outlining key issues in the measurement of fitness, assumptions of density dependence, and their effect on extrinsic mortality. The classic gradients apply only to a narrow range of ecological contexts where density-dependence is either absent or present but with unrealistic stipulations. Re-deriving the classic gradients, using a more appropriate measure of fitness and incorporating density, shows that broad ecological contexts exist where Williams’ hypothesis is supported.Electronic supplementary materialThe online version of this article (10.1007/s11692-018-9458-7) contains supplementary material, which is available to authorized users.

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